株探米国株
英語
エドガーで原本を確認する
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-Q
(mark one)    
  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2023
OR
  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from          to          

Commission File Number: 1-10499
logoa14.jpg
NORTHWESTERN CORP
(Exact name of registrant as specified in its charter)
Delaware   46-0172280
(State or other jurisdiction of
incorporation or organization)
  (I.R.S. Employer
Identification No.)
3010 W. 69th Street Sioux Falls South Dakota   57108
(Address of principal executive offices)   (Zip Code)
Registrant’s telephone number, including area code: 605-978-2900

N/A
(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:
Title of each class Trading Symbol(s) Name of each exchange on which registered
Common stock NWE Nasdaq Stock Market LLC
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non- accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large Accelerated Filer Accelerated Filer Non-accelerated Filer Smaller Reporting Company Emerging Growth Company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes☐ No ☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date:

Common Stock, Par Value $0.01, 60,041,809 shares outstanding at July 21, 2023
1


NORTHWESTERN CORPORATION
 
FORM 10-Q
 
INDEX
  Page
 
 
 
 
2


SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

On one or more occasions, we may make statements in this Quarterly Report on Form 10-Q regarding our assumptions, projections, expectations, targets, intentions or beliefs about future events. All statements other than statements of historical facts, included or incorporated by reference in this Quarterly Report, relating to our current expectations of future financial performance, continued growth, changes in economic conditions or capital markets and changes in customer usage patterns and preferences are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934.

Words or phrases such as “anticipates," “may," “will," “should," “believes," “estimates," “expects," “intends," “plans," “predicts," “projects," “targets," “will likely result," “will continue" or similar expressions identify forward-looking statements. Forward-looking statements involve risks and uncertainties, which could cause actual results or outcomes to differ materially from those expressed. We caution that while we make such statements in good faith and believe such statements are based on reasonable assumptions, including without limitation, our examination of historical operating trends, data contained in records and other data available from third parties, we cannot assure you that we will achieve our projections. Factors that may cause such differences include, but are not limited to:

•adverse determinations by regulators, as well as potential adverse federal, state, or local legislation or regulation, including costs of compliance with existing and future environmental requirements, could have a material effect on our liquidity, results of operations and financial condition;
•the impact of extraordinary external events and natural disasters, such as a wide-spread or global pandemic, geopolitical events, earthquake, flood, drought, lightning, weather, wind, and fire, could have a material effect on our liquidity, results of operations and financial condition;
•acts of terrorism, cybersecurity attacks, data security breaches, or other malicious acts that cause damage to our generation, transmission, or distribution facilities, information technology systems, or result in the release of confidential customer, employee, or Company information;
•supply chain constraints, recent high levels of inflation for product, services and labor costs, and their impact on capital expenditures, operating activities, and/or our ability to safely and reliably serve our customers;
•changes in availability of trade credit, creditworthiness of counterparties, usage, commodity prices, fuel supply costs or availability due to higher demand, shortages, weather conditions, transportation problems or other developments, may reduce revenues or may increase operating costs, each of which could adversely affect our liquidity and results of operations;
•unscheduled generation outages or forced reductions in output, maintenance or repairs, which may reduce revenues and increase operating costs or may require additional capital expenditures or other increased operating costs; and
•adverse changes in general economic and competitive conditions in the U.S. financial markets and in our service territories.

We have attempted to identify, in context, certain of the factors that we believe may cause actual future experience and results to differ materially from our current expectation regarding the relevant matter or subject area. In addition to the items specifically discussed above, our business and results of operations are subject to the uncertainties described under the caption “Risk Factors” which is part of the disclosure included in Part II, Item 1A of this Quarterly Report on Form 10-Q.

From time to time, oral or written forward-looking statements are also included in our reports on Forms 10-K, 10-Q and 8-K, Proxy Statements on Schedule 14A, press releases, analyst and investor conference calls, and other communications released to the public. We believe that at the time made, the expectations reflected in all of these forward-looking statements are and will be reasonable. However, any or all of the forward-looking statements in this Quarterly Report on Form 10-Q, our reports on Forms 10-K and 8-K, our other reports on Form 10-Q, our Proxy Statements on Schedule 14A and any other public statements that are made by us may prove to be incorrect. This may occur as a result of assumptions, which turn out to be inaccurate, or as a consequence of known or unknown risks and uncertainties. Many factors discussed in this Quarterly Report on Form 10-Q, certain of which are beyond our control, will be important in determining our future performance. Consequently, actual results may differ materially from those that might be anticipated from forward-looking statements. In light of these and other uncertainties, you should not regard the inclusion of any of our forward-looking statements in this Quarterly Report on Form 10-Q or other public communications as a representation by us that our plans and objectives will be achieved, and you should not place undue reliance on such forward-looking statements.

3


We undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. However, your attention is directed to any further disclosures made on related subjects in our subsequent reports filed with the Securities and Exchange Commission (SEC) on Forms 10-K, 10-Q and 8-K and Proxy Statements on Schedule 14A.

Unless the context requires otherwise, references to “we,” “us,” “our,” “NorthWestern Corporation,” “NorthWestern Energy,” and “NorthWestern” refer specifically to NorthWestern Corporation and its subsidiaries.

4


PART 1. FINANCIAL INFORMATION
 
ITEM 1.FINANCIAL STATEMENTS
 

NORTHWESTERN CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME
 
(Unaudited)
 
(in thousands, except per share amounts)
 
  Three Months Ended June 30, Six Months Ended June 30,
  2023 2022 2023 2022
Revenues  
Electric $ 229,266  $ 243,418  $ 524,574  $ 515,145 
Gas 61,236  79,586  220,470  202,341 
Total Revenues 290,502  323,004  745,044  717,486 
Operating expenses  
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below) 67,578  95,001  233,070  230,074 
Operating and maintenance 54,840  53,337  110,701  106,131 
Administrative and general 29,955  27,220  64,703  58,864 
Property and other taxes 40,129  46,893  89,280  93,743 
Depreciation and depletion 52,380  48,212  105,628  97,117 
Total Operating Expenses 244,882  270,663  603,382  585,929 
Operating income 45,620  52,341  141,662  131,557 
Interest expense, net (28,411) (24,033) (56,419) (47,749)
Other income, net 4,062  2,913  8,799  7,634 
Income before income taxes 21,271  31,221  94,042  91,442 
Income tax expense (2,147) (1,435) (12,388) (2,546)
Net Income $ 19,124  $ 29,786  $ 81,654  $ 88,896 
Average Common Shares Outstanding 59,804  54,272  59,790  54,185 
Basic Earnings per Average Common Share $ 0.32  $ 0.55  $ 1.37  $ 1.64 
Diluted Earnings per Average Common Share $ 0.32  $ 0.54  $ 1.37  $ 1.62 
Dividends Declared per Common Share $ 0.64  $ 0.63  $ 1.28  $ 1.26 

See Notes to Condensed Consolidated Financial Statements
 
5


NORTHWESTERN CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
 
(Unaudited)
 
(in thousands)
 
Three Months Ended June 30, Six Months Ended June 30,
  2023 2022 2023 2022
Net Income $ 19,124  $ 29,786  $ 81,654  $ 88,896 
Other comprehensive income, net of tax:
Foreign currency translation adjustment (1) (3) (1)
Postretirement medical liability adjustment (167) (158) (334) (316)
Reclassification of net losses on derivative instruments 113  113  226  226 
Total Other Comprehensive Loss (55) (44) (111) (91)
Comprehensive Income $ 19,069  $ 29,742  $ 81,543  $ 88,805 

See Notes to Condensed Consolidated Financial Statements
 
6


NORTHWESTERN CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS
 
(Unaudited)

(in thousands, except share data)
  June 30, 2023 December 31, 2022
ASSETS    
Current Assets:    
Cash and cash equivalents $ 7,757  $ 8,489 
Restricted cash 16,263  13,974 
Accounts receivable, net 147,173  244,952 
Inventories 107,577  107,359 
Regulatory assets 52,869  136,009 
Prepaid expenses and other 25,567  28,041 
      Total current assets  357,206  538,824 
Property, plant, and equipment, net 5,802,526  5,657,480 
Goodwill 357,586  357,586 
Regulatory assets 726,129  716,570 
Other noncurrent assets 50,795  47,323 
      Total Assets  $ 7,294,242  $ 7,317,783 
LIABILITIES AND SHAREHOLDERS' EQUITY    
Current Liabilities:    
Current maturities of finance leases $ 3,213  $ 3,098 
Current portion of long-term debt 99,850  144,525 
Accounts payable 94,552  201,498 
Accrued expenses and other 247,287  250,579 
Regulatory liabilities 28,444  21,145 
      Total current liabilities  473,346  620,845 
Long-term finance leases 7,192  8,799 
Long-term debt 2,558,192  2,474,357 
Deferred income taxes 546,066  538,983 
Noncurrent regulatory liabilities 666,060  654,213 
Other noncurrent liabilities 356,662  355,403 
      Total Liabilities  4,607,518  4,652,600 
Commitments and Contingencies (Note 10)
Shareholders' Equity:    
Common stock, par value $0.01; authorized 200,000,000 shares; issued and outstanding 63,517,861 and 59,991,283 shares, respectively; Preferred stock, par value $0.01; authorized 50,000,000 shares; none issued
635  633 
Treasury stock at cost (98,302) (98,392)
Paid-in capital 2,015,367  1,999,376 
Retained earnings 776,983  771,414 
Accumulated other comprehensive loss (7,959) (7,848)
Total Shareholders' Equity  2,686,724  2,665,183 
Total Liabilities and Shareholders' Equity $ 7,294,242  $ 7,317,783 

See Notes to Condensed Consolidated Financial Statements
7


NORTHWESTERN CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)
(in thousands)
  Six Months Ended June 30,
  2023 2022
OPERATING ACTIVITIES:    
Net income $ 81,654  $ 88,896 
Items not affecting cash:  
Depreciation and depletion 105,628  97,117 
Amortization of debt issuance costs, discount and deferred hedge gain 2,636  2,546 
Stock-based compensation costs 4,868  4,002 
Equity portion of allowance for funds used during construction (7,812) (6,653)
Loss on disposition of assets (20) (1)
Deferred income taxes (10,005) (3,394)
Changes in current assets and liabilities:
Accounts receivable 97,779  52,629 
Inventories (218) (18,405)
Other current assets 2,474  (1,474)
Accounts payable (63,127) 10,877 
Accrued expenses and other (3,029) 10,072 
Regulatory assets 83,139  9,035 
Regulatory liabilities 7,299  (9,904)
Other noncurrent assets 1,454  7,517 
Other noncurrent liabilities (8,655) (9,967)
Cash Provided by Operating Activities 294,065  232,893 
INVESTING ACTIVITIES:    
Property, plant, and equipment additions (263,362) (234,438)
Investment in equity securities (2,426) (914)
Cash Used in Investing Activities (265,788) (235,352)
FINANCING ACTIVITIES:    
Proceeds from issuance of common stock, net 10,802  99,903 
Dividends on common stock (76,085) (67,806)
Issuance of long-term debt 300,000  — 
Line of credit repayments, net (259,000) (21,000)
Other financing activities, net (2,437) (1,320)
Cash (Used in) Provided by Financing Activities (26,720) 9,777 
Increase in Cash, Cash Equivalents, and Restricted Cash 1,557  7,318 
Cash, Cash Equivalents, and Restricted Cash, beginning of period 22,463  18,762 
Cash, Cash Equivalents, and Restricted Cash, end of period  $ 24,020  $ 26,080 
Supplemental Cash Flow Information:    
Cash paid during the period for:    
Income taxes $ 3,204  $ 1,634 
Interest 51,047  44,537 
Significant non-cash transactions:    
Capital expenditures included in accounts payable 20,938  24,116 
Refinancing of Pollution Control Revenue Refunding Bonds 144,660  — 
See Notes to Condensed Consolidated Financial Statements
8


NORTHWESTERN CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(Unaudited)

(in thousands, except per share data)

Three Months Ended June 30,
Number of Common Shares Number of Treasury Shares Common Stock Treasury Stock Paid in Capital Retained Earnings Accumulated Other Comprehensive Loss  Total Shareholders' Equity
Balance at March 31, 2022 57,693  3,556  $ 577  $ (98,986) $ 1,719,070  $ 753,677  $ (7,357) $ 2,366,981 
Net income —  —  —  —  —  29,786  —  29,786 
Foreign currency translation adjustment, net of tax —  —  —  —  —  — 
Reclassification of net losses on derivative instruments from OCI to net income, net of tax —  —  —  —  —  —  113  113 
Postretirement medical liability adjustment, net of tax —  —  —  —  —  —  (158) (158)
Stock-based compensation —  —  —  —  1,230  —  —  1,230 
Issuance of shares 2,004  (8) 20  221  100,231  —  —  100,472 
Dividends on common stock ($0.630 per share)
—  —  —  —  —  (33,905) —  (33,905)
Balance at June 30, 2022 59,697 3,548 $ 597  $ (98,765) $ 1,820,531  $ 749,558  $ (7,401) $ 2,464,520 
Balance at March 31, 2023 63,326 3,533 $ 633  $ (98,471) $ 2,002,839  $ 795,903  $ (7,904) $ 2,693,000 
Net income —  —  —  —  —  19,124  —  19,124 
Foreign currency translation adjustment, net of tax —  —  —  —  —  —  (1) (1)
Reclassification of net losses on derivative instruments from OCI to net income, net of tax —  —  —  —  —  —  113  113 
Postretirement medical liability adjustment, net of tax —  —  —  —  —  —  (167) (167)
Stock-based compensation —  —  —  1,378  —  —  1,378 
Issuance of shares 189  (6) 169  11,150  —  —  11,321 
Dividends on common stock ($0.640 per share)
—  —  —  —  —  (38,044) —  (38,044)
Balance at June 30, 2023 63,518 3,527 $ 635  $ (98,302) $ 2,015,367  $ 776,983  $ (7,959) $ 2,686,724 

9


Six Months Ended June 30,
Number of Common Shares Number of Treasury Shares Common Stock Treasury Stock Paid in Capital Retained Earnings Accumulated Other Comprehensive Loss  Total Shareholders' Equity
Balance at December 31, 2021 57,606  3,546  $ 576  $ (98,248) $ 1,716,227  $ 728,468  $ (7,310) $ 2,339,713 
Net income —  —  —  —  —  88,896  —  88,896 
Foreign currency translation adjustment, net of tax —  —  —  —  —  —  (1) (1)
Reclassification of net losses on derivative instruments from OCI to net income, net of tax —  —  —  —  —  —  226  226 
Postretirement medical liability adjustment, net of tax —  —  —  —  —  —  (316) (316)
Stock-based compensation 87  16  (911) 3,976  —  —  3,066 
Issuance of shares 2,004  (14) 20  394  100,328  —  —  100,742 
Dividends on common stock ($1.260 per share)
—  —  —  —  —  (67,806) —  (67,806)
Balance at June 30, 2022 59,697 3,548 $ 597  $ (98,765) $ 1,820,531  $ 749,558  $ (7,401) $ 2,464,520 
Balance at December 31, 2022 63,278 3,534 $ 633  $ (98,392) $ 1,999,376  $ 771,414  $ (7,848) $ 2,665,183 
Net income —  —  —  —  —  81,654  —  81,654 
Foreign currency translation adjustment, net of tax —  —  —  —  —  —  (3) (3)
Reclassification of net losses on derivative instruments from OCI to net income, net of tax —  —  —  —  —  —  226  226 
Postretirement medical liability adjustment, net of tax —  —  —  —  —  —  (334) (334)
Stock-based compensation 51  —  —  —  4,672  —  —  4,672 
Issuance of shares 189  (7) 90  11,319  —  —  11,411 
Dividends on common stock ($1.280 per share)
—  —  —  —  —  (76,085) —  (76,085)
Balance at June 30, 2023 63,518 3,527 $ 635  $ (98,302) $ 2,015,367  $ 776,983  $ (7,959) $ 2,686,724 

See Notes to Condensed Consolidated Financial Statements

10


NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(Reference is made to Notes to Financial Statements included in NorthWestern Corporation’s Annual Report)
(Unaudited)

(1) Nature of Operations and Basis of Consolidation
 
NorthWestern Corporation, doing business as NorthWestern Energy, provides electricity and/or natural gas to approximately 764,200 customers in Montana, South Dakota, Nebraska and Yellowstone National Park. We have generated and distributed electricity in South Dakota and distributed natural gas in South Dakota and Nebraska since 1923 and have generated and distributed electricity and distributed natural gas in Montana since 2002.

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP) requires us to make estimates and assumptions that may affect the reported amounts of assets, liabilities, revenues and expenses during the reporting period. Actual results could differ from those estimates. The unaudited Condensed Consolidated Financial Statements (Financial Statements) reflect all adjustments (which unless otherwise noted are normal and recurring in nature) that are, in our opinion, necessary to fairly present our financial position, results of operations and cash flows. The actual results for the interim periods are not necessarily indicative of the operating results to be expected for a full year or for other interim periods. Events occurring subsequent to June 30, 2023 have been evaluated as to their potential impact to the Financial Statements through the date of issuance.

The Financial Statements included herein have been prepared by NorthWestern, without audit, pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations; however, we believe that the condensed disclosures provided are adequate to make the information presented not misleading. We recommend that these Financial Statements be read in conjunction with the audited financial statements and related footnotes included in our Annual Report on Form 10-K for the year ended December 31, 2022.

Supplemental Cash Flow Information

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows (in thousands):
June 30, December 31, June 30, December 31,
2023 2022 2022 2021
Cash and cash equivalents $ 7,757  $ 8,489  $ 8,117  $ 2,820 
Restricted cash 16,263  13,974  17,963  15,942 
Total cash, cash equivalents, and restricted cash shown in the Condensed Consolidated Statements of Cash Flows $ 24,020  $ 22,463  $ 26,080  $ 18,762 
Goodwill

We completed our annual goodwill impairment test as of April 1, 2023. We evaluated qualitative factors (including macroeconomic conditions, industry and market considerations, cost factors, and overall financial performance) to determine whether it was more likely than not that the fair value of our reporting units was less than its carrying amount. Our evaluation of these factors concluded that it was not more likely than not that the fair value of our reporting units was less than its carrying amount and therefore no further testing was necessary.


11


(2) Regulatory Matters

Except as set forth below, the circumstances set forth in Note 3 - Regulatory Matters to the financial statements included in our Annual Report on the Form 10-K for the year ended December 31, 2022 appropriately represent, in all material respects, the current status of our regulatory matters.

Montana Rate Review

On August 8, 2022, we filed a Montana electric and natural gas rate review with the Montana Public Service Commission (MPSC) requesting an annual increase to electric and natural gas utility rates. On September 28, 2022, the MPSC approved interim rates effective October 1, 2022, subject to refund. Subsequently, we modified our request through rebuttal testimony. On April 3, 2023, we filed a settlement with certain parties, which is subject to approval by the MPSC. The details of our rebuttal request, interim rates granted, and settlement agreement are set forth below:

Requested Revenue Increase Through Rebuttal Testimony (in millions)
Electric Natural Gas
Base Rates $90.6 $22.4
Power Cost & Credit Mechanism (PCCAM)(1)
$69.7 n/a
Property Tax (tracker base adjustment)(1)
$14.5 $4.2
Total Revenue Increase Requested through Rebuttal Testimony $174.8 $26.6
Interim Revenue Increase Granted (in millions)
Electric Natural Gas
Base Rates $29.4 $1.7
PCCAM(1)
$61.1 n/a
Property Tax (tracker base adjustment)(1)(2)
$10.8 $2.9
Total Interim Revenue Granted $101.3 $4.6
Requested Revenue Increase Through Settlement Agreement (in millions)
Electric Natural Gas
Base Rates $67.4 $14.1
PCCAM(1)
$69.7 n/a
Property Tax (tracker base adjustment)(1)
$14.5 $4.2
Total Revenue Increase Requested Through Settlement Agreement $151.6 $18.3
(1) These items are flow-through costs. PCCAM reflects our fuel and purchased power costs.
(2) Our requested interim property tax base increases went into effect on January 1, 2023, as part of our 2023 property tax tracker filing.

The settlement includes, among other things, agreement on electric and natural gas base revenue increases, allocated cost of service, rate design, updates to the base amount of revenues associated with property taxes and electric supply costs, and regulatory policy issues related to requested changes in regulatory mechanisms. The settlement is based on a 48.02 percent equity component of our capital structure and an authorized return on equity (ROE) of 9.65 percent for electric operations and 9.55 percent for natural gas operations, which are consistent with current authorized ROE.

The settlement agreement provides for an update to the PCCAM by adjusting the base costs from $138.7 million to $208.4 million and providing for more timely quarterly recovery of deferred balances instead of annual recovery. It also addresses the potential for future recovery of certain operating costs associated with the Yellowstone County Generating Station and provides for the deferral of incremental operating costs related to our Enhanced Wildfire Mitigation Plan. The settling parties agreed to terminate the pilot decoupling program (Fixed Cost Recovery Mechanism) and that the proposed business technology rider will not be implemented.

A hearing on the settlement agreement was held in April 2023, post-hearing briefing concluded in June 2023, and we expect a decision from the MPSC during the third quarter of 2023. Interim rates remain in effect on a refundable basis until the MPSC issues a final order.

South Dakota Electric Rate Review
12



On June 15, 2023, we filed a South Dakota electric rate review filing (2022 test year) under Docket EL23-016 for an annual increase to electric rates totaling approximately $30.9 million. Our request was based on a ROE of 10.7 percent, a capital structure including 50.5 percent equity, and rate base of $787.3 million.

Holding Company Filings

On June 1, 2022, we filed a legal corporate restructuring application (Restructuring Plan) with the state commissions in Montana, South Dakota and Nebraska and the Federal Energy Regulatory Commission (FERC). Currently, our utility businesses are held in the same legal entity. Under the Restructuring Plan, we proposed to legally separate our Montana public utility business from our South Dakota and Nebraska public utility business and establish a holding company to hold the ownership interests of all of the subsidiaries. The purpose of the reorganization is to segregate our organizational structure to be more transparent and in line with the public utility industry. The Restructuring Plan does not include substantive changes in how the state public utility commissions regulate those services. We have received all necessary regulatory approvals and we expect to effectuate the Restructuring Plan by early 2024.

(3) Income Taxes
 
We compute income tax expense for each quarter based on the estimated annual effective tax rate for the year, adjusted for certain discrete items. Our effective tax rate typically differs from the federal statutory tax rate due to the regulatory impact of flowing through the federal and state tax benefit of repairs deductions, state tax benefit of accelerated tax depreciation deductions (including bonus depreciation when applicable) and production tax credits. The regulatory accounting treatment of these deductions requires immediate income recognition for temporary tax differences of this type, which is referred to as the flow-through method. When the flow-through method of accounting for temporary differences is reflected in regulated revenues, we record deferred income taxes and establish related regulatory assets and liabilities.

The following table summarizes the differences between our effective tax rate and the federal statutory rate (in thousands):
  Three Months Ended June 30,
2023 2022
Income before income taxes $ 21,271  $ 31,221 
Income tax calculated at federal statutory rate 4,467  21.0  % 6,554  21.0  %
Permanent or flow-through adjustments:
State income tax, net of federal provisions 273  1.3  431  1.4 
Flow-through repairs deductions (1,708) (8.0) (3,313) (10.6)
Production tax credits (1,147) (5.4) (2,558) (8.2)
Amortization of excess deferred income tax (233) (1.1) (162) (0.5)
Plant and depreciation flow-through items 201  0.9  398  1.3 
Other, net 294  1.4  85  0.2 
(2,320) (10.9) (5,119) (16.4)
Income tax expense $ 2,147  10.1  % $ 1,435  4.6  %
13


  Six Months Ended June 30,
2023 2022
Income before income taxes $ 94,042  $ 91,442 
Income tax calculated at federal statutory rate 19,749  21.0  % 19,200  21.0  %
Permanent or flow through adjustments:
State income, net of federal provisions 1,232  1.3  831  0.9 
Flow-through repairs deductions (7,553) (8.0) (10,114) (11.1)
Production tax credits (4,346) (4.6) (6,382) (7.0)
Reduction to previously claimed alternative minimum tax credit 3,186  3.4  —  — 
Amortization of excess deferred income tax (1,032) (1.1) (573) (0.6)
Share-based compensation 388  0.4  (253) (0.3)
Plant and depreciation flow through items 889  0.9  143  0.2 
Other, net (125) (0.1) (306) (0.3)
(7,361) (7.8) (16,654) (18.2)
Income tax expense $ 12,388  13.2  % $ 2,546  2.8  %
Uncertain Tax Positions

We recognize tax positions that meet the more-likely-than-not threshold as the largest amount of tax benefit that is greater than 50 percent likely of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. We had unrecognized tax benefits of approximately $29.5 million as of June 30, 2023, including approximately $27.8 million that, if recognized, would impact our effective tax rate. We do not anticipate that total unrecognized tax benefits will significantly change due to the settlement of audits or the expiration of statutes of limitation within the next twelve months.

Our policy is to recognize interest and penalties related to uncertain tax positions in income tax expense. As of June 30, 2023, we have accrued $2.1 million for the payment of interest and penalties on the Condensed Consolidated Balance Sheets. As of December 31, 2022, we had accrued $1.4 million for the payment of interest and penalties on the Condensed Consolidated Balance Sheets.

Tax years 2019 and forward remain subject to examination by the Internal Revenue Service (IRS) and state taxing authorities. During the first quarter of 2023 the IRS commenced and concluded a limited scope examination of our 2019 amended federal income tax return. This examination resulted in a reduction to our previously claimed alternative minimum tax credit refund that is reflected in the table above.

(4) Comprehensive (Loss) Income

The following tables display the components of Other Comprehensive (Loss) Income, after-tax, and the related tax effects (in thousands):
Three Months Ended
June 30, 2023 June 30, 2022
  Before-Tax Amount Tax Expense Net-of-Tax Amount Before-Tax Amount Tax Expense Net-of-Tax Amount
Foreign currency translation adjustment $ (1) $ —  $ (1) $ $ —  $
Reclassification of net income on derivative instruments 153  (40) 113  153  (40) 113 
Postretirement medical liability adjustment (212) 45  (167) (212) 54  (158)
Other comprehensive (loss) income $ (60) $ $ (55) $ (58) $ 14  $ (44)

14


Six Months Ended
June 30, 2023 June 30, 2022
  Before-Tax Amount Tax Expense Net-of-Tax Amount Before-Tax Amount Tax Expense Net-of-Tax Amount
Foreign currency translation adjustment $ (3) $ —  $ (3) $ (1) $ —  $ (1)
Reclassification of net income on derivative instruments 306  (80) 226  306  (80) 226 
Postretirement medical liability adjustment (424) 90  (334) (424) 108  (316)
Other comprehensive (loss) income $ (121) $ 10  $ (111) $ (119) $ 28  $ (91)

Balances by classification included within accumulated other comprehensive loss (AOCL) on the Condensed Consolidated Balance Sheets are as follows, net of tax (in thousands):
  June 30, 2023 December 31, 2022
Foreign currency translation $ 1,432  $ 1,435 
Derivative instruments designated as cash flow hedges (9,599) (9,825)
Postretirement medical plans 208  542 
Accumulated other comprehensive loss $ (7,959) $ (7,848)

The following tables display the changes in AOCL by component, net of tax (in thousands):
Three Months Ended
June 30, 2023
Affected Line Item in the Condensed Consolidated Statements of Income Interest Rate Derivative Instruments Designated as Cash Flow Hedges Postretirement Medical Plans Foreign Currency Translation Total
Beginning balance $ (9,712) $ 375  $ 1,433  $ (7,904)
Other comprehensive loss before reclassifications —  —  (1) (1)
Amounts reclassified from AOCL Interest Expense 113  —  —  113 
Amounts reclassified from AOCL —  (167) —  (167)
Net current-period other comprehensive income (loss) 113  (167) (1) (55)
Ending balance $ (9,599) $ 208  $ 1,432  $ (7,959)

15


Three Months Ended
June 30, 2022
Affected Line Item in the Condensed Consolidated Statements of Income Interest Rate Derivative Instruments Designated as Cash Flow Hedges Postretirement Medical Plans Foreign Currency Translation Total
Beginning balance $ (10,164) $ 1,366  $ 1,441  $ (7,357)
Other comprehensive loss before reclassifications —  — 
Amounts reclassified from AOCL Interest Expense 113  —  —  113 
Amounts reclassified from AOCL —  (158) —  (158)
Net current-period other comprehensive income (loss) 113  (158) (44)
Ending balance $ (10,051) $ 1,208  $ 1,442  $ (7,401)

Six Months Ended
June 30, 2023
Affected Line Item in the Condensed Consolidated Statements of Income Interest Rate Derivative Instruments Designated as Cash Flow Hedges Pension and Postretirement Medical Plans Foreign Currency Translation Total
Beginning balance $ (9,825) $ 542  $ 1,435  $ (7,848)
Other comprehensive loss before reclassifications —  —  (3) (3)
Amounts reclassified from AOCL Interest Expense 226  —  —  226 
Amounts reclassified from AOCL —  (334) —  (334)
Net current-period other comprehensive income (loss) 226  (334) (3) (111)
Ending balance $ (9,599) $ 208  $ 1,432  $ (7,959)

Six Months Ended
June 30, 2022
Affected Line Item in the Condensed Consolidated Statements of Income Interest Rate Derivative Instruments Designated as Cash Flow Hedges Pension and Postretirement Medical Plans Foreign Currency Translation Total
Beginning balance $ (10,277) $ 1,524  $ 1,443  $ (7,310)
Other comprehensive loss before reclassifications —  —  (1) (1)
Amounts reclassified from AOCL Interest Expense 226  —  —  226 
Amounts reclassified from AOCL —  (316) —  (316)
Net current-period other comprehensive income (loss) 226  (316) (1) (91)
Ending balance $ (10,051) $ 1,208  $ 1,442  $ (7,401)
16


(5) Financing Activities

On March 30, 2023, we issued and sold $239.0 million aggregate principal amount of Montana First Mortgage Bonds at a fixed interest rate of 5.57 percent maturing on March 30, 2033. On this same day, we issued and sold $31.0 million aggregate principal amount of South Dakota First Mortgage Bonds at a fixed interest rate of 5.57 percent maturing on March 30, 2033. On May 1, 2023, we issued and sold an additional $30.0 million aggregate principal amount of South Dakota First Mortgage Bonds at a fixed interest rate of 5.42 percent maturing on May 1, 2033. These bonds were issued in transactions exempt from the registration requirements of the Securities Act of 1933. Proceeds were used to repay a portion of our outstanding borrowings under our revolving credit facilities and for other general corporate purposes. The bonds are secured by our electric and natural gas assets in Montana and South Dakota.

In June 2023, we amended our Equity Distribution Agreement to replace one of the sales agents. Pursuant to the Equity Distribution Agreement we may offer and sell shares of our common stock from time to time, having an aggregate gross sales price of up to $200.0 million, through an At-the-Market (ATM) offering program, including an equity forward sales component. This is a three-year agreement, expiring on February 11, 2024. During the three months ended June 30, 2023, we issued 188,682 shares of common stock under the ATM program at an average price of $57.83 per share, for net proceeds of $10.8 million which is net of sales commissions and other fees paid of approximately $0.1 million.

On June 29, 2023, the City of Forsyth, Rosebud County, Montana issued $144.7 million principal amount of Pollution Control Revenue Refunding Bonds (2023 Pollution Control Bonds) on our behalf. The 2023 Pollution Control Bonds were issued at a fixed interest rate of 3.88 percent maturing on July 1, 2028. The proceeds of the issuance were loaned to us pursuant to a Loan Agreement and were deposited directly with U.S. Bank Trust Company, National Association, as trustee, for the redemption of the 2.00 percent, $144.7 million City of Forsyth Pollution Control Revenue Refunding Bonds due on August 1, 2023 that had previously been issued on our behalf. Pursuant to the Loan Agreement, we are obligated to make payments in such amounts and at such times as will be sufficient to pay, when due, the principal and interest on the 2023 Pollution Control Bonds. Our obligations under the Loan Agreement are secured by delivery of a like amount of our Montana First Mortgage Bonds, which are secured by our Montana electric and natural gas assets. So long as we are making payments under the Loan Agreement, no payments under these mortgage bonds will be due. The 2023 Pollution Control Bonds were issued in a transaction exempt from the registration requirements of the Securities Act of 1933, as amended.


(6) Segment Information
 
Our reportable business segments are primarily engaged in the electric and natural gas business. The remainder of our operations are presented as other, which primarily consists of unallocated corporate costs and unregulated activity.

We evaluate the performance of these segments based on utility margin. The accounting policies of the operating segments are the same as the parent except that the parent allocates some of its operating expenses to the operating segments according to a methodology designed by us for internal reporting purposes and involves estimates and assumptions.

Financial data for the business segments are as follows (in thousands):
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Three Months Ended        
June 30, 2023 Electric Gas Other Eliminations Total
Operating revenues $ 229,266  $ 61,236  $ —  $ —  $ 290,502 
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below) 42,363  25,215  —  —  67,578 
Utility margin 186,903  36,021  —  —  222,924 
Operating and maintenance 41,368  13,472  —  —  54,840 
Administrative and general 21,635  8,321  (1) —  29,955 
Property and other taxes 31,022  9,104  —  40,129 
Depreciation and depletion 43,319  9,061  —  —  52,380 
Operating income (loss) 49,559  (3,937) (2) —  45,620 
Interest expense, net (21,724) (4,490) (2,197) —  (28,411)
Other income (expense), net 2,954  1,144  (36) —  4,062 
Income tax (expense) benefit (3,515) (373) 1,741  —  (2,147)
Net income (loss) $ 27,274  $ (7,656) $ (494) $ —  $ 19,124 
Total assets $ 5,878,433  $ 1,406,068  $ 9,741  $ —  $ 7,294,242 
Capital expenditures $ 94,690  $ 32,068  $ —  $ —  $ 126,758 

Three Months Ended
June 30, 2022 Electric Gas Other Eliminations Total
Operating revenues $ 243,418  $ 79,586  $ —  $ —  $ 323,004 
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below) 57,696  37,305  —  —  95,001 
Utility margin 185,722  42,281  —  —  228,003 
Operating and maintenance 40,822  12,515  —  —  53,337 
Administrative and general 20,115  7,171  (66) —  27,220 
Property and other taxes 36,426  10,465  —  46,893 
Depreciation and depletion 40,185  8,027  —  —  48,212 
Operating income 48,174  4,103  64  —  52,341 
Interest expense, net (18,837) (3,323) (1,873) —  (24,033)
Other income, net 1,319  1,412  182  —  2,913 
Income tax (expense) benefit (790) (1,000) 355  —  (1,435)
Net income (loss) $ 29,866  $ 1,192  $ (1,272) $ —  $ 29,786 
Total assets $ 5,593,989  $ 1,319,829  $ 6,479  $ —  $ 6,920,297 
Capital expenditures $ 91,673  $ 27,263  $ —  $ —  $ 118,936 
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Six Months Ended        
June 30, 2023 Electric Gas Other Eliminations Total
Operating revenues $ 524,574  $ 220,470  $ —  $ —  $ 745,044 
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below) 120,497  112,573  —  —  233,070 
Utility margin 404,077  107,897  —  —  511,974 
Operating and maintenance 83,781  26,920  —  —  110,701 
Administrative and general 46,603  18,087  13  —  64,703 
Property and other taxes 69,273  20,002  —  89,280 
Depreciation and depletion 87,217  18,411  —  —  105,628 
Operating income 117,203  24,477  (18) —  141,662 
Interest expense, net (40,284) (7,741) (8,394) —  (56,419)
Other income (expense), net 6,320  2,559  (80) —  8,799 
Income tax expense (10,143) (139) (2,106) —  (12,388)
Net income (loss) $ 73,096  $ 19,156  $ (10,598) $ —  $ 81,654 
Total assets $ 5,878,433  $ 1,406,068  $ 9,741  $ —  $ 7,294,242 
Capital expenditures $ 215,509  $ 47,853  $ —  $ —  $ 263,362 
Six Months Ended
June 30, 2022 Electric Gas Other Eliminations Total
Operating revenues $ 515,145  $ 202,341  $ —  $ —  $ 717,486 
Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below) 135,319  94,755  —  —  230,074 
Utility margin 379,826  107,586  —  —  487,412 
Operating and maintenance 80,323  25,808  —  —  106,131 
Administrative and general 42,852  15,823  189  —  58,864 
Property and other taxes 72,851  20,888  —  93,743 
Depreciation and depletion 80,609  16,508  —  —  97,117 
Operating income (loss) 103,191  28,559  (193) —  131,557 
Interest expense, net (37,806) (6,713) (3,230) —  (47,749)
Other income, net 4,301  2,942  391  —  7,634 
Income tax (expense) benefit (1,784) (2,382) 1,620  —  (2,546)
Net income (loss) $ 67,902  $ 22,406  $ (1,412) $ —  $ 88,896 
Total assets $ 5,593,989  $ 1,319,829  $ 6,479  $ —  $ 6,920,297 
Capital expenditures $ 190,282  $ 44,156  $ —  $ —  $ 234,438 
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(7)  Revenue from Contracts with Customers

Nature of Goods and Services

We provide retail electric and natural gas services to three primary customer classes. Our largest customer class consists of residential customers, which includes single private dwellings and individual apartments. Our commercial customers consist primarily of main street businesses, and our industrial customers consist primarily of manufacturing and processing businesses that turn raw materials into products.

Electric Segment - Our regulated electric utility business primarily provides generation, transmission, and distribution services to customers in our Montana and South Dakota jurisdictions. We recognize revenue when electricity is delivered to the customer. Payments on our tariff-based sales are generally due 20-30 days after the billing date.

Natural Gas Segment - Our regulated natural gas utility business primarily provides production, storage, transmission, and distribution services to customers in our Montana, South Dakota, and Nebraska jurisdictions. We recognize revenue when natural gas is delivered to the customer. Payments on our tariff-based sales are generally due 20-30 days after the billing date.

Disaggregation of Revenue

The following tables disaggregate our revenue by major source and customer class (in millions):
Three Months Ended
June 30, 2023 June 30, 2022
Electric Natural Gas Total Electric Natural Gas Total
Montana $ 83.8  $ 17.6  $ 101.4  $ 70.7  $ 28.6  $ 99.3 
South Dakota 15.7  8.4  24.1  15.6  9.4  25.0 
Nebraska —  7.4  7.4  —  7.4  7.4 
Residential 99.5  33.4  132.9  86.3  45.4  131.7 
Montana 101.9  9.9  111.8  84.3  14.7  99.0 
South Dakota 25.1  5.5  30.6  26.5  6.4  32.9 
Nebraska —  4.7  4.7  —  4.5  4.5 
Commercial 127.0  20.1  147.1  110.8  25.6  136.4 
Industrial 10.8  0.2  11.0  9.0  0.2  9.2 
Lighting, governmental, irrigation, and interdepartmental 8.7  0.3  9.0  8.3  0.5  8.8 
Total Customer Revenues 246.0  54.0  300.0  214.4  71.7  286.1 
Other tariff and contract based revenues 20.0  10.6  30.6  21.6  9.2  30.8 
Total Revenue from Contracts with Customers 266.0  64.6  330.6  236.0  80.9  316.9 
Regulatory amortization and other (36.7) (3.4) (40.1) 7.4  (1.3) 6.1 
Total Revenues $ 229.3  $ 61.2  $ 290.5  $ 243.4  $ 79.6  $ 323.0 

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Six Months Ended
June 30, 2023 June 30, 2022
Electric Natural Gas Total Electric Natural Gas Total
Montana $ 209.3  $ 84.5  $ 293.8  $ 167.7  $ 80.9  $ 248.6 
South Dakota 35.5  28.3  63.8  36.0  29.3  65.3 
Nebraska —  28.0  28.0  —  22.8  22.8 
   Residential 244.8  140.8  385.6  203.7  133.0  336.7 
Montana 214.5  46.3  260.8  170.8  41.8  212.6 
South Dakota 50.3  19.8  70.1  54.1  20.9  75.0 
Nebraska —  17.8  17.8  —  13.7  13.7 
   Commercial 264.8  83.9  348.7  224.9  76.4  301.3 
Industrial 22.6  0.9  23.5  18.7  0.8  19.5 
Lighting, governmental, irrigation, and interdepartmental 13.9  1.0  14.9  12.8  1.2  14.0 
Total Customer Revenues 546.1  226.6  772.7  460.1  211.4  671.5 
Other tariff and contract based revenues 41.3  22.9  64.2  41.7  19.2  60.9 
Total Revenue from Contracts with Customers 587.4  249.5  836.9  501.8  230.6  732.4 
Regulatory amortization and other (62.8) (29.1) (91.9) 13.3  (28.2) (14.9)
Total Revenues $ 524.6  $ 220.4  $ 745.0  $ 515.1  $ 202.4  $ 717.5 
(8) Earnings Per Share
 
Basic earnings per share are computed by dividing earnings applicable to common stock by the weighted average number of common shares outstanding for the period. Diluted earnings per share reflect the potential dilution of common stock equivalent shares that could occur if unvested shares were to vest. Common stock equivalent shares are calculated using the treasury stock method, as applicable. The dilutive effect is computed by dividing earnings applicable to common stock by the weighted average number of common shares outstanding plus the effect of the outstanding unvested restricted stock and performance share awards and forward equity sale. Average shares used in computing the basic and diluted earnings per share are as follows:
Three Months Ended
June 30, 2023 June 30, 2022
Basic computation 59,804,283  54,271,862 
Dilutive effect of:
Performance share awards(1)
45,391  34,900 
Forward equity sale(2)
—  834,126 
Diluted computation 59,849,674  55,140,888 
Six Months Ended
June 30, 2023 June 30, 2022
Basic computation 59,790,316  54,184,798 
  Dilutive effect of:  
Performance share awards(1)
29,200  23,072 
Forward equity sale(2)
—  772,755 
Diluted computation 59,819,516  54,980,625 
(1) Performance share awards are included in diluted weighted average number of shares outstanding based upon what would be issued if the end of the most recent reporting period was the end of the term of the award.
(2) Forward equity shares are included in diluted weighted average number of shares outstanding based upon what would be issued if the end of the most recent reporting period was the end of the term of the forward sale agreement.

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As of June 30, 2023, there were 21,890 shares from performance and restricted share awards which were antidilutive and excluded from the earnings per share calculations, compared to 36,296 shares as of June 30, 2022.

(9) Employee Benefit Plans
 
We sponsor and/or contribute to pension and postretirement health care and life insurance benefit plans for eligible employees. Net periodic benefit cost (credit) for our pension and other postretirement plans consists of the following (in thousands):
  Pension Benefits Other Postretirement Benefits
  Three Months Ended June 30, Three Months Ended June 30,
  2023 2022 2023 2022
Components of Net Periodic Benefit Cost (Credit)        
Service cost $ 1,422  $ 2,228  $ 79  $ 84 
Interest cost 6,482  4,725  161  88 
Expected return on plan assets (6,671) (6,034) (273) (261)
Amortization of prior service credit —  —  29  (473)
Recognized actuarial (gain) loss (3) 191  (10)
Net periodic benefit cost (credit) $ 1,230  $ 1,110  $ $ (572)

  Pension Benefits Other Postretirement Benefits
  Six Months Ended June 30, Six Months Ended June 30,
  2023 2022 2023 2022
Components of Net Periodic Benefit Cost (Credit)        
Service cost $ 2,916  $ 5,112  $ 166  $ 175 
Interest cost 13,047  9,393  337  179 
Expected return on plan assets (13,357) (12,086) (548) (523)
Amortization of prior service credit —  —  58  (946)
Recognized actuarial loss (gain) 137  191  36  (24)
Net periodic benefit cost (credit) $ 2,743  $ 2,610  $ 49  $ (1,139)

We contributed $0.6 million to our pension plans during the three and six months ended June 30, 2023. We expect to contribute an additional $10.6 million to our pension plans during the remainder of 2023.

(10) Commitments and Contingencies

Except as set forth below and in Note 2 - Regulatory Matters above, the circumstances set forth in Note 18 - Commitments and Contingencies to the financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2022 appropriately represent, in all material respects, the current status of our material commitments and contingent liabilities.


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ENVIRONMENTAL LIABILITIES AND REGULATION
Environmental Matters

The operation of electric generating, transmission and distribution facilities, and gas gathering, storage, transportation and distribution facilities, along with the development (involving site selection, environmental assessments, and permitting) and construction of these assets, are subject to extensive federal, state, and local environmental and land use laws and regulations. Our activities involve compliance with diverse laws and regulations that address emissions and impacts to the environment, including air and water, protection of natural resources, avian and wildlife. We monitor federal, state, and local environmental initiatives to determine potential impacts on our financial results. As new laws or regulations are implemented, our policy is to assess their applicability and implement the necessary modifications to our facilities or their operation to maintain ongoing compliance.

Our environmental exposure includes a number of components, including remediation expenses related to the cleanup of current or former properties, and costs to comply with changing environmental regulations related to our operations. At present, our environmental reserve, which relates primarily to the remediation of former manufactured gas plant sites owned by us or for which we are responsible, is estimated to range between $20.9 million to $32.0 million. As of June 30, 2023, we had a reserve of approximately $25.7 million, which has not been discounted. Environmental costs are recorded when it is probable we are liable for the remediation and we can reasonably estimate the liability. We use a combination of site investigations and monitoring to formulate an estimate of environmental remediation costs for specific sites. Our monitoring procedures and development of actual remediation plans depend not only on site specific information but also on coordination with the different environmental regulatory agencies in our respective jurisdictions; therefore, while remediation exposure exists, it may be many years before costs are incurred.

Over time, as costs become determinable, we may seek authorization to recover such costs in rates or seek insurance reimbursement as available and applicable; therefore, although we cannot guarantee regulatory recovery, we do not expect these costs to have a material effect on our consolidated financial position or results of operations.

Global Climate Change - National and international actions have been initiated to address global climate change and the contribution of greenhouse gas (GHG) including, most significantly, carbon dioxide (CO2) and methane emissions from natural gas. These actions include legislative proposals, Executive, Congressional and Environmental Protection Agency (EPA) actions at the federal level, state level activity, investor activism and private party litigation relating to emissions. Coal-fired plants have come under particular scrutiny due to their level of emissions. We have joint ownership interests in four coal-fired electric generating plants, all of which are operated by other companies. We are responsible for our proportionate share of the capital and operating costs while being entitled to our proportionate share of the power generated.

Proposed EPA Rules - Congress has not passed any federal climate change legislation regarding GHG emissions from coal fired plants, and we cannot predict the timing or form of any potential legislation. Section 111(d) of the Clean Air Act (CAA) confers authority on EPA and the states to regulate emissions, including GHGs, from existing stationary sources. In May 2023, EPA proposed new GHG emissions standards for coal and natural gas-fired plants. In particular, the proposed rules would (i) strengthen the current New Source Performance Standards for newly built fossil fuel-fired stationary combustion turbines (generally natural gas-fired); (ii) establish emission guidelines for states to follow in limiting carbon pollution from existing fossil fuel-fired steam generating electric generating units (including coal, oil and natural gas-fired units); and (iii) establish emission guidelines for large, frequently used existing fossil fuel-fired stationary combustion turbines (generally natural gas-fired). In addition, in April 2023, EPA proposed to amend the Mercury Air Toxics Standard (MATS). Among other things, MATS currently sets stringent emission limits for acid gases, mercury, and other hazardous air pollutants from new and existing electric generating units. We are in compliance with existing MATS requirements. The proposed amendment of the MATS would strengthen the MATS requirements, and if adopted as written, both the GHG and MATS proposed rules could have a material negative impact on our coal-fired plants, including requiring potentially expensive upgrades or the early retirement of Colstrip Unit's 3 and 4 due to the rules making the facility uneconomic.

Previous efforts by the EPA were met with extensive litigation and we anticipate a similar response if the proposed rules are adopted. As MATS and GHG regulations are implemented, it could result in additional material compliance costs. We will continue working with federal and state regulatory authorities, other utilities, and stakeholders to seek relief from any MATS or GHG regulations that, in our view, disproportionately impact customers in our region.
Future additional environmental requirements - federal or state - could cause us to incur material costs of compliance, increase our costs of procuring electricity, decrease transmission revenue and impact cost recovery. Technology to efficiently capture, remove and/or sequester such GHG emissions or hazardous air pollutants may not be available within a timeframe consistent with the implementation of any such requirements.
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Physical impacts of climate change also may present potential risks for severe weather, such as droughts, fires, floods, wind, ice storms and tornadoes, in the locations where we operate or have interests. These potential risks may impact costs for electric and natural gas supply and maintenance of generation, distribution, and transmission facilities.

LEGAL PROCEEDINGS

State of Montana - Riverbed Rents

On April 1, 2016, the State of Montana (State) filed a complaint on remand (the State’s Complaint) with the Montana First Judicial District Court (State District Court), naming us, along with Talen Montana, LLC (Talen) as defendants. The State claimed it owns the riverbeds underlying 10 of our, and formerly Talen’s, hydroelectric facilities (dams, along with reservoirs and tailraces) on the Missouri, Madison and Clark Fork Rivers, and seeks rents for Talen’s and our use and occupancy of such lands. The facilities at issue include the Hebgen, Madison, Hauser, Holter, Black Eagle, Rainbow, Cochrane, Ryan, and Morony facilities on the Missouri and Madison Rivers and the Thompson Falls facility on the Clark Fork River. We acquired these facilities from Talen in November 2014.

The litigation has a long prior history in state and federal court, including before the United States Supreme Court, as detailed in Note 18 - Commitments and Contingencies to the financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2022. On April 20, 2016, we removed the case from State District Court to the United States District Court for the District of Montana (Federal District Court). On August 1, 2018, the Federal District Court granted our and Talen’s motions to dismiss the State’s Complaint as it pertains to the navigability of the riverbeds associated with four of our hydroelectric facilities near Great Falls. A bench trial before the Federal District Court commenced January 4, 2022, and concluded on January 18, 2022, which addressed the issue of navigability concerning our other six facilities. Damages were bifurcated by agreement and will be tried separately should the Federal District Court find any segments navigable. While we await the Federal District Court decision on navigability, the damages phase of the case remains stayed.

We dispute the State’s claims and intend to continue to vigorously defend the lawsuit. At this time, we cannot predict an outcome. If the Federal District Court determines the riverbeds are navigable under the remaining six facilities that were not dismissed and if it calculates damages as the State District Court did in 2008, we estimate the annual rents could be approximately $3.8 million commencing when we acquired the facilities in November 2014. We anticipate that any obligation to pay the State rent for use and occupancy of the riverbeds would be recoverable in rates from customers, although there can be no assurances that the MPSC would approve any such recovery.

Colstrip Arbitration

The remaining depreciable life of our investment in Colstrip Unit 4 is through 2042. The six owners of Colstrip Units 3 and 4 currently share the operating costs pursuant to the terms of an Ownership and Operation Agreement (O&O Agreement). However, several of the owners are mandated by Washington and Oregon law to eliminate coal-fired resources in 2025 and 2029, respectively.

As a result of the mandate, the owners have disagreed on various operational funding decisions, including whether closure requires each owner’s consent under the O&O Agreement. On March 12, 2021, we initiated an arbitration under the O&O Agreement (the “Arbitration”), to resolve the issues of whether closure requires each owner's consent and to clarify each owner's obligations to continue to fund operations until all joint owners agree on closure. The owners previously initiated efforts to identify arbitrators and have agreed to stay the Arbitration through September 29, 2023, while they explore a potential resolution to their disagreements.

Colstrip Coal Dust Litigation

On December 14, 2020, a claim was filed against Talen in the Montana Sixteenth Judicial District Court, Rosebud County, Cause No. CV-20-58. Talen is one of the co-owners of Colstrip Unit 3, and the operator of Units 3 and 4. The plaintiffs allege they have suffered adverse effects from coal dust generated during operations associated with Colstrip. On August 26, 2021, the claim was amended to add in excess of 100 plaintiffs. It also added NorthWestern, the other owners of Colstrip, and Westmoreland Rosebud Mining LLC, as defendants. Plaintiffs are seeking economic damages, costs and disbursements, punitive damages, attorneys’ fees, and an injunction prohibiting defendants from allowing coal dust to blow onto plaintiffs’ properties.

Since this lawsuit remains in its early discovery stages, we are unable to predict outcomes or estimate a range of reasonably possible losses.
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BNSF Demands for Indemnity and Remediation Costs

NorthWestern has received a demand for indemnity from BNSF Railway Company (BNSF) for past and future environmental investigation and remediation costs incurred by BNSF at one of the three operable units at the Anaconda Copper Mining (ACM) Smelter and Refinery Superfund Site, located near Great Falls, Montana. Smelter and refining operations at the site commenced in 1893 and continued until 1980.

According to EPA, the smelter and refining operations have contaminated soil, groundwater and surface water resources around the site with lead, arsenic and other metal wastes. ARCO (Atlantic Richfield Company) initiated reclamation and maintenance activities in the 1980s and 1990s. Between 2002 and 2008, the EPA conducted several site investigations. In March 2011, the EPA placed the ACM Smelter and Refinery Site on the Superfund program’s National Priority List. The Superfund Site is 427 acres and contains three operable units: Operable Unit 1 (consisting of five subsections including the Railroad Corridor and four other “areas of interest”), Operable Unit 2 (the former smelter and refinery site), and Operable Unit 3 (the Missouri River that flows along the south sides of Operable Units 1 and 2).

NorthWestern owns property in the Railroad Corridor sub-section of Operable Unit 1. BNSF claims it is entitled to indemnity and contribution from NorthWestern for the costs it has and will incur to investigate and remediate contamination in Operable Unit 1. BNSF reports it has incurred in excess of $4.4 million, pending final resolution, of response and oversight costs incurred by government agencies (EPA and Montana DEQ), in investigative and other response costs associated with Operable Unit 1, and that in the future it will incur additional costs to implement the final remedy for Operable Unit 1. In the Record of Decision (ROD) for Operable Unit 1 issued on August 21, 2021, the EPA estimated the costs to implement the selected remedies for the Railroad Corridor will be approximately $4.1 million. In the ROD, the EPA also estimated the costs to implement the selected remedy (including institutional controls) for the four “areas of interest” in Operable Unit 1 would be approximately $1.8 million, with annual operating costs of ten thousand dollars. We are evaluating BNSF’s claim and are unable at this time to predict outcomes or estimate a range of reasonably possible losses.

Yellowstone County Generating Station Air Permit

On October 21, 2021, the Montana Environmental Information Center (MEIC) and the Sierra Club filed a lawsuit in Montana State Court, against the Montana Department of Environmental Quality (MDEQ) and NorthWestern, alleging that the environmental analysis conducted by MDEQ prior to issuance of the Yellowstone County Generating Station's air quality construction permit was inadequate. On April 4, 2023, the Montana District Court issued an order finding MDEQ's environmental analysis was deficient in not addressing exterior lighting and greenhouse gases and remanded it back to MDEQ to address the deficiencies and vacated the air quality permit pending that remand. As a result of the vacatur of the permit, we paused construction. On June 8, 2023, the Montana District Court granted our motion to stay the order vacating the air quality permit pending the outcome of our notice of appeal with the Montana Supreme Court. We recommenced construction in June 2023 and expect the plant to be operational by the end of the third quarter 2024.

On May 10, 2023, Montana House Bill 971 was signed into law, preventing the MDEQ from considering climate impacts in its analysis of large projects such as coal mines and power plants, and on June 1, 2023, the MDEQ issued its supplemental air quality permit that contained the updated exterior lighting analysis, and the MDEQ indicated that no other analysis was necessary. The comment period concerning the MDEQ’s supplemental air quality permit ended on July 3, 2023. We expect to receive a final revised permit from the MDEQ during the third quarter of 2023. This current lawsuit, as well as additional potential legal challenges related to the Yellowstone County Generating Station, could delay the project timing and increase costs.

Other Legal Proceedings

We are also subject to various other legal proceedings, governmental audits and claims that arise in the ordinary course of business. In our opinion, the amount of ultimate liability with respect to these other actions will not materially affect our financial position, results of operations, or cash flows.
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ITEM 2.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Non-GAAP Financial Measure

The following discussion includes financial information prepared in accordance with GAAP, as well as another financial measure, Utility Margin, that is considered a “non-GAAP financial measure.” Generally, a non-GAAP financial measure is a numerical measure of a company’s financial performance, financial position or cash flows that excludes (or includes) amounts that are included in (or excluded from) the most directly comparable measure calculated and presented in accordance with GAAP. We define Utility Margin as Operating Revenues less fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion) as presented in our Condensed Consolidated Statements of Income. This measure differs from the GAAP definition of Gross Margin due to the exclusion of Operating and maintenance, Property and other taxes, and Depreciation and depletion expenses, which are presented separately in our Condensed Consolidated Statements of Income. The following discussion includes a reconciliation of Utility Margin to Gross Margin, the most directly comparable GAAP measure.

We believe that Utility Margin provides a useful measure for investors and other financial statement users to analyze our financial performance in that it excludes the effect on total revenues caused by volatility in energy costs and associated regulatory mechanisms. This information is intended to enhance an investor's overall understanding of results. Under our various state regulatory mechanisms, as detailed below, our supply costs are generally collected from customers. In addition, Utility Margin is used by us to determine whether we are collecting the appropriate amount of energy costs from customers to allow for recovery of operating costs, as well as to analyze how changes in loads (due to weather, economic or other conditions), rates and other factors impact our results of operations. Our Utility Margin measure may not be comparable to that of other companies' presentations or more useful than the GAAP information provided elsewhere in this report.

OVERVIEW

NorthWestern Corporation, doing business as NorthWestern Energy, provides electricity and/or natural gas to approximately 764,200 customers in Montana, South Dakota, Nebraska and Yellowstone National Park. For a discussion of NorthWestern’s business strategy, see Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2022.

We work to deliver safe, reliable, and innovative energy solutions that create value for customers, communities, employees, and investors. We do this by providing low-cost and reliable service performed by highly-adaptable and skilled employees. We are focused on delivering long-term shareholder value through:

•Infrastructure investment focused on a stronger and smarter grid to improve the customer experience, while enhancing grid reliability and safety. This includes automation in customer meters, distribution and substations that enables the use of proven new technologies.

•Investing in and integrating supply resources that balance reliability, cost, capacity, and sustainability considerations with more predictable long-term commodity prices.

•Continually improving our operating efficiency. Financial discipline is essential to earning our authorized return on invested capital and maintaining a strong balance sheet, stable cash flows, and quality credit ratings to continue to attract cost-effective capital for future investment.

We expect to pursue these investment opportunities and manage our business in a manner that allows us to be flexible in adjusting to changing economic conditions by adjusting the timing and scale of the projects.

We are committed to providing customers with reliable and affordable electric and natural gas services while also being good stewards of the environment. Towards this end, in 2022 we expanded and outlined our efforts towards a carbon-free future through our goal to achieve net zero carbon emissions by 2050.

As you read this discussion and analysis, refer to our Condensed Consolidated Statements of Income, which present the results of our operations for the three and six months ended June 30, 2023 and 2022.

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HOW WE PERFORMED AGAINST OUR SECOND QUARTER 2022 RESULTS
Three Months Ended
June 30, 2023 vs. 2022
Income Before Income Taxes Income Tax (Expense) Benefit Net Income
(in millions)
Second Quarter, 2022 $ 31.2  $ (1.4) $ 29.8 
Variance in revenue and fuel, purchased supply, and direct transmission expense(1) items impacting net income:
Lower natural gas retail volumes (5.3) 1.3  (4.0)
Lower electric retail volumes (3.5) 0.9  (2.6)
Lower electric transmission revenue (1.7) 0.4  (1.3)
Montana interim rates (subject to refund) 7.1  (1.8) 5.3 
Montana property tax tracker collections 3.3  (0.8) 2.5 
Lower non-recoverable Montana electric supply costs due to higher electric supply revenues and lower electric supply costs 3.0  (0.8) 2.2 
Natural gas transportation 0.4  (0.1) 0.3 
Other (0.4) 0.1  (0.3)
Variance in expense items(2) impacting net income:
Higher operating, maintenance, and administrative expenses (7.2) 1.8  (5.4)
Higher interest expense (4.4) 1.1  (3.3)
Higher depreciation expense (4.2) 1.1  (3.1)
Higher other state and local tax expense (0.9) 0.2  (0.7)
Prior year Montana Community Renewable Energy Projects (CREP) Penalty 2.5  —  2.5 
Other 1.4  (4.2) (2.8)
Second Quarter, 2023 $ 21.3  $ (2.2) $ 19.1 
Change in Net Income $ (10.7)
(1) Exclusive of depreciation and depletion shown separately below
(2) Excluding fuel, purchased supply, and direct transmission expense
Consolidated net income for the three months ended June 30, 2023 was $19.1 million as compared with $29.8 million for the same period in 2022. This decrease was primarily due to lower electric and natural gas retail volumes, lower transmission revenues, higher operating and maintenance expense, higher administrative and general expense, higher depreciation and depletion expense, higher interest expense, and higher income tax expense, partly offset by higher Montana interim rates associated with our ongoing rate review, which are subject to refund, higher Montana property tax tracker collections, and lower non-recoverable Montana electric supply costs.

SIGNIFICANT TRENDS AND REGULATION

Refer to our Annual Report on the Form 10-K for the year ended December 31, 2022 for disclosure of the significant trends and regulations that could have a significant impact on our business. These significant trends and regulations have not changed materially since such disclosure, except as follows:

Regulatory Update

Rate reviews are necessary to recover the cost of providing safe, reliable service, while contributing to earnings growth and achieving our financial objectives. We regularly review the need for electric and natural gas rate relief in each state in which we provide service.

Montana Rate Review Filing – On August 8, 2022, we filed a Montana electric and natural gas rate review with the MPSC requesting an annual increase to electric and natural gas utility rates. On September 28, 2022, the MPSC approved interim rates effective October 1, 2022, subject to refund.
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Subsequently, we modified our request through rebuttal testimony. On April 3, 2023, we filed a settlement agreement with certain parties, which is subject to approval by the MPSC. The details of our rebuttal request, interim rates granted, and the settlement agreement are set forth below:

Montana Rate Review ($ in millions)
Electric Natural Gas
Current ROE 9.65% 9.55%
Current Equity Ratio 49.38% 46.79%
Proposed Settlement ROE 9.65% 9.55%
Proposed Settlement Equity Ratio 48.02% 48.02%
Rebuttal Filing Forecasted 2022 Rate Base $2,842 $582
Requested Revenue Increase Through Rebuttal Testimony (in millions)
Electric Natural Gas
Base Rates $90.6 $22.4
PCCAM(1)
$69.7 n/a
Property Tax (tracker base adjustment)(1)
$14.5 $4.2
Total Revenue Increase Requested through Rebuttal Testimony $174.8 $26.6
Interim Revenue Increase Granted (in millions)
Electric Natural Gas
Base Rates $29.4 $1.7
PCCAM(1)
$61.1 n/a
Property Tax (tracker base adjustment)(1)(2)
$10.8 $2.9
Total Interim Revenue Granted $101.3 $4.6
Requested Revenue Increase Through Settlement Agreement (in millions)
Electric Natural Gas
Base Rates $67.4 $14.1
PCCAM(1)
$69.7 n/a
Property Tax (tracker base adjustment)(1)
$14.5 $4.2
Total Revenue Increase Requested Through Settlement Agreement $151.6 $18.3
(1) These items are flow-through costs. PCCAM reflects our fuel and purchased power costs.
(2) Our requested interim property tax base increases went into effect on January 1, 2023, as part of our 2023 property tax tracker filing.

The settlement includes, among other things, agreement on electric and natural gas base revenue increases, allocated cost of service, rate design, updates to the base amount of revenues associated with property taxes and electric supply costs, and regulatory policy issues related to requested changes in regulatory mechanisms.

The settlement agreement provides for an update to the PCCAM by adjusting the base costs from $138.7 million to $208.4 million and providing for more timely quarterly recovery of deferred balances instead of annual recovery. It also addresses the potential for future recovery of certain operating costs associated with the Yellowstone County Generating Station and provides for the deferral of incremental operating costs related to our Enhanced Wildfire Mitigation Plan. The settling parties agreed to terminate the pilot decoupling program (Fixed Cost Recovery Mechanism) and that the proposed business technology rider will not be implemented.

A hearing on the settlement agreement was held in April 2023, post-hearing briefing concluded in June 2023, and we expect a decision from the MPSC during the third quarter of 2023. Interim rates remain in effect on a refundable basis until the MPSC issues a final order.

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South Dakota Electric Rate Review Filing – On June 15, 2023, we filed a South Dakota electric rate review filing (2022 test year) under Docket EL23-016 for an annual increase to electric rates totaling approximately $30.9 million. Our request was based on a ROE of 10.7%, a capital structure including 50.5% equity, and rate base of $787.3 million.

Holding Company Filings – We filed a Restructuring Plan with the state commissions in Montana, South Dakota and Nebraska and the FERC. Currently, our utility businesses are held in the same legal entity. Under the Restructuring Plan, we proposed to legally separate our Montana public utility business from our South Dakota and Nebraska public utility business and establish a holding company to hold the ownership interests of all of the subsidiaries. The purpose of the reorganization is to segregate our organizational structure to be more transparent and in line with the public utility industry. The Restructuring Plan does not include substantive changes in how the state public utility commissions regulate those services. We have received all necessary regulatory approvals and we expect to effectuate the Restructuring Plan by early 2024.

Power Costs and Credits Adjustment Mechanism - The MPSC's September 2022 decision approving interim rates, which are subject to refund, included an increase to the PCCAM Base of $61.1 million, effective October 1, 2022. As of June 30, 2023, we have under-collected our total Montana electric supply costs for the July 2022 through June 2023 PCCAM year by approximately $18.5 million. Absent the interim rate PCCAM Base increase, as of June 30, 2023, our under-collected position would have been approximately $58.7 million. In the current PCCAM design, under-collections are not recovered from customers until the subsequent power cost adjustment year with a change in customer rates effective annually on October 1, which has adversely affected our cash flows and liquidity.

Under the PCCAM, net costs higher or lower than the PCCAM Base (excluding qualifying facility costs) are allocated 90% to Montana customers and 10% to shareholders. For the three and six months ended June 30, 2023, we over collected supply costs for the 2022 - 2023 PCCAM year of $18.9 million and $23.4 million, respectively, resulting in a reduction to our under collection of costs, and recorded an increase in pre-tax earnings of $2.1 million and $2.6 million, respectively (10% of the PCCAM Base cost variance). For the three and six months ended June 30, 2022, we under collected costs of $7.5 million and $14.6 million, respectively, resulting in an increase to the under collection of costs, and recorded a reduction in pre-tax earnings of $0.8 million and $1.6 million, respectively.

Our electric supply from owned and long-term contracted resources is not adequate to meet our peak-demand needs. Because of this, the volatility of market prices for energy on peak-demand days, even if only for a few days in duration, exposes us to potentially significant market purchases that could negatively impact our results of operations and cash flows. See the Electric Resource Planning - Montana section below for how we are working to address this market exposure.

Electric Resource Planning - Montana

Yellowstone County 175 MW plant - As previously reported, in October 2021, the Montana Environmental Information Center and the Sierra Club filed a lawsuit in Montana State Court, against the MDEQ and us, alleging that the environmental analysis conducted prior to issuance of the Yellowstone County Generating Station's air quality permit was inadequate. On April 4, 2023, the Montana District Court issued an order finding the MDEQ's environmental analysis was deficient in not addressing exterior lighting and greenhouse gases and remanded it back to MDEQ to address the deficiencies and vacated the air quality permit pending that remand. As a result of the vacatur of the permit, we paused construction. On June 8, 2023, the Montana District Court granted our motion to stay the order vacating the air quality permit pending the outcome of our notice of appeal with the Montana Supreme Court. We recommenced construction in June 2023 and expect the plant to be operational by the end of the third quarter 2024.

On May 10, 2023, Montana House Bill 971 was signed into law, preventing the MDEQ from considering climate impacts in its analysis of large projects such as coal mines and power plants, and on June 1, 2023, the MDEQ issued its supplemental air quality permit that contained the updated exterior lighting analysis, and the MDEQ indicated that no other analysis was necessary. The comment period concerning the MDEQ’s supplemental air quality permit ended on July 3, 2023. The current lawsuit, as well as additional potential legal challenges related to the Yellowstone County Generating Station, could delay the project timing and increase costs. Total costs of approximately $203.6 million have been incurred, with expected total costs of approximately $275.0 million.

Future Integrated Resource Planning - Resource adequacy in the Western third of the U.S. has been declining with the retirement of thermal power plants. Our owned and long-term contracted resources are inadequate to supply the necessary capacity we require to meet our peak-demand loads, which exposes us to large quantities of market purchases at typically high and volatile energy prices. To comply with regulatory resource planning requirements, we submitted an integrated resource plan to the MPSC on April 28, 2023.

We remain concerned regarding an overall lack of capacity in the West and our owned and long-term contracted capacity deficit to meet peak-demand loads. The construction of the Yellowstone County Generating Station and acquisition of Avista's Colstrip Units 3 and 4 interests are expected to reduce our exposure to market purchases.
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Proposed EPA Rules

In May 2023, the EPA proposed new GHG emissions standards for coal and natural gas-fired plants. In particular, the proposed rules would (i) strengthen the current New Source Performance Standards for newly built fossil fuel-fired stationary combustion turbines (generally natural gas-fired); (ii) establish emission guidelines for states to follow in limiting carbon pollution from existing fossil fuel-fired steam generating electric generating units (including coal, oil and natural gas-fired units); and (iii) establish emission guidelines for large, frequently used existing fossil fuel-fired stationary combustion turbines (generally natural gas-fired). In addition, in April 2023, EPA proposed to amend the MATS. Among other things, MATS currently sets stringent emission limits for acid gases, mercury, and other hazardous air pollutants from new and existing electric generating units. We are in compliance with existing MATS requirements. The proposed amendment of the MATS would strengthen the MATS requirements, and if adopted as written, both the GHG and MATS proposed rules could have a material negative impact on our coal-fired plants, including requiring potentially expensive upgrades or the early retirement of Colstrip Unit's 3 and 4 due to the rules making the facility uneconomic.

Previous efforts by the EPA were met with extensive litigation and we anticipate a similar response if the proposed rules are adopted. As MATS and GHG regulations are implemented, it could result in additional material compliance costs. We will continue working with federal and state regulatory authorities, other utilities, and stakeholders to seek relief from any MATS or GHG regulations that, in our view, disproportionately impact customers in our region.

RESULTS OF OPERATIONS

Our consolidated results include the results of our divisions and subsidiaries constituting each of our business segments. The overall consolidated discussion is followed by a detailed discussion of utility margin by segment.

Factors Affecting Results of Operations

Our revenues may fluctuate substantially with changes in supply costs, which are generally collected in rates from customers. In addition, various regulatory agencies approve the prices for electric and natural gas utility service within their respective jurisdictions and regulate our ability to recover costs from customers.

Revenues are also impacted by customer growth and usage, the latter of which is primarily affected by weather and the impact of energy efficiency initiatives and investment. Very cold winters increase demand for natural gas and to a lesser extent, electricity, while warmer than normal summers increase demand for electricity, especially among our residential and commercial customers. We measure this effect using degree-days, which is the difference between the average daily actual temperature and a baseline temperature of 65 degrees. Heating degree-days result when the average daily temperature is less than the baseline. Cooling degree-days result when the average daily temperature is greater than the baseline. The statistical weather information in our regulated segments represents a comparison of this data.

Fuel, purchased supply and direct transmission expenses are costs directly associated with the generation and procurement of electricity and natural gas. These costs are generally collected in rates from customers and may fluctuate substantially with market prices and customer usage.

Operating and maintenance expenses are costs associated with the ongoing operation of our vertically-integrated utility facilities which provide electric and natural gas utility products and services to our customers. Among the most significant of these costs are those associated with direct labor and supervision, repair and maintenance expenses, and contract services. These costs are normally fairly stable across broad volume ranges and therefore do not normally increase or decrease significantly in the short term with increases or decreases in volumes.


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OVERALL CONSOLIDATED RESULTS

Three Months Ended June 30, 2023 Compared with the Three Months Ended June 30, 2022

Consolidated net income for the three months ended June 30, 2023 was $19.1 million as compared with $29.8 million for the same period in 2022. This decrease was primarily due to lower electric and natural gas retail volumes, lower transmission revenues, higher operating and maintenance expense, higher administrative and general expense, higher depreciation and depletion expense, higher interest expense, and higher income tax expense, partly offset by higher Montana interim rates associated with our ongoing rate review, which are subject to refund, higher Montana property tax tracker collections, and lower non-recoverable Montana electric supply costs.

Consolidated gross margin for the three months ended June 30, 2023 was $75.5 million as compared with $79.6 million in 2022, a decrease of $4.1 million, or 5.2 percent. This decrease was primarily due to lower electric and natural gas retail volumes and lower transmission revenues, higher operating and maintenance expense, and higher depreciation and depletion expense, partly offset by higher Montana interim rates associated with our ongoing rate review, which are subject to refund, higher Montana property tax tracker collections, and lower non-recoverable Montana electric supply costs.
Electric Natural Gas Total
2023 2022 2023 2022 2023 2022
(in millions)
Reconciliation of gross margin to utility margin:
Operating Revenues $ 229.3  $ 243.4  $ 61.2  $ 79.6  $ 290.5  $ 323.0 
Less: Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below) 42.4  57.7  25.2  37.3  67.6  95.0 
Less: Operating and maintenance 41.4  40.8  13.5  12.5  54.9  53.3 
Less: Property and other taxes 31.0  36.4  9.1  10.5  40.1  46.9 
Less: Depreciation and depletion 43.3  40.2  9.1  8.0 52.4  48.2 
Gross Margin 71.2  68.3  4.3  11.3  75.5  79.6 
Operating and maintenance 41.4  40.8  13.5  12.5  54.9  53.3 
Property and other taxes 31.0  36.4  9.1  10.5  40.1  46.9 
Depreciation and depletion 43.3  40.2  9.1  8.0  52.4  48.2 
Utility Margin(1)
$ 186.9  $ 185.7  $ 36.0  $ 42.3  $ 222.9  $ 228.0 
(1) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above.

  Three Months Ended June 30,
  2023 2022 Change % Change
  (dollars in millions)
Utility Margin        
Electric $ 186.9  $ 185.7  $ 1.2  0.6  %
Natural Gas 36.0  42.3  (6.3) (14.9)
Total Utility Margin(1)
$ 222.9  $ 228.0  $ (5.1) (2.2) %
(1) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above.

Consolidated utility margin for the three months ended June 30, 2023 was $222.9 million as compared with $228.0 million for the same period in 2022, a decrease of $5.1 million, or 2.2 percent.

Primary components of the change in utility margin include the following (in millions):
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  Utility Margin 2023 vs. 2022
Utility Margin Items Impacting Net Income
Montana interim rates (subject to refund) $ 7.1 
Montana property tax tracker collections 3.3 
Lower non-recoverable Montana electric supply costs due to higher electric supply revenues and lower electric supply costs 3.0 
Higher Montana natural gas transportation 0.4 
Lower natural gas retail volumes (5.3)
Lower electric retail volumes (3.5)
Lower transmission revenue due to market conditions and lower rates (1.7)
Other (0.4)
Change in Utility Margin Items Impacting Net Income $ 2.9 
Utility Margin Items Offset Within Net Income
Lower property taxes recovered in revenue, offset in property and other taxes (7.2)
Lower operating expenses recovered in revenue, offset in operating and maintenance expense (1.4)
Lower natural gas production taxes recovered in revenue, offset in property and other taxes (0.4)
Higher revenue from lower production tax credits, offset in income tax expense 1.0 
Change in Utility Margin Items Offset Within Net Income (8.0)
Decrease in Consolidated Utility Margin(1)
$ (5.1)
(1) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above.

Lower electric retail volumes were driven by unfavorable weather in Montana impacting residential demand and lower commercial demand, partly offset by customer growth and favorable weather in South Dakota. Lower natural gas retail volumes were driven by unfavorable weather in Montana, partly offset by customer growth. Interim rates in our Montana rate review were effective October 1, 2022, and are subject to refund, pending an outcome in the proceeding.

  Three Months Ended June 30,
  2023 2022 Change % Change
  (dollars in millions)
Operating Expenses (excluding fuel, purchased supply and direct transmission expense)        
Operating and maintenance $ 54.8  $ 53.3  $ 1.5  2.8  %
Administrative and general 30.0  27.2  2.8  10.3 
Property and other taxes 40.1  46.9  (6.8) (14.5)
Depreciation and depletion 52.4  48.2  4.2  8.7 
Total Operating Expenses (excluding fuel, purchased supply and direct transmission expense) $ 177.3  $ 175.6  $ 1.7  1.0  %
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Consolidated operating expenses, excluding fuel, purchased supply and direct transmission expense, were $177.3 million for the three months ended June 30, 2023, as compared with $175.6 million for the three months ended June 30, 2022. Primary components of the change include the following (in millions):
  Operating Expenses
  2023 vs. 2022
Operating Expenses (excluding fuel, purchased supply and direct transmission expense) Impacting Net Income
Higher labor and benefits(1)
$ 4.4 
Higher depreciation expense due to plant additions 4.2 
Higher other state and local tax expense 0.9 
Increase in uncollectible accounts 0.8 
Higher insurance expense 0.4 
Lower expenses at our electric generation facilities (0.2)
Other 1.8 
Change in Items Impacting Net Income 12.3 
Operating Expenses Offset Within Net Income
Lower property taxes recovered in trackers, offset in revenue (7.2)
Lower pension and other postretirement benefits, offset in other income(1)
(1.7)
Lower operating and maintenance expenses recovered in trackers, offset in revenue (1.4)
Lower natural gas production taxes recovered in trackers, offset in revenue (0.4)
Higher non-employee directors deferred compensation recorded within administrative and general expense, offset in other income 0.1 
Change in Items Offset Within Net Income (10.6)
Increase in Operating Expenses (excluding fuel, purchased supply and direct transmission expense) $ 1.7 
(1) In order to present the total change in labor and benefits, we have included the change in the non-service cost component of our pension and other postretirement benefits, which is recorded within other income on our Condensed Consolidated Statements of Income. This change is offset within this table as it does not affect our operating expenses.

We estimate property taxes throughout each year, and update those estimates based on valuation reports received from the Montana Department of Revenue. Under Montana law, we are allowed to track the increases and decreases in the actual level of state and local taxes and fees and adjust our rates to recover the increase or decrease between rate cases less the amount allocated to FERC-jurisdictional customers and net of the associated income tax benefit.

Consolidated operating income for the three months ended June 30, 2023 was $45.6 million as compared with $52.3 million in the same period of 2022. This decrease was primarily driven by lower electric and natural gas retail volumes, lower transmission revenues, higher operating and maintenance expense, higher administrative and general expense, and higher depreciation and depletion expense, partly offset by higher Montana interim rates associated with our ongoing rate review, which are subject to refund, higher Montana property tax tracker collections, and lower non-recoverable Montana electric supply costs.

Consolidated interest expense was $28.4 million for the three months ended June 30, 2023 as compared with $24.0 million for the same period of 2022. This increase was due to higher borrowings and interest rates, partly offset by higher capitalization of Allowance for Funds Used During Construction (AFUDC).

Consolidated other income was $4.1 million for the three months ended June 30, 2023 as compared with $2.9 million for the same period of 2022. This increase was primarily due to the prior year CREP penalty, partly offset by an increase in the non-service component of pension expense.

Consolidated income tax expense was $2.1 million for the three months ended June 30, 2023 as compared to $1.4 million for the same period of 2022. Our effective tax rate for the three months ended June 30, 2023 was 10.1% as compared with 4.6% for the same period in 2022.
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The following table summarizes the differences between our effective tax rate and the federal statutory rate (in millions):
  Three Months Ended June 30,
2023 2022
Income Before Income Taxes $ 21.3  $ 31.2 
Income tax calculated at federal statutory rate 4.5  21.0  % 6.6  21.0  %
Permanent or flow-through adjustments:
State income tax, net of federal provisions 0.3  1.3  0.4  1.4 
Flow-through repairs deductions (1.7) (8.0) (3.3) (10.6)
Production tax credits (1.1) (5.4) (2.6) (8.2)
Amortization of excess deferred income tax (0.2) (1.1) (0.2) (0.5)
Plant and depreciation flow-through items 0.2  0.9  0.4  1.3 
Other, net 0.1  1.4  0.1  0.2 
(2.4) (10.9) (5.2) (16.4)
Income tax expense $ 2.1  10.1  % $ 1.4  4.6  %

We compute income tax expense for each quarter based on the estimated annual effective tax rate for the year, adjusted for certain discrete items. Our effective tax rate typically differs from the federal statutory tax rate primarily due to the regulatory impact of flowing through federal and state tax benefits of repairs deductions, state tax benefit of accelerated tax depreciation deductions (including bonus depreciation when applicable) and production tax credits.


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Six Months Ended June 30, 2023 Compared with the Six Months Ended June 30, 2022

Consolidated net income for the six months ended June 30, 2023 was $81.7 million as compared with $88.9 million for the same period in 2022. This decrease was primarily due to lower natural gas retail volumes, higher depreciation and depletion, higher operating and maintenance expense, higher administrative and general expense, higher interest expense, and higher income tax expense, including a one-time charge for the reduction of previously claimed alternative minimum tax credits, partly offset by Montana interim rates associated with our ongoing rate review, which are subject to refund, higher electric retail volumes, lower non-recoverable Montana electric supply costs, and higher Montana property tax tracker collections.
Consolidated gross margin for the six months ended June 30, 2023 was $206.4 million as compared with $190.3 million in 2022, an increase of $16.1 million, or 8.5 percent. This increase was primarily due to Montana interim rates associated with our ongoing rate review, which are subject to refund, higher electric retail volumes, lower non-recoverable Montana electric supply costs, and higher Montana property tax tracker collections, partly offset by lower natural gas retail volumes, higher depreciation and depletion, and higher operating and maintenance expense.

Electric Natural Gas Total
2023 2022 2023 2022 2023 2022
(in millions)
Reconciliation of gross margin to utility margin:
Operating Revenues $ 524.6  $ 515.1  $ 220.5  $ 202.3  $ 745.1  $ 717.4 
Less: Fuel, purchased supply and direct transmission expense (exclusive of depreciation and depletion shown separately below) 120.5  135.3  112.6  94.8  233.1  230.1 
Less: Operating and maintenance 83.8  80.3  26.9  25.8  110.7  106.1 
Less: Property and other taxes 69.3  72.9  20.0  20.9  89.3  93.8 
Less: Depreciation and depletion 87.2  80.6  18.4  16.5 105.6  97.1 
Gross Margin 163.8  146.0  42.6  44.3  206.4  190.3 
Operating and maintenance 83.8  80.3  26.9  25.8  110.7  106.1 
Property and other taxes 69.3  72.9  20.0  20.9  89.3  93.8 
Depreciation and depletion 87.2  80.6  18.4  16.5  105.6  97.1 
Utility Margin(1)
$ 404.1  $ 379.8  $ 107.9  $ 107.5  $ 512.0  $ 487.3 
(1) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above.

  Six Months Ended June 30,
  2023 2022 Change % Change
  (dollars in millions)
Utility Margin        
Electric $ 404.1  $ 379.8  $ 24.3  6.4  %
Natural Gas 107.9  107.5  0.4  0.4 
Total Utility Margin(1)
$ 512.0  $ 487.3  $ 24.7  5.1  %
(1) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above.

Consolidated utility margin for the six months ended June 30, 2023 was $512.0 million as compared with $487.3 million for the same period in 2022, an increase of $24.7 million, or 5.1 percent.

Primary components of the change in utility margin include the following (in millions):
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Utility Margin 2023 vs. 2022
Utility Margin Items Impacting Net Income
Montana interim rates (subject to refund) $ 15.6 
Higher electric retail volumes 6.3 
Lower non-recoverable Montana electric supply costs due to higher electric supply revenues and lower electric supply costs
4.3 
Montana property tax tracker collections 3.5 
Higher Montana natural gas transportation 1.5 
Lower natural gas retail volumes (1.6)
Lower transmission revenue due to market conditions and lower rates (0.5)
Other (0.3)
Change in Utility Margin Items Impacting Net Income 28.8 
Utility Margin Items Offset Within Net Income
Lower property taxes recovered in revenue, offset in property and other taxes (4.6)
Lower operating expenses recovered in revenue, offset in operating and maintenance expense (1.7)
Lower natural gas production taxes recovered in revenue, offset in property and other taxes (0.5)
Higher revenue from lower production tax credits, offset in income tax expense 2.7 
Change in Utility Margin Items Offset Within Net Income (4.1)
Increase in Consolidated Utility Margin(1)
$ 24.7 
(1) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above.

Higher electric retail volumes were driven by customer growth and increased residential demand as compared to the prior year. Lower natural gas retail volumes were driven by overall unfavorable weather in Montana, partly offset by favorable weather in South Dakota and Nebraska and customer growth. Interim rates in our Montana rate review were effective October 1, 2022, and are subject to refund pending an outcome in the proceeding.

  Six Months Ended June 30,
  2023 2022 Change % Change
  (dollars in millions)
Operating Expenses (excluding fuel, purchased supply and direct transmission expense)        
Operating and maintenance $ 110.7  $ 106.1  $ 4.6  4.3  %
Administrative and general 64.7  58.9  5.8  9.8 
Property and other taxes 89.3  93.7  (4.4) (4.7)
Depreciation and depletion 105.6  97.1  8.5  8.8 
Total Operating Expenses (excluding fuel, purchased supply and direct transmission expense) $ 370.3  $ 355.8  $ 14.5  4.1  %
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Consolidated operating expenses, excluding fuel, purchased supply and direct transmission expense, were $370.3 million for the six months ended June 30, 2023, as compared with $355.8 million for the six months ended June 30, 2022. Primary components of the change include the following (in millions):
  Operating Expenses
  2023 vs. 2022
Operating Expenses (excluding fuel, purchased supply and direct transmission expense) Impacting Net Income
Higher depreciation expense due to plant additions $ 8.5 
Higher labor and benefits(1)
7.5 
Higher expenses at our electric generation facilities 3.2 
Increase in uncollectible accounts 1.1 
Higher insurance expense 1.0 
Higher other state and local tax expense 0.7 
Lower technology implementation and maintenance expenses (0.4)
Other 1.4 
Change in Items Impacting Net Income 23.0 
Operating Expenses Offset Within Net Income
Lower property taxes recovered in trackers, offset in revenue (4.6)
Lower operating and maintenance expenses recovered in trackers, offset in revenue (1.7)
Lower pension and other postretirement benefits, offset in other income(1)
(1.5)
Lower natural gas production taxes recovered in trackers, offset in revenue (0.5)
Lower non-employee directors deferred compensation recorded within administrative and general expense, offset in other income (0.2)
Change in Items Offset Within Net Income (8.5)
Increase in Operating Expenses (excluding fuel, purchased supply and direct transmission expense) $ 14.5 
(1) In order to present the total change in labor and benefits, we have included the change in the non-service cost component of our pension and other postretirement benefits, which is recorded within other income on our Condensed Consolidated Statements of Income. This change is offset within this table as it does not affect our operating expenses.

Consolidated operating income for the six months ended June 30, 2023 was $141.7 million as compared with $131.6 million in the same period of 2022. This increase was primarily driven by Montana interim rates associated with our ongoing rate review, which are subject to refund, higher electric retail volumes, lower non-recoverable Montana electric supply costs, and higher Montana property tax tracker collections, partly offset by lower natural gas retail volumes, higher depreciation and depletion expense, higher operating and maintenance expense, and higher administrative and general expenses.

Consolidated interest expense was $56.4 million for the six months ended June 30, 2023 as compared with $47.7 million for the same period of 2022. This increase was due to higher borrowings and interest rates, partly offset by higher capitalization of AFUDC.

Consolidated other income was $8.8 million for the six months ended June 30, 2023 as compared to $7.6 million during the same period of 2022. This increase was primarily due to the prior year CREP penalty, partly offset by an increase in the non-service component of pension expense.

Consolidated income tax expense for the six months ended June 30, 2023 was $12.4 million as compared to $2.5 million in the same period of 2022. Our effective tax rate for the six months ended June 30, 2023 was 13.2% as compared with 2.8% for the same period in 2022. Income tax expense for the six months ended June 30, 2023 includes a one-time $3.2 million charge for the reduction of previously claimed alternative minimum tax credits.

The following table summarizes the differences between our effective tax rate and the federal statutory rate (in millions):
37


  Six Months Ended June 30,
2023 2022
Income Before Income Taxes $ 94.0  $ 91.4 
Income tax calculated at federal statutory rate 19.7  21.0  % 19.2  21.0  %
Permanent or flow-through adjustments:
State income tax, net of federal provisions 1.2  1.3  0.8  0.9 
Flow-through repairs deductions (7.6) (8.0) (10.1) (11.1)
Production tax credits (4.3) (4.6) (6.4) (7.0)
Amortization of excess deferred income tax (1.0) (1.1) (0.6) (0.6)
Reduction to previously claimed alternative minimum tax credit 3.2  3.4  —  — 
Plant and depreciation flow-through items 0.9  0.9  0.1  0.2 
Share-based compensation 0.4  0.4  (0.3) (0.3)
Other, net (0.1) (0.1) (0.2) (0.3)
(7.3) (7.8) (16.7) (18.2)
Income tax expense $ 12.4  13.2  % $ 2.5  2.8  %

We compute income tax expense for each quarter based on the estimated annual effective tax rate for the year, adjusted for certain discrete items. Our effective tax rate typically differs from the federal statutory tax rate primarily due to the regulatory impact of flowing through federal and state tax benefits of repairs deductions, state tax benefit of accelerated tax depreciation deductions (including bonus depreciation when applicable) and production tax credits.


38


ELECTRIC SEGMENT

We have various classifications of electric revenues, defined as follows:

•Retail: Sales of electricity to residential, commercial and industrial customers, and the impact of regulatory
mechanisms.
•Regulatory amortization: Primarily represents timing differences for electric supply costs and property taxes between when we incur these costs and when we recover these costs in rates from our customers, which is also reflected in fuel, purchased supply and direct transmission expense and therefore has minimal impact on utility margin. The amortization of these amounts are offset in retail revenue.
•Transmission: Reflects transmission revenues regulated by the FERC.
•Wholesale and other are largely utility margin neutral as they are offset by changes in fuel, purchased supply and direct transmission expense.

Three Months Ended June 30, 2023 Compared with the Three Months Ended June 30, 2022
  Revenues Change Megawatt Hours (MWH) Avg. Customer Counts
  2023 2022 $ % 2023 2022 2023 2022
  (in thousands)    
Montana $ 83,840  $ 70,715  $ 13,125  18.6  % 568  590  321,820  316,180 
South Dakota 15,686  15,593  93  0.6  135  123  51,162  50,925 
Residential  99,526  86,308  13,218  15.3  703  713  372,982  367,105 
Montana 101,919  84,327  17,592  20.9  759  772  74,234  72,826 
South Dakota 25,134  26,445  (1,311) (5.0) 266  261  12,985  12,882 
Commercial 127,053  110,772  16,281  14.7  1,025  1,033  87,219  85,708 
Industrial 10,722  8,988  1,734  19.3  644  608  78  76 
Other 8,732  8,311  421  5.1  33  42  6,388  6,415 
Total Retail Electric $ 246,033  $ 214,379  $ 31,654  14.8  % 2,405  2,396  466,667  459,304 
Regulatory amortization (36,254) 7,741  (43,995) (568.3)
Transmission 18,352  20,005  (1,653) (8.3)
Wholesale and Other 1,135  1,293  (158) (12.2)
Total Revenues $ 229,266  $ 243,418  $ (14,152) (5.8) %
Fuel, purchased supply and direct transmission expense(1)
42,363  57,695  (15,332) (26.6)
Utility Margin(2)
$ 186,903  $ 185,723  $ 1,180  0.6  %
(1) Exclusive of depreciation and depletion.
(2) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above. Also see "Overall Consolidated Results" above for reconciliation of gross margin to utility margin.

  Cooling Degree Days 2023 as compared with:
2023 2022 Historic Average 2022 Historic Average
Montana 44 40 64 10% warmer 31% cooler
South Dakota 201 66 72 205% warmer 179% warmer
  Heating Degree Days 2023 as compared with:
2023 2022 Historic Average 2022 Historic Average
Montana(1)
1,017 1,402 1,156 27% warmer 12% warmer
South Dakota 1,613 1,593 1,484 1% colder 9% colder
(1) Montana electric and natural gas heating degree days may differ due to differences in service territory.
39



The following summarizes the components of the changes in electric utility margin for the three months ended June 30, 2023 and 2022 (in millions):
  Utility Margin 2023 vs. 2022
Utility Margin Items Impacting Net Income
Montana interim rates (subject to refund) $ 6.7 
Lower non-recoverable Montana electric supply costs due to higher electric supply revenues and lower electric supply costs 3.0 
Montana property tax tracker collections 2.3 
Lower retail volumes (3.5)
Lower transmission revenue due to market conditions and lower rates (1.7)
Qualifying facility (QF) liability adjustment (0.1)
Other (0.1)
Change in Utility Margin Items Impacting Net Income 6.6 
Utility Margin Items Offset Within Net Income
Lower property taxes recovered in revenue, offset in property and other taxes (5.0)
Lower operating expenses recovered in revenue, offset in operating and maintenance expense (1.4)
Higher revenue from lower production tax credits, offset in income tax expense 1.0 
Change in Utility Margin Items Offset Within Net Income (5.4)
Increase in Utility Margin(1)
$ 1.2 
(1) Non-GAAP financial measure. See "Non-GAAP Financial Measure" above. Also see "Overall Consolidated Results" above for reconciliation of gross margin to utility margin.

Lower retail volumes were driven by unfavorable weather in Montana impacting residential demand and lower commercial demand, partly offset by customer growth and favorable weather in South Dakota.

The adjustment to our electric QF liability (unrecoverable costs associated with contracts covered by the Public Utility Regulatory Policies Act of 1978 (PURPA) as part of a 2002 stipulation with the MPSC and other parties) reflects a $5.0 million gain in 2023, as compared with a $5.1 million gain for the same period in 2022, due to the combination of:

•A $0.8 million favorable reduction in costs for the current contract year to record the annual adjustment for actual output and pricing as compared with a $1.8 million favorable reduction in costs in the prior period; and
•A favorable adjustment, decreasing the QF liability by $4.2 million, reflecting annual actual contract price escalation for the 2023-2024 contract year, which was less than previously estimated. The 2023-2024 contract year is the last year of the contract that contains variable pricing terms. This is compared to a favorable adjustment of $3.3 million in the prior year due to less than previously estimated actual price escalation.

The change in regulatory amortization revenue is due to timing differences between when we incur electric supply costs and when we recover these costs in rates from our customers, which has a minimal impact on utility margin. Our wholesale and other revenues are largely utility margin neutral as they are offset by changes in fuel, purchased supply and direct transmission expenses.


40




Six Months Ended June 30, 2023 Compared with the Six Months Ended June 30, 2022
  Revenues Change Megawatt Hours (MWH) Avg. Customer Counts
  2023 2022 $ % 2023 2022 2023 2022
  (in thousands)    
Montana $ 209,302  $ 167,668  $ 41,634  24.8  % 1,439  1,415  321,278  315,811 
South Dakota 35,457  36,023  (566) (1.6) 330  312  51,218  50,964 
Residential  244,759  203,691  41,068  20.2  1,769  1,727  372,496  366,775 
Montana 214,532  170,861  43,671  25.6  1,610  1,581  74,249  72,722 
South Dakota 50,262  54,079  (3,817) (7.1) 545  552  12,964  12,848 
Commercial 264,794  224,940  39,854  17.7  2,155  2,133  87,213  85,570 
Industrial 22,563  18,642  3,921  21.0  1,270  1,236  79  76 
Other 13,986  12,784  1,202  9.4  48  57  5,623  5,599 
Total Retail Electric $ 546,102  $ 460,057  $ 86,045  18.7  % 5,242  5,153  465,411  458,020 
Regulatory amortization (61,551) 14,281  (75,832) (531.0)
Transmission 37,245  37,695  (450) (1.2)
Wholesale and Other 2,778  3,112  (334) (10.7)
Total Revenues $ 524,574  $ 515,145  $ 9,429  1.8  %
Fuel, purchased supply and direct transmission expense(1)
120,497  135,318  (14,821) (11.0)
Utility Margin(2)
$ 404,077  $ 379,827  $ 24,250  6.4  %
(1) Exclusive of depreciation and depletion.
(2) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above. Also see "Overall Consolidated Results" above for reconciliation of gross margin to utility margin.

  Cooling Degree Days 2023 as compared with:
2023 2022 Historic Average 2022 Historic Average
Montana(1)
44 40 64 10% warmer 31% cooler
South Dakota 201 66 74 205% warmer 172% warmer
  Heating Degree Days 2023 as compared with:
2023 2022 Historic Average 2022 Historic Average
Montana(1)
4,556 4,638 4,454 2% warmer 2% colder
South Dakota 5,957 5,688 5,603 5% colder 6% colder
(1) Montana electric and natural gas heating degree days may differ due to differences in service territory.
41


The following summarizes the components of the changes in electric utility margin for the six months ended June 30, 2023 and 2022 (in millions):
  Utility Margin 2023 vs. 2022
Utility Margin Items Impacting Net Income
Montana interim rates (subject to refund) $ 15.1 
Higher retail volumes 6.3 
Lower non-recoverable Montana electric supply costs due to higher electric supply revenues and lower electric supply costs 4.3 
Montana property tax tracker collections 2.5 
Lower transmission revenue due to market conditions and lower rates (0.5)
QF liability adjustment (0.1)
Other (0.3)
Change in Utility Margin Items Impacting Net Income 27.3 
Utility Margin Items Offset Within Net Income
Lower property taxes recovered in revenue, offset in property and other taxes (4.0)
Lower operating expenses recovered in revenue, offset in operating and maintenance expense (1.7)
Higher revenue from lower production tax credits, offset in income tax expense 2.7 
Change in Utility Margin Items Offset Within Net Income (3.0)
Increase in Utility Margin(1)
$ 24.3 
(1) Non-GAAP financial measure. See "Non-GAAP Financial Measure" above. Also see "Overall Consolidated Results" above for reconciliation of gross margin to utility margin.

Higher retail volumes were driven by customer growth and increased residential demand as compared to the prior year.

The adjustment to our electric QF liability (unrecoverable costs associated with PURPA contracts as part of a 2002 stipulation with the MPSC and other parties) reflects a $5.0 million gain in 2023, as compared with a $5.1 million gain for the same period in 2022, as further explained above in electric utility results for the three months ended June 30, 2023.

The change in regulatory amortization revenue is due to timing differences between when we incur electric supply costs and when we recover these costs in rates from our customers, which has a minimal impact on utility margin. Our wholesale and other revenues are largely utility margin neutral as they are offset by changes in fuel, purchased supply and direct transmission expenses.

42



NATURAL GAS SEGMENT

We have various classifications of natural gas revenues, defined as follows:

•Retail: Sales of natural gas to residential, commercial and industrial customers, and the impact of regulatory mechanisms.
•Regulatory amortization: Primarily represents timing differences for natural gas supply costs and property taxes between when we incur these costs and when we recover these costs in rates from our customers, which is also reflected in fuel, purchased supply and direct transmission expenses and therefore has minimal impact on utility margin. The amortization of these amounts are offset in retail revenue.
•Wholesale: Primarily represents transportation and storage for others.

Three Months Ended June 30, 2023 Compared with the Three Months Ended June 30, 2022
  Revenues Change Dekatherms (Dkt) Avg. Customer Counts
  2023 2022 $ % 2023 2022 2023 2022
  (in thousands)    
Montana $ 17,589  $ 28,596  $ (11,007) (38.5) % 1,864  2,701  183,669  181,694 
South Dakota 8,375  9,408  (1,033) (11.0) 703  715  41,914  41,355 
Nebraska 7,457  7,357  100  1.4  508  524  37,711  37,569 
Residential 33,421  45,361  (11,940) (26.3) 3,075  3,940  263,294  260,618 
Montana 9,918  14,697  (4,779) (32.5) 1,147  1,464  25,714  25,309 
South Dakota 5,505  6,425  (920) (14.3) 675  663  7,217  7,021 
Nebraska 4,665  4,456  209  4.7  387  386  5,004  4,977 
Commercial 20,088  25,578  (5,490) (21.5) 2,209  2,513  37,935  37,307 
Industrial 160  222  (62) (27.9) 19  21  232  233 
Other 326  469  (143) (30.5) 43  57  188  177 
Total Retail Gas $ 53,995  $ 71,630  $ (17,635) (24.6) % 5,346  6,531  301,649  298,335 
Regulatory amortization (3,369) (1,204) (2,165) (179.8)
Wholesale and other 10,610  9,160  1,450  15.8 
Total Revenues $ 61,236  $ 79,586  $ (18,350) (23.1) %
Fuel, purchased supply and direct transmission expense(1)
25,215  37,305  (12,090) (32.4)
Utility Margin(2)
$ 36,021  $ 42,281  $ (6,260) (14.8) %
(1) Exclusive of depreciation and depletion.
(2) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above. Also see "Overall Consolidated Results" above for reconciliation of gross margin to utility margin.

  Heating Degree Days 2023 as compared with:
2023 2022 Historic Average 2022 Historic Average
Montana(1)
1,037 1,463 1,176 29% warmer 12% warmer
South Dakota 1,613 1,593 1,484 1% colder 9% colder
Nebraska 1,142 1,152 1,133 1% warmer 1% colder
(1) Montana electric and natural gas heating degree days may differ due to differences in service territory.

43


The following summarizes the components of the changes in natural gas utility margin for the three months ended June 30, 2023 and 2022:
  Utility Margin 2023 vs. 2022
  (in millions)
Utility Margin Items Impacting Net Income
Lower retail volumes $ (5.3)
Montana property tax tracker collections 1.0 
Higher Montana natural gas transportation 0.4 
Montana interim rates (subject to refund) 0.4 
Other (0.2)
Change in Utility Margin Items Impacting Net Income (3.7)
Utility Margin Items Offset Within Net Income
Lower property taxes recovered in revenue, offset in property and other taxes (2.2)
Lower gas production taxes recovered in revenue, offset in property and other taxes (0.4)
Change in Utility Margin Items Offset Within Net Income (2.6)
Decrease in Utility Margin(1)
$ (6.3)
(1) Non-GAAP financial measure. See "Non-GAAP Financial Measure" above. Also see "Overall Consolidated Results" above for reconciliation of gross margin to utility margin.

Lower retail volumes were driven by unfavorable weather in Montana, partly offset by customer growth.


44


Six Months Ended June 30, 2023 Compared with the Six Months Ended June 30, 2022
  Revenues Change Dekatherms (Dkt) Avg. Customer Counts
  2023 2022 $ % 2023 2022 2023 2022
  (in thousands)    
Montana $ 84,471  $ 80,895  $ 3,576  4.4  % 8,381  8,740  183,583  181,579 
South Dakota 28,310  29,325  (1,015) (3.5) 2,455  2,464  42,032  41,463 
Nebraska 27,970  22,799  5,171  22.7  1,915  1,822  37,838  37,690 
Residential 140,751  133,019  7,732  5.8  12,751  13,026  263,453  260,732 
Montana 46,257  41,747  4,510  10.8  4,834  4,723  25,690  25,286 
South Dakota 19,791  20,950  (1,159) (5.5) 2,177  2,153  7,235  7,035 
Nebraska 17,828  13,683  4,145  30.3  1,386  1,266  5,040  5,008 
Commercial 83,876  76,380  7,496  9.8  8,397  8,142  37,965  37,329 
Industrial 889  773  116  15.0  94  88  232  232 
Other 1,122  1,160  (38) (3.3) 136  151  188  176 
Total Retail Gas $ 226,638  $ 211,332  $ 15,306  7.2  % 21,378  21,407  301,838  298,469 
Regulatory amortization (28,770) (27,774) (996) 3.6 
Wholesale and other 22,602  18,783  3,819  20.3 
Total Revenues $ 220,470  $ 202,341  $ 18,129  9.0  %
Fuel, purchased supply and direct transmission expense(1)
112,573  94,756  17,817  18.8 
Utility Margin(2)
$ 107,897  $ 107,585  $ 312  0.3  %
(1) Exclusive of depreciation and depletion.
(2) Non-GAAP financial measure. See “Non-GAAP Financial Measure” above. Also see "Overall Consolidated Results" above for reconciliation of gross margin to utility margin.

  Heating Degree Days 2023 as compared with:
2023 2022 Historic Average 2022 Historic Average
Montana(1)
4,629 4,746 4,484 2% warmer 3% colder
South Dakota 5,957 5,688 5,603 5% colder 6% colder
Nebraska 4,506 4,230 4,427 7% colder 2% colder
(1) Montana electric and natural gas heating degree days may differ due to differences in service territory.

45


The following summarizes the components of the changes in natural gas utility margin for the six months ended June 30, 2023 and 2022:
  Utility Margin 2023 vs. 2022
  (in millions)
Utility Margin Items Impacting Net Income
Higher Montana natural gas transportation $ 1.5 
Montana property tax tracker collections 1.0 
Montana interim rates (subject to refund) 0.5 
Lower retail volumes (1.6)
Change in Utility Margin Items Impacting Net Income 1.4 
Utility Margin Items Offset Within Net Income
Lower gas production taxes recovered in revenue, offset in property and other taxes (0.5)
Higher property taxes recovered in revenue, offset in property tax expense (0.6)
Change in Utility Margin Items Offset Within Net Income (1.1)
Increase in Utility Margin(1)
$ 0.3 
(1) Non-GAAP financial measure. See "Non-GAAP Financial Measure" above. Also see "Overall Consolidated Results" above for reconciliation of gross margin to utility margin.

Lower retail volumes were driven by overall unfavorable weather in Montana impacting residential volumes, partly offset by favorable weather in South Dakota and Nebraska and customer growth.


46


LIQUIDITY AND CAPITAL RESOURCES

Liquidity

We require liquidity to support and grow our business, and use our liquidity for working capital needs, capital expenditures, investments in or acquisitions of assets, and to repay debt. We believe our cash flows from operations, existing borrowing capacity, debt and equity issuances and future utility rate increases should be sufficient to fund our operations, service existing debt, pay dividends, and fund capital expenditures. We plan to maintain a 50 - 55 percent debt to total capital ratio excluding finance leases, and expect to continue targeting a long-term dividend payout ratio of 60 - 70 percent of earnings per share; however, there can be no assurance that we will be able to meet these targets.

As of June 30, 2023, our total net liquidity was approximately $366.8 million, including $7.8 million of cash and $359.0 million of revolving credit facility availability with no letters of credit outstanding.

Cash Flows

The following table summarizes our consolidated cash flows (in millions):
  Six Months Ended June 30,
  2023 2022
Operating Activities    
Net income $ 81.7  $ 88.9 
Non-cash adjustments to net income 95.3  93.6 
Changes in working capital 124.3  52.8 
Other noncurrent assets and liabilities (7.2) (2.5)
Cash Provided by Operating Activities 294.1  232.8 
Investing Activities    
Property, plant and equipment additions (263.4) (234.4)
Investment in equity securities (2.4) (0.9)
Cash Used in Investing Activities (265.8) (235.3)
Financing Activities    
Proceeds from issuance of common stock, net of issuance costs 10.8  99.9 
Issuance of long-term debt 300.0  — 
Line of credit repayments, net (259.0) (21.0)
Dividends on common stock (76.1) (67.8)
Other financing activities, net (2.5) (1.3)
Cash (Used in) Provided by Financing Activities (26.8) 9.8 
Increase in Cash, Cash Equivalents, and Restricted Cash 1.5  7.3 
Cash, Cash Equivalents, and Restricted Cash, beginning of period 22.5  18.8 
Cash, Cash Equivalents, and Restricted Cash, end of period $ 24.0  $ 26.1 

Operating Activities

As of June 30, 2023, cash, cash equivalents, and restricted cash were $24.0 million as compared with $22.5 million as of December 31, 2022 and $26.1 million as of June 30, 2022. Cash provided by operating activities totaled $294.1 million for the six months ended June 30, 2023 as compared with $232.8 million during the six months ended June 30, 2022. As shown in the table below, this increase in operating cash flows is primarily due to a $62.1 million improvement in collections of energy supply costs and interim rates in our Montana rate review, partly offset by lower net income.

47


Uncollected energy supply costs (in millions)
Beginning of period End of period Net cash inflows
2022 $ 99.1  $ 75.8  $ 23.3 
2023 $ 115.4  $ 30.0  $ 85.4 
Improvement in net cash inflows $ 62.1 

As of June 30, 2023, our remaining uncollected energy supply cost balance related to the July 2021 - June 2022 PCCAM period is approximately $13.5 million. In addition, we have approximately $18.5 million of uncollected energy supply costs related to the July 2022 - June 2023 PCCAM period that we expect to begin to collect in October 2023. On September 28, 2022, the MPSC approved our request for interim rates, which are subject to refund, including a $61.1 million increase to the PCCAM Base, which became effective in customer rates on October 1, 2022. Our under-collected position for the July 2022 - June 2023 PCCAM period improved $40.2 million due to the interim rate approved PCCAM Base increase.

If the settlement agreement is approved as submitted, we anticipate continued improvements in our cash flows from operations. However, unfavorable results in our Montana rate review, and continued higher overall market prices, which could be further exacerbated by extreme weather events, could create additional costs with deferred recovery that would offset these anticipated cash flow improvements.

Investing Activities

Cash used in investing activities totaled $265.8 million during the six months ended June 30, 2023, as compared with $235.3 million during the six months ended June 30, 2022. Plant additions during the first six months of 2023 include maintenance additions of approximately $142.2 million and capacity related capital expenditures of $121.2 million. Plant additions during the first six months of 2022 included maintenance additions of approximately $135.4 million and capacity related capital expenditures of approximately $99.0 million.

Financing Activities

Cash used in financing activities totaled $26.8 million during the six months ended June 30, 2023 as compared with cash provided by financing activities of $9.8 million during the six months ended June 30, 2022. During the six months ended June 30, 2023, cash used in financing activities reflects net repayments under our revolving lines of credit of $259.0 million and payment of dividends of $76.1 million, offset in part by net proceeds from the issuance of debt of $300.0 million and proceeds received from the issuance of common stock of $10.8 million. During the six months ended June 30, 2022, cash provided by financing activities reflects proceeds received from the issuance of common stock of $99.9 million, offset in part by payment of dividends of $67.8 million and net repayments under our revolving lines of credit of $21.0 million.

Cash Requirements and Capital Resources

We believe our cash flows from operations, existing borrowing capacity, debt and equity issuances and future rate increases should be sufficient to satisfy our material cash requirements over the short-term and the long-term. As a rate-regulated utility our customer rates are generally structured to recover expected operating costs, with an opportunity to earn a return on our invested capital. This structure supports recovery for many of our operating expenses, although there are situations where the timing of our cash outlays results in increased working capital requirements. Due to the seasonality of our utility business, our short-term working capital requirements typically peak during the coldest winter months and warmest summer months when we cover the lag between when purchasing energy supplies and when customers pay for these costs. Our credit facilities may also be utilized for funding cash requirements during seasonally active construction periods, with peak activity during warmer months. Our cash requirements also include a variety of contractual obligations as outlined below in the “Contractual Obligations and Other Commitments” section.

Our material cash requirements are also related to investment in our business through our capital expenditure program. Our estimated capital expenditures are discussed in our Annual Report on Form 10-K for the year ended December 31, 2022 within the Management’s Discussion and Analysis of Financial Condition and Results of Operations under the "Significant Infrastructure Investments and Initiatives" section. As of June 30, 2023, there have been no material changes in our estimated capital expenditures. The actual amount of capital expenditures is subject to certain factors including the impact that a material change in operations, available financing, supply chain issues, or inflation could impact our current liquidity and ability to fund capital resource requirements. Events such as these could cause us to defer a portion of our planned capital expenditures, as necessary. To fund our strategic growth opportunities, we evaluate the additional capital need in balance with debt capacity and equity issuances that would be intended to allow us to maintain investment grade ratings.
48



Credit Facilities

Liquidity is generally provided by internal cash flows and the use of our unsecured revolving credit facilities. We utilize availability under our revolving credit facilities to manage our cash flows due to the seasonality of our business and to fund capital investment. Cash on hand in excess of current operating requirements is generally used to invest in our business and reduce borrowings.

Our $425 million Credit Facility has a maturity date of May 18, 2027. The Credit Facility includes uncommitted features that allow us to request up to two one-year extensions to the maturity date and increase the size by an additional $75 million with the consent of the lenders. The Credit Facility does not amortize and is unsecured. Borrowings may be made at interest rates equal to (a) secured overnight financing rate as administered by the Federal Reserve Bank of New York (SOFR), plus a credit spread adjustment of 10.0 basis points, plus a margin of 100.0 to 175.0 basis points, or (b) a base rate, plus a margin of 0.0 to 75.0 basis points. A total of nine banks participate in the facility, with no one bank providing more than 15 percent of the total availability.

Our $25 million Swingline Facility has a maturity date of March 27, 2025. The Swingline Facility does not amortize and is unsecured. Borrowings may be made at interest rates equal to (a) SOFR, plus a margin of 90.0 basis points, or (b) a base rate plus a margin of 12.5 basis points.

As of June 30, 2023 and 2022 the outstanding balances on the above credit facilities were $191.0 million and $352.0 million, respectively. As of July 21, 2023, our availability under our revolving credit facilities was approximately $368.0 million, and there were no letters of credit outstanding.

Our $100 million Additional Credit Facility has a maturity date of April 28, 2024. The Additional Credit Facility does not amortize and is unsecured. Borrowings may be made at interest rates equal to (a) SOFR, plus a credit spread adjustment of 10.0 basis points, plus a margin of 100.0 to 175.0 basis points, or (b) a base rate, plus a margin of 0.0 to 75.0 basis points. There is currently no amount outstanding associated with this Additional Credit Facility.

Long-term Debt and Equity

We generally issue long-term debt to refinance other long-term debt maturities and borrowings under our revolving credit facilities, as well as to fund long-term capital investments and strategic opportunities. We have $100.0 million of debt maturing in March 2024, which we intend to refinance.

On March 30, 2023, we issued and sold $239.0 million aggregate principal amount of Montana First Mortgage Bonds at a fixed interest rate of 5.57 percent maturing on March 30, 2033. On this same day, we issued and sold $31.0 million aggregate principal amount of South Dakota First Mortgage Bonds at a fixed interest rate of 5.57 percent maturing on March 30, 2033. On May 1, 2023, we issued and sold an additional $30.0 million aggregate principal amount of South Dakota First Mortgage Bonds at a fixed interest rate of 5.42 percent maturing on May 1, 2033. These bonds were issued in transactions exempt from the registration requirements of the Securities Act of 1933. Proceeds were used to repay a portion of our outstanding borrowings under our revolving credit facilities and for other general corporate purposes. The bonds are secured by our electric and natural gas assets in Montana and South Dakota.

In June 2023, we amended our Equity Distribution Agreement to replace one of the sales agents. Pursuant to the Equity Distribution Agreement we may offer and sell shares of our common stock from time to time, having an aggregate gross sales price of up to $200.0 million, through an At-the-Market (ATM) offering program, including an equity forward sales component. This is a three-year agreement, expiring on February 11, 2024. During the three months ended June 30, 2023, we issued 188,682 shares of common stock under the ATM program at an average price of $57.83 per share, for net proceeds of $10.8 million which is net of sales commissions and other fees paid of approximately $0.1 million.

On June 29, 2023, the City of Forsyth, Rosebud County, Montana issued $144.7 million principal amount of Pollution Control Revenue Refunding Bonds (2023 Pollution Control Bonds) on our behalf. The 2023 Pollution Control Bonds were issued at a fixed interest rate of 3.88 percent maturing on July 1, 2028. The proceeds of the issuance were loaned to us pursuant to a Loan Agreement and were deposited directly with U.S. Bank Trust Company, National Association, as trustee, for the redemption of the 2.00 percent, $144.7 million City of Forsyth Pollution Control Revenue Refunding Bonds due on August 1, 2023 that had previously been issued on our behalf. Pursuant to the Loan Agreement, we are obligated to make payments in such amounts and at such times as will be sufficient to pay, when due, the principal and interest on the 2023 Pollution Control Bonds. Our obligations under the Loan Agreement are secured by delivery of a like amount of our Montana First Mortgage Bonds, which are secured by our Montana electric and natural gas assets.
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So long as we are making payments under the Loan Agreement, no payments under these mortgage bonds will be due. The 2023 Pollution Control Bonds were issued in a transaction exempt from the registration requirements of the Securities Act of 1933, as amended.

We generally issue equity securities to fund long-term investment in our business. We evaluate our equity issuance needs to support our plan to maintain a 50 - 55 percent debt to total capital ratio excluding finance leases. We anticipate issuing $63.6 million of common stock through our ATM program through the remainder of 2023.

Credit Ratings

In general, less favorable credit ratings make debt financing more costly and more difficult to obtain on terms that are favorable to us and our customers, may impact our trade credit availability, and could result in the need to issue additional equity securities. Fitch Ratings (Fitch), Moody’s Investors Service (Moody’s), and S&P Global Ratings (S&P) are independent credit-rating agencies that rate our debt securities. These ratings indicate the agencies’ assessment of our ability to pay interest and principal when due on our debt. As of July 21, 2023, our current ratings with these agencies are as follows:
  Senior Secured Rating Senior Unsecured Rating Outlook
Fitch A- BBB+ Stable
Moody’s A3 Baa2 Stable
S&P A- BBB Stable

A security rating is not a recommendation to buy, sell or hold securities. Such rating may be subject to revision or withdrawal at any time by the credit rating agency and each rating should be evaluated independently of any other rating.

Contractual Obligations and Other Commitments

We have a variety of contractual obligations and other commitments that require payment of cash at certain specified periods. The following table summarizes our contractual cash obligations and commitments as of June 30, 2023.
  Total 2023 2024 2025 2026 2027 Thereafter
  (in thousands)
Long-term debt(1)
$ 2,670,660  $ —  $ 100,000  $ 325,000  $ 105,000  $ 166,000  $ 1,974,660 
Finance leases 10,405  1,606  3,338  3,596  1,865  —  — 
Estimated pension and other postretirement obligations(2)
57,160  11,392  11,667  11,367  11,367  11,367  N/A
Qualifying facilities liability(3)
342,296  39,234  74,110  60,360  55,393  56,665  56,534 
Supply and capacity contracts(4)
2,748,013  219,539  289,237  237,647  248,875  232,176  1,520,539 
Contractual interest payments on debt(5)
1,581,732  54,698  113,075  103,748  97,658  89,133  1,123,420 
Commitments for significant capital projects(6)
118,908  45,399  63,434  10,075  —  —  — 
Total Commitments(7)
$ 7,529,174  $ 371,868  $ 654,861  $ 751,793  $ 520,158  $ 555,341  $ 4,675,153 
_________________________
(1)Represents cash payments for long-term debt and excludes $12.6 million of debt discounts and debt issuance costs, net.
(2)We estimate cash obligations related to our pension and other postretirement benefit programs for five years, as it is not practicable to estimate thereafter. Pension and postretirement benefit estimates reflect our expected cash contributions, which may be in excess of minimum funding requirements.
(3)Certain QFs require us to purchase minimum amounts of energy at prices ranging from $64 to $136 per MWH through 2029. Our estimated gross contractual obligation related to these QFs is approximately $342.3 million. A portion of the costs incurred to purchase this energy is recoverable through rates authorized by the MPSC, totaling approximately $297.1 million.
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(4)We have entered into various purchase commitments, largely purchased power, electric transmission, coal and natural gas supply and natural gas transportation contracts. These commitments range from one to 26 years. The energy supply costs incurred under these contracts are generally recoverable through rate mechanisms approved by the MPSC.
(5)Contractual interest payments include our revolving credit facilities, which have a variable interest rate. We have assumed an average interest rate of 6.44 percent on the outstanding balance through maturity of the facilities.
(6)Represents significant firm purchase commitments for construction of planned capital projects.
(7)The table above excludes potential tax payments related to uncertain tax positions as they are not practicable to estimate. Additionally, the table above excludes reserves for environmental remediation (See Note 10 - Commitments and Contingencies) and asset retirement obligations as the amount and timing of cash payments may be uncertain.

Other Obligations - As a co-owner of Colstrip, we provided surety bonds of approximately $15.7 million and $17.3 million as of June 30, 2023 and December 31, 2022, respectively, to ensure the operation and maintenance of remedial and closure actions are carried out related to the Administrative Order on Consent Regarding Impacts Related to Wastewater Facilities Comprising the Closed-Loop System at Colstrip Steam Electric Stations, Colstrip Montana (the AOC) as required by the MDEQ. As costs are incurred under the AOC, the surety bonds will be reduced.


CRITICAL ACCOUNTING POLICIES AND ESTIMATES
 
Our discussion and analysis of financial condition and results of operations is based on our Financial Statements, which have been prepared in accordance with GAAP. The preparation of these Financial Statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities. We base our estimates on historical experience and other assumptions that are believed to be proper and reasonable under the circumstances.

We continually evaluate the appropriateness of our estimates and assumptions. Actual results could differ from those estimates. We consider an estimate to be critical if it is material to the Financial Statements and it requires assumptions to be made that were uncertain at the time the estimate was made and changes in the estimate are reasonably likely to occur from period to period. This includes the accounting for the following: regulatory assets and liabilities, pension and postretirement benefit plans, income taxes and qualifying facilities liability. These policies were disclosed in Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2022. As of June 30, 2023, there have been no material changes in these policies.




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ITEM 3.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
 
We are exposed to market risks, including, but not limited to, interest rates, energy commodity price volatility, and counterparty credit exposure. We have established comprehensive risk management policies and procedures to manage these market risks. There have been no material changes in our market risks as disclosed in our Annual Report on Form 10-K for the year ended December 31, 2022.
 

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ITEM 4.CONTROLS AND PROCEDURES
 
Evaluation of Disclosure Controls and Procedures

We have established disclosure controls and procedures designed to ensure that information required to be disclosed in the reports we file or submit under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms, and accumulated and reported to management, including the principal executive officer and principal financial officer to allow timely decisions regarding required disclosure.

We conducted an evaluation, under the supervision and with the participation of our principal executive officer and principal financial officer, of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934). Based on this evaluation, our principal executive officer and principal financial officer have concluded that, as of the end of the period covered by this report, our disclosure controls and procedures were effective.

Changes in Internal Control Over Financial Reporting

There have been no changes in our internal control over financial reporting during the most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.




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PART II. OTHER INFORMATION
 
ITEM 1.LEGAL PROCEEDINGS
 
See Note 10 - Commitments and Contingencies, to the Financial Statements for information regarding legal proceedings.
 
ITEM 1A.  RISK FACTORS

Refer to our Annual Report on the Form 10-K for the year ended December 31, 2022 for disclosure of the risk factors that could have a significant impact on our business, financial condition, results of operations or cash flows and could cause actual results or outcomes to differ materially from those discussed in our reports filed with the SEC (including this Quarterly Report on Form 10-Q), and elsewhere. These risk factors have not changed materially since such disclosure.
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ITEM 6.                      EXHIBITS -
 
(a) Exhibits

Exhibit 4.1 — Eighteenth Supplemental Indenture, dated as of May 1, 2023, between the Company and The Bank of New York Mellon, as trustee. (incorporated by reference to Exhibit 4.1 of NorthWestern Corporation's Current Report on Form 8-K, dated May 1, 2023, Commission File No. 1-10499).

Exhibit 4.2 — Nineteenth Supplemental Indenture, dated as of June 1, 2023, between the Company and The Bank of New York Mellon, as trustee. (incorporated by reference to Exhibit 4.1 of NorthWestern Corporation's Current Report on Form 8-K, dated June 5, 2023, Commission File No. 1-10499).

Exhibit 4.3 — Forty-third Supplemental Indenture, dated as of May 1, 2023, between the Company and The Bank of New York Mellon and Mary Miselis, as trustees. (incorporated by reference to Exhibit 4.2 of NorthWestern Corporation's Current Report on Form 8-K, dated June 5, 2023, Commission File No. 1-10499).

Exhibit 4.4 - Indenture, dated as of June 1, 2023 between City of Forsyth, Rosebud County, Montana and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 of NorthWestern Corporation's Current Report on Form 8-K, dated June 29, 2023, Commission File No. 1-10499).

Exhibit 4.5 - Loan Agreement, dated as of June 1, 2023, by and between the City of Forsyth, Rosebud County, Montana, and NorthWestern Corporation (incorporated by reference to Exhibit 4.2 of NorthWestern Corporation's Current Report on Form 8-K, dated June 29, 2023, Commission File No. 1-10499).

Exhibit 4.6 - Bond Delivery Agreement, dated as of June 1, 2023, between NorthWestern Corporation and U.S. Bank Trust Company, National Association, as trustee (incorporated by reference to Exhibit 4.3 of NorthWestern Corporation's Current Report on Form 8-K, dated June 29, 2023, Commission File No. 1-10499).

Exhibit 4.7 - Forty-fourth Supplemental Indenture, dated as of June 1, 2023, between NorthWestern Corporation and The Bank of New York Mellon and Mary Miselis, as trustees (incorporated by reference to Exhibit 4.4 of NorthWestern Corporation's Current Report on Form 8-K, dated June 29, 2023, Commission File No. 1-10499).

Exhibit 10.1Amendment No. 1 to Equity Distribution Agreement by and among the Company, on the one hand, and JPMorgan Chase Bank, National Association, Bank of America N.A., Canadian Imperial Bank of Commerce and Bank of Montreal as forward purchasers and J.P. Morgan Securities LLC, BofA Securities, Inc., CIBC World Markets Corp. and BMO Capital Markets Corp., as sales agents and forward sellers (incorporated by reference to Exhibit 1.1 of NorthWestern Corporation's Current Report on Form 8-K, dated June 15, 2023, Commission File No. 1-10499).

Exhibit 31.1—Certification of chief executive officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 

Exhibit 31.2—Certification of chief financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
 
Exhibit 32.1—Certification of chief executive officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
 
Exhibit 32.2—Certification of chief financial officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
 
Exhibit 101.INS—Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
 
Exhibit 101.SCH—Inline XBRL Taxonomy Extension Schema Document
 
Exhibit 101.CAL—Inline XBRL Taxonomy Extension Calculation Linkbase Document
 
Exhibit 101.DEF—Inline XBRL Taxonomy Extension Definition Linkbase Document
 
Exhibit 101.LAB—Inline XBRL Taxonomy Label Linkbase Document
 
Exhibit 101.PRE—Inline XBRL Taxonomy Extension Presentation Linkbase Document Exhibit 104 Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)
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56



SIGNATURES
 
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
    NorthWestern Corporation
Date: July 25, 2023 By: /s/ CRYSTAL LAIL
    Crystal Lail
    Vice President and Chief Financial Officer
    Duly Authorized Officer and Principal Financial Officer
57
EX-31.1 2 ex311certificationq22023.htm EX-31.1 CERTIFICATION OF PRESIDENT AND CHIEF EXECUTIVE OFFICER Document

EXHIBIT 31.1
CERTIFICATION
I, Brian B. Bird, certify that:
1.I have reviewed this report on Form 10-Q of NorthWestern Corporation;
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
July 25, 2023
/s/ BRIAN B. BIRD
Brian B. Bird
President and Chief Executive Officer







EX-31.2 3 ex312certificationq22023.htm EX-31.2 CERTIFICATION OF CHIEF FINANCIAL OFFICER Document

EXHIBIT 31.2
CERTIFICATION

I, Crystal Lail, certify that:
1.I have reviewed this report on Form 10-Q of NorthWestern Corporation;
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
July 25, 2023
/s/ CRYSTAL LAIL
Crystal Lail
Vice President and Chief Financial Officer




EX-32.1 4 ex321certificationq22023.htm EX-32.1 CERTIFICATION OF BRIAN B. BIRD PURSUANT TO SECTION 906 Document


EXHIBIT 32.1
CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of NorthWestern Corporation (the “Company”) on Form 10-Q for the period ended June 30, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian B. Bird, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:
1)The Report fully complies with the requirements of Sections 13(a) or 15(d) of the Securities Exchange Act of 1934; and
2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
July 25, 2023 /s/ BRIAN B. BIRD
Brian B. Bird
President and Chief Executive Officer


EX-32.2 5 ex322certificationq22023.htm EX-32.2 CERTIFICATION OF CRYSTAL LAIL PURSUANT TO SECTION 906 Document


Exhibit 32.2
CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of NorthWestern Corporation (the “Company”) on Form 10-Q for the period ended June 30, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Crystal Lail, Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:
1)The Report fully complies with the requirements of Sections 13(a) or 15(d) of the Securities Exchange Act of 1934; and
2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
July 25, 2023 /s/ CRYSTAL LAIL
Crystal Lail
Vice President and Chief Financial Officer