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0000764622falseAZ00000072868-KMay 1, 2025falseAZfalsefalsefalsefalsefalse00007646222025-05-012025-05-010000764622pnw:ArizonaPublicServiceCompanyMember2025-05-012025-05-01

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549 
 
FORM 8-K 
 
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
Date of report (Date of earliest event reported):
May 1, 2025
Commission File
Number
  Exact name of each registrant as specified in its
charter; State or other jurisdiction of incorporation or organization; Address of principal executive offices, including zip code; and
Telephone number, including area code
IRS Employer
Identification No.
1-8962   PINNACLE WEST CAPITAL CORPORATION 86-0512431
(an Arizona corporation)
400 North Fifth Street, P.O. Box 53999
Phoenix Arizona 85072-3999
(602) 250-1000
1-4473   ARIZONA PUBLIC SERVICE COMPANY 86-0011170
(an Arizona corporation)
400 North Fifth Street, P.O. Box 53999
Phoenix Arizona 85072-3999
(602) 250-1000
Not Applicable
(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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, no par value
PNW
New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).
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. ¨

This combined Form 8-K is separately filed or furnished by Pinnacle West Capital Corporation and Arizona Public Service Company. Each registrant is filing or furnishing on its own behalf all of the information contained in this Form 8-K that relates to such registrant and, where required, its subsidiaries. Except as stated in the preceding sentence, neither registrant is filing or furnishing any information that does not relate to such registrant, and therefore makes no representation as to any such information.






Item 2.02. Results of Operations and Financial Condition.

    The following information is furnished pursuant to Item 2.02.

    On May 1, 2025, Pinnacle West Capital Corporation (“Pinnacle West”) issued a press release regarding its financial results for the fiscal quarter ended March 31, 2025. A copy of the press release is attached hereto as Exhibit 99.1.

Item 7.01. Regulation FD Disclosure.

    The following information is furnished pursuant to Item 7.01.

    Pinnacle West is providing a copy of the slide presentation made in connection with the quarterly earnings conference call on May 1, 2025. This information contains Pinnacle West operating results for the fiscal quarter ended March 31, 2025 and earnings outlook for 2025. The slide presentation is attached hereto as Exhibit 99.2 and is concurrently being posted to Pinnacle West’s website at www.pinnaclewest.com.

Item 9.01.    Financial Statements and Exhibits.

    (d)    Exhibits
Exhibit No. Registrant(s) Description
99.1 Pinnacle West
Arizona Public Service Company
99.2 Pinnacle West
Arizona Public Service Company
104.0 Pinnacle West
Arizona Public Service Company
104 Cover Page Interactive Data File (embedded within the Inline XBRL document)



SIGNATURES

    Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

PINNACLE WEST CAPITAL CORPORATION
(Registrant)
Dated: May 1, 2025 By: /s/ Andrew Cooper
Andrew Cooper
Senior Vice President and
Chief Financial Officer
ARIZONA PUBLIC SERVICE COMPANY
(Registrant)
Dated: May 1, 2025 By: /s/ Andrew Cooper
Andrew Cooper
Senior Vice President and
Chief Financial Officer













EX-99.1 2 a8-kpnw033125exhibit991.htm EX-99.1 Document
Exhibit 99.1
a2q2020earningsfinal0_imaga.jpg
FOR IMMEDIATE RELEASE May 1, 2025
Media Contact:
Analyst Contact:
Alan Bunnell (602) 250-3376
Amanda Ho (602) 250-3334
Website: pinnaclewest.com

PINNACLE WEST REPORTS LOWER FIRST-QUARTER FINANCIAL RESULTS

•Results in line with company's expectations; full year 2025 earnings guidance affirmed

•Planned power plant outages contribute to higher operations and maintenance expenses versus a year ago

•APS employees focus on summer preparedness, reliability and resilience

PHOENIX – Pinnacle West Capital Corp. (NYSE: PNW) today reported a consolidated net loss attributable to common shareholders of $4.6 million, or a loss of $0.04 per diluted share of common stock, for the quarter ended March 31, 2025. This result compares with consolidated net income attributable to common shareholders of $16.9 million, or $0.15 per diluted share, for the same period in 2024.

The results reflect a decrease of about $22 million, primarily the result of higher operations and maintenance expense; depreciation and amortization expense, mostly due to increased plant and intangible assets; lower pension and other benefit service cost credits; lower other income due to the gain on the sale of a former subsidiary recognized in the prior year; and higher interest charges. These negative factors were partially offset by the favorable impacts of new customer rates; a gain from a non-utility equity investment made by subsidiary El Dorado; lower income taxes due to lower pretax income and higher tax benefits related to employee benefits; higher transmission revenue; and higher revenue resulting from Arizona Public Service Co.’s (APS) Lost Fixed Cost Recovery (LFCR) adjustor mechanism.

“Financial results in the first quarter were in line with our expectations, especially given the power plant overhauls and maintenance work that we had built into our budget to ensure our system runs reliably during the upcoming summer months,” said Pinnacle West Chairman, President and Chief Executive Officer Ted Geisler. "We remain optimistic that we will achieve our annual targets as customer and electricity sales growth remain robust, along with Arizona's overall economy."

"With Arizona's population growing faster than the national average, it's clear that people view Arizona as an attractive place to live and do business."

A Thriving, Growing Service Territory
The total number of APS retail customers in the first quarter grew a robust 2.3%, while retail sales increased 2.1% quarter over quarter as Arizona’s economy remains a diverse growth and investment hub. In fact, a recent study by the U.S. Census Bureau indicates Maricopa County (home to about 70% of APS’s customers) had the third-largest numeric growth among U.S. counties. Only Harris County, Texas — where Houston is located — and Miami-Dade County, Fla., experienced larger growth. Further, according to a separate Commercial Cafe report, Phoenix remains the number one spot as the best-positioned industrial real estate market, ranking ahead of Orange County and the Inland Empire in California.

Summer Reliability and Safety Preparations



With temperatures in Arizona quickly heating up, employees have been focused on comprehensive summer preparedness designed to ensure safe and reliable power is delivered when the company’s 1.4 million customers need it most to cool their homes and businesses. “To serve our customers with top-tier reliability, we work year-round on operational preparedness, resource planning, procuring sufficient reserve margins, creating customer partnerships to manage peak demand, and maintaining a comprehensive fire mitigation program,” Geisler emphasized.

APS crews continually conduct patrols – on foot, by vehicle and in the air – across a sprawling network of more than 40,000 miles of power lines, to protect and maintain a strong and resilient energy system. In addition, APS employees are nearing completion of a scheduled maintenance and refueling outage at Palo Verde Generating Station Unit 1. The three-unit nuclear plant – a primary source of clean electricity for the Southwest and one of the largest power producers in the U.S. – is critical to meeting summer demand across the Desert Southwest.

With Arizona’s hot summers, low rainfall and dry vegetation, the company is taking further action to support wildfire-prone communities by employing advanced risk modeling tools; expanding its Public Safety Power Shutoffs (PSPS) program to mitigate fire risks and help keep communities safe; and installing innovative fire- and weather-tracking technology on the grid. Among its newly adopted technology, APS has deployed artificial intelligence (AI) fire-sensing cameras to proactively search for early signs of wildfires, thereby enhancing the company’s already vigorous wildfire mitigation program. These cameras alert APS fire mitigation experts and fire dispatch centers when smoke and heat traces are detected in targeted, high fire-risk areas.

“The new AI cameras function as powerful extra sets of eyes and are key to helping us deliver safe, reliable energy to all our customers,” said Geisler. “When minutes matter, integration of this advanced detection technology improves firefighter rapid-response capabilities, thereby helping protect both critical infrastructure and surrounding communities.”

Enhancing Customers’ Experiences
The company’s focus on summer readiness extends to delivering an industry-leading customer experience. Customer touchpoints – including an interactive outage map and email and text alerts – are continually being enhanced ahead of Arizona’s peak summer season. In conjunction with APS’s 24/7 Customer Care Center, these tools will help customers stay better informed during any outages.

Furthermore, APS customers are benefiting from an industry-leading call-center featuring fast response times and knowledgeable, courteous advisors; increased proactive email and text notifications; and an industry-leading digital experience through aps.com and the APS mobile app that helps customers stay informed and complete transactions, monitor energy consumption, select their optimal rate plan and efficiently manage their account. All the while, the company continues to emphasize employee learning, tools and resources to ensure all team members understand their individual and collective roles in customers’ experiences and interactions with APS.

Financial Outlook
For 2025, the company continues to estimate its consolidated earnings will be within a range of $4.40 to $4.60 per diluted share on a weather-normalized basis. Key factors and assumptions underlying this outlook can be found in the first-quarter 2025 earnings presentation slides at pinnaclewest.com/investors.

Conference Call and Webcast
Pinnacle West invites interested parties to listen to the live webcast of management’s conference call to discuss the company’s financial results and recent developments, and to provide an update on the company’s longer-term financial outlook, at noon ET (9 a.m. Arizona time) today, May 1. The webcast can be accessed at pinnaclewest.com/presentations and will be available for replay on the website for 30 days. To access the live conference call by telephone, dial (888) 506-0062 or (973) 528-0011 for international callers and enter participant access code 554993. A replay of the call also will be available at pinnaclewest.com/presentations or by telephone until 11:59 p.m. ET, Thursday, May 8, 2025, by calling (877) 481-4010 in the U.S. and Canada or (919) 882-2331 internationally and entering replay passcode 52252.




General Information
Pinnacle West Capital Corp., an energy holding company based in Phoenix, has consolidated assets of more than $27 billion, about 6,500 megawatts of generating capacity and approximately 6,400 employees in Arizona and New Mexico. Through its principal subsidiary, Arizona Public Service, the company provides retail electricity service to about 1.4 million Arizona homes and businesses. For more information about Pinnacle West, visit the company’s website at pinnaclewest.com.

Dollar amounts in this news release are after income taxes. Earnings per share amounts are based on average diluted common shares outstanding. For more information on Pinnacle West’s operating statistics and earnings, please visit pinnaclewest.com/investors.


FORWARD-LOOKING STATEMENTS
This press release contains forward-looking statements based on current expectations. These forward-looking statements are often identified by words such as "estimate," "predict," "may," "believe," "plan," "expect," "require," "intend," "assume," "project," "anticipate," "goal," "seek," "strategy," "likely," "should," "will," "could," and similar words. Because actual results may differ materially from expectations, we caution readers not to place undue reliance on these statements. A number of factors could cause future results to differ materially from historical results, or from outcomes currently expected or sought by Pinnacle West or APS. These factors include, but are not limited to:

•uncertainties associated with the current and future economic environment, including economic growth rates, labor market conditions, inflation, supply chain delays, increased expenses, volatile capital markets, or other unpredictable effects;
•current and future economic conditions in Arizona, such as the housing market and overall business and regulatory environment;
•our ability to manage capital expenditures and operations and maintenance costs while maintaining reliability and customer service levels;
•the direct and indirect effect on our facilities or business from cybersecurity threats or intrusions, data security breaches, terrorist attack, physical attack, severe storms, or other catastrophic events, such as fires, explosions, pandemic health events, or similar occurrences;
•variations in demand for electricity, including those due to weather, seasonality (including large increases in ambient temperatures), the general economy or social conditions, customer, and sales growth (or decline), the effects of energy conservation measures and distributed generation, and technological advancements;
•the potential effects of climate change on our electric system, including as a result of weather extremes such as prolonged drought and high temperature variations in the area where APS conducts its business;
•power plant and transmission system performance and outages;
•competition in retail and wholesale power markets;
•regulatory and judicial decisions, developments, and proceedings;
•new legislation, ballot initiatives and regulation or interpretations of existing legislation or regulations, including those relating to environmental requirements, regulatory and energy policy, nuclear plant operations and potential deregulation of retail electric markets;
•fuel and water supply availability;
•our ability to achieve timely and adequate rate recovery of our costs through our rates and adjustor recovery mechanisms, including returns on and of debt and equity capital investment;
•the ability of APS to meet renewable energy and energy efficiency mandates and recover related costs;
•the ability of APS to achieve its clean energy goals (including a goal by 2050 of 100% clean, carbon-free electricity) and, if these goals are achieved, the impact of such achievement on APS, its customers, and its business, financial condition, and results of operations;
•risks inherent in the operation of nuclear facilities, including spent fuel disposal uncertainty;
•the development of new technologies which may affect electric sales or delivery, including as a result of delays in the development and application of new technologies;
•the cost of debt, including increased cost as a result of rising interest rates, and equity capital and our ability to access capital markets when required;



•environmental, economic, and other concerns surrounding coal-fired generation, including regulation of greenhouse gas emissions;
•volatile fuel and purchased power costs;
•the investment performance of the assets of our nuclear decommissioning trust, captive insurance cell, coal mine reclamation escrow, pension, and other postretirement benefit plans and the resulting impact on future funding requirements;
•the liquidity of wholesale power markets and the use of derivative contracts in our business;
•potential shortfalls in insurance coverage;
•new accounting requirements or new interpretations of existing requirements;
•generation, transmission and distribution facilities and system conditions and operating costs;
•our ability to meet the anticipated future need for additional generation and associated transmission facilities in our region;
•the willingness or ability of counterparties, power plant participants and power plant landowners to meet contractual or other obligations or extend the rights for continued power plant operations; and
•restrictions on dividends or other provisions in our credit agreements and Arizona Corporation Commission orders.

These and other factors are discussed in the most recent Pinnacle West/APS Form 10-K and 10-Q along with other public filings with the Securities and Exchange Commission, which readers should review carefully before placing any reliance on our financial statements or disclosures. Neither Pinnacle West nor APS assumes any obligation to update these statements, even if our internal estimates change, except as required by law.

# # #



PINNACLE WEST CAPITAL CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
(unaudited)
(dollars and shares in thousands, except per share amounts)

Three Months Ended
March 31,
2025 2024
Operating Revenues $ 1,032,280  $ 951,712 
Operating Expenses
Fuel and purchased power 380,071  357,864 
Operations and maintenance 300,109  257,578 
Depreciation and amortization 234,940  210,294 
Taxes other than income taxes 59,354  59,164 
Other expense 584  20 
Total 975,058  884,920 
Operating Income
57,222  66,792 
Other Income (Deductions)
Allowance for equity funds used during construction 13,249  10,292 
Pension and other postretirement non-service credits - net 2,958  11,568 
Other income 17,461  30,607 
Other expense (2,570) (7,567)
Total 31,098  44,900 
Interest Expense
Interest charges 104,943  99,774 
Allowance for borrowed funds used during construction (10,102) (13,141)
Total 94,841  86,633 
Income (Loss) Before Income Taxes
(6,521) 25,059 
Income taxes (benefit)
(6,183) 3,891 
Net Income (Loss)
(338) 21,168 
Less: Net income attributable to noncontrolling interests
4,306  4,306 
Net Income (Loss) Attributable To Common Shareholders
$ (4,644) $ 16,862 
Weighted-Average Common Shares Outstanding - Basic 119,594  113,621 
Weighted-Average Common Shares Outstanding - Diluted 119,594  114,227 
Earnings Per Weighted-Average Common Share Outstanding
Net income (loss) attributable to common shareholders - basic
$ (0.04) $ 0.15 
Net income (loss) attributable to common shareholders - diluted
$ (0.04) $ 0.15 

EX-99.2 3 q1_2025xearningsxfinal.htm EX-99.2 q1_2025xearningsxfinal
Renewed, Reliable and Resilient First-Quarter Financial Results May 1, 2025


 
2 This presentation contains forward-looking statements based on current expectations, including statements regarding our earnings guidance and financial outlook and goals. These forward-looking statements are often identified by words such as “estimate,” “predict,” “may,” “believe,” “plan,” “expect,” “require,” “intend,” “assume,” “project,” "anticipate," "goal," "seek," "strategy," "likely," "should," "will," "could," and similar words. Because actual results may differ materially from expectations, we caution you not to place undue reliance on these statements. A number of factors could cause future results to differ materially from historical results, or from outcomes currently expected or sought by Pinnacle West or APS. These factors include, but are not limited to: uncertainties associated with the current and future economic environment, including economic growth rates, labor market conditions, inflation, supply chain delays, increased expenses, volatile capital markets, or other unpredictable effects; current and future economic conditions in Arizona, such as the housing market and overall business and regulatory environment; our ability to manage capital expenditures and operations and maintenance costs while maintaining reliability and customer service levels; the direct or indirect effect on our facilities or business from cybersecurity threats or occurrences; variations in demand for electricity, including those due to weather, seasonality (including large increases in ambient temperatures), the general economy or social conditions, customer, and sales growth (or decline), the effects of energy conservation measures and distributed generation, and technological advancements; the potential effects of climate change on our electric system, including as a result of weather extremes such as prolonged drought and high temperature variations in the area where APS conducts its business; power plant and transmission system performance and outages; competition in retail and wholesale power markets; regulatory and judicial decisions, developments, and proceedings; new legislation, ballot initiatives and regulation or interpretations of existing legislation or regulations, including those relating to environmental requirements, regulatory and energy policy, nuclear plant operations and potential deregulation of retail electric markets; fuel and water supply availability; our ability to achieve timely and adequate rate recovery of our costs through our rates and adjustor recovery mechanisms, including returns on and of debt and equity capital investment; the ability of APS to meet renewable energy and energy efficiency mandates and recover related costs; the ability of APS to achieve its clean energy goals (including a goal by 2050 of 100% clean, carbon-free electricity) and, if these goals are achieved, the impact of such achievement on APS, its customers, and its business, financial condition, and results of operations; risks inherent in the operation of nuclear facilities, including spent fuel disposal uncertainty; data security breaches, terrorist attack, physical attack, severe storms, or other catastrophic events, such as fires, explosions, pandemic health events or similar occurrences; the development of new technologies which may affect electric sales or delivery, including as a result of delays in the development and application of new technologies; the cost of debt, including increased cost as a result of rising interest rates, and equity capital and our ability to access capital markets when required; environmental, economic, and other concerns surrounding coal-fired generation, including regulation of greenhouse gas emissions; volatile fuel and purchased power costs; the investment performance of the assets of our nuclear decommissioning trust, captive insurance cell, coal mine reclamation escrow, pension, and other postretirement benefit plans and the resulting impact on future funding requirements; the liquidity of wholesale power markets and the use of derivative contracts in our business; potential shortfalls in insurance coverage; new accounting requirements or new interpretations of existing requirements; generation, transmission and distribution facilities and system conditions and operating costs; our ability to meet the anticipated future need for additional generation and associated transmission facilities in our region; the willingness or ability of counterparties, power plant participants and power plant landowners to meet contractual or other obligations or extend the rights for continued power plant operations; and restrictions on dividends or other provisions in our credit agreements and ACC orders. These and other factors are discussed in the most recent Pinnacle West/APS Form 10-K along with other public filings with the Securities and Exchange Commission, which you should review carefully before placing any reliance on our financial statements, disclosures or earnings outlook. Neither Pinnacle West nor APS assumes any obligation to update these statements, even if our internal estimates change, except as required by law. In this presentation, references to net income and earnings per share (EPS) refer to amounts attributable to common shareholders. Forward Looking Statements


 
$0.36 ($0.27) ($0.16) ($0.03) ($0.05) ($0.04) $0.15 ($0.04) Q1 2025 vs Q1 2024 Operating Revenue less Fuel and Purchased Power 2022 GRC impacts $ 0.29 Transmission $ 0.04 Other $ 0.02 LFCR/2019 GRC appeal outcome $ 0.01 Sales/Usage2 $ 0.00 Q1 2024 Q1 2025 1 Includes costs and offsetting operating revenues associated with renewable energy and demand side management programs, see slide 21 for more information. 2 Includes reduction of accrued unbilled revenues of $11M in January 2025. 3 All other includes income taxes, other taxes, other, net and rounding. Operating Revenue less Fuel and Purchased Power1 O&M1 D&A Pension & OPEB non- service credits, net Interest, net AFUDC All other3 3 First-Quarter results All Other El Dorado investment $ 0.07 Other, net & all other $ 0.02 Income taxes $ 0.02 2024 BCE sale $ (0.15)


 
Key Factors and Assumptions (as of May 1, 2025) 2025 Adjusted gross margin (operating revenues, net of fuel and purchased power expenses, x/RES,DSM,CCT)1 $3.13 – $3.19 billion • Retail customer growth of 1.5%-2.5% • Weather-normalized retail electricity sales growth of 4.0%-6.0% • Includes 3.0%-5.0% contribution to sales growth of new large manufacturing facilities and several large data centers • Assumes normal weather Adjusted operating and maintenance expense (O&M x/RES,DSM,CCT)1 $965 – $985 million Other operating expenses (depreciation and amortization, and taxes other than income taxes) $1.16 – $1.18 billion Other income (pension and other post-retirement non-service credits, other income and other expense) $0 – $6 million Interest expense, net of allowance for borrowed and equity funds used during construction (Total AFUDC ~$120 million) $350 – $370 million Net income attributable to noncontrolling interests $17 million Effective tax rate 13.25% – 13.75% Average diluted common shares outstanding 122.3 million EPS Guidance $4.40 – $4.60 1 Excludes costs and offsetting operating revenues associated with renewable energy and demand side management programs. For reconciliation, see slide 21. 4 2025 EPS guidance


 
2025 EPS guidance of $4.40-$4.60 key drivers1  Retail customer growth of 1.5%-2.5%  Depreciation, amortization and property taxes due to higher plant in service  Weather-normalized retail electricity sales growth of 4%-6% (includes 3%-5% from large C&I)  2025 normal weather  Transmission revenue  Financing costs (debt & equity)  Operations and maintenance  Pension/OPEB non-service costs2  2024 BCE gain on sale Long-term guidance and key drivers1,2 • Long-term EPS growth target of 5%-7% off original 2024 midpoint • Retail customer growth of 1.5%-2.5% • Weather-normalized retail electricity sales growth of 4%-6% (includes 3%-5% from large C&I customers) 4.2% 2.4% 1.5% 5.7% 4.0%-6.0% 0% 1% 2% 3% 4% 5% 6% 7% 8% '21 '22 '23 '24 '25E Total Sales Growth 5 1 Arrows represent expected comparative year-over-year impact of each driver on earnings. 2 Primarily due to roll-off of positive amortization of prior service credits. Key drivers & assumptions for 2025 EPS guidance 1 Long-term EPS growth target based on the Company’s current weather normalized compound annual growth rate projections from 2024-2028. 2 Forecasted guidance range through 2027.


 
$7.80B $9.66B 2023-2026E 2024-2027E CapEx Profile $273 $380 $335 $275 $637 $665 $670 $675 $340 $450 $675 $750 $807 $905 $870 $950 2024 2025E 2026E 2027E APS Total 2024-2027 $9.66B Generation Transmission Distribution Other $2.06B $2.40B $2.55B $2.65B Source: 2025-2027 as disclosed in the First Quarter 2025 Form 10-Q Q4 2023 Today 6 Capital plan to support reliability and continued growth within our service territory


 
Current Approved Rate Base and Test Year Detail End-of-Year Rate Base and Growth Guidance1 ACC FERC Rate Effective Date 03/08/2024 06/01/2024 Test Year Ended 6/30/20221 12/31/2023 Equity Layer 51.93% 49.64% Allowed ROE 9.55% 10.75% Rate Base $10.36B2 $2.1B $11.23 $14.2 $2.12 $3.2 2023 2024 2025 2026 2027 ACC FERC 7 Rate base $ in billions, rounded Projected 1 Guidance excludes CWIP amounts of $1.7B in 2023 and $3.0B-$3.5B in 2027. 2 Derived from APS annual update of formula transmission service rates. 3 Represents unadjusted ACC jurisdictional rate base consistent with regulatory filings. 1 Adjusted to include post-test year plant in service through 06/30/2023. 2 Rate Base excludes $215M approved through Joint Resolution in Case No. E-01345A-19-0236. Generation spend through System Reliability Benefit Surcharge and transmission spend expected to total ~40% of tracked capital from 2024-2027 and help reduce regulatory lag Rate Base growing within our service territory


 
8 Operations & Maintenance Guidance • Reduced year-over-year core O&M excluding planned outages • Planned major outage in Q1 at Four Corners Unit 4 • Lean culture and declining O&M per MWh goal We are focused on cost control and customer affordability $955 $910 - $920 $141 $150 - $160 $70 $55 - $65 2024 2025E O&M Guidance (millions) Planned Outages RES/DSM Core O&M


 
Approx. $3.6B Cash from Operations1 Total Capital Investment $2.5B-$2.7B APS Debt2 $500M-700M PNW Debt2 1 Cash from operations is net of shareholder dividends. 2 APS and PNW debt issuance is net of maturities. • External equity to support balanced APS capital structure and expanded, accretive capital investment • Equity needs < prior targeted 40% of new capital • Financing plan consistent with balance sheet targets Funding Strategy 2025-2027 Financing Plan Approx. $7.6B $700-900M PNW Equity 9 Optimized financing plan to support balanced capital structure Feb. 2024 Forward Sale Priced Settled Dec. 2024 Settlement $725.1M $345.0M Forward ATM Program ($900M) Priced Settled Nov. 2024 ATM $49.6M Mar. 2025 ATM $49.5M Source: Amounts as disclosed in the First Quarter 2025 Form 10-Q Equity Strategy


 
Balance Sheet Targets • Solid investment-grade credit ratings • APS equity layer >50% • PNW FFO/Debt range of 14%-16% Corporate Ratings Senior Unsecured Ratings Short-Term Ratings Outlook APS Moody’s Baa1 Baa1 P-2 Stable S&P BBB+ BBB+ A-2 Stable Fitch BBB+ A- F2 Stable Pinnacle West Moody’s Baa2 Baa2 P-2 Stable S&P BBB+ BBB A-2 Stable Fitch BBB BBB F3 Stable 10 1 We are disclosing credit ratings to enhance understanding of our sources of liquidity and the effects of our ratings on our costs of funds. Ratings are as of April 28, 2025. We are focused on maintaining healthy credit ratings to support affordable growth1


 
$0 $200 $400 $600 $800 $1,000 $1,200 2025 2027 2029 2031 2033 2035 2037 2039 2041 2043 2045 2047 2049 APS Fixed APS Floating PNW Fixed PNW Floating($millions) As of March 31, 2025 11 Debt maturity profile shows well managed and stable financing plan


 
Appendix


 
13 • Projects that compete on cost and reliability from All-Source Request for Proposals • Determines prudency of new generation between general rate cases • Included in rates approximately 180 days after in service with Commission approval • Recovery at prevailing WACC less 100bps until future rate case • Traditional AFUDC treatment until asset is in service System Reliability Benefit Surcharge Key Features Continued Progress on Potential SRB Opportunities Proposed Project MWs Est. In-Service Status Agave BESS (Phase I) 150 2026 In Construction Sundance Expansion 90 2026 In Construction Ironwood Solar 168 2026 In Construction Redhawk Expansion 397 2028 Contracted SRB will expand our capacity to self-build generation to meet customer need with reduced lag


 
Source: APS 2024-2033 Ten Year Transmission System Plan Support customer growth Access to markets Increase resiliency 14 Making progress on multiple strategic transmission opportunities as part of 2025-2027 capital expenditure plan Line Length (miles) Voltage Status Est. In- Service Sundance to Milligan 22 230 kV Siting in progress 2027 Ocotillo to Pinnacle Peak 25 230 kV Siting in progress 2029 Panda to Freedom 40 230 kV Siting in progress 2029 Jojoba to Rudd 25 500 kV Siting in progress 2030 Transmission expansion will drive increased capital investment


 
2.3% 2.4% 2.2% 2.1% 2.1% 1.5%-2.5% 0% 1% 2% 3% 2020 2021 2022 2023 2024 2025E Residential Customer Growth1 APS Residential Growth Natn'l Avg.-Residential 15 • Phoenix housing is affordable compared to major cities in the region • U.S. Census ranked Maricopa County third among U.S. counties for growth • Phoenix is ranked #1 out of 15 top growth markets for manufacturing by Newmark Group, a global real estate firm • Arizona State University ranked #1 in Innovation for 10th straight year by U.S. News and World Report • Phoenix remains #1 as best positioned industrial real estate market by Commercial Café Report Arizona economy continues to be robust and attractive 1 National average from 2024 Itron Annual Energy Survey Report. Arizona continues to be an attractive service territory with strong customer growth - 10,000 20,000 30,000 40,000 2012 2016 2020 2024 New APS Customer Meter Sets


 
Source: Arizona Commerce Authority 16 Arizona’s commercial and industrial growth is diverse


 
0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2022 Applications 2023 Applications 2024 Applications 2025 Applications 200 216 108 20 2022 2023 2024 2025 Monthly data equals applications received minus cancelled applications. As of March 31, 2025, approximately 187,140 residential grid-tied solar photovoltaic (PV) systems have been installed in APS’s service territory, totaling approximately 1,676 MWdc of installed capacity. Excludes APS Solar Partner Program, APS Solar Communities, and Flagstaff Community Partnership Program. Note: www.arizonagoessolar.org logs total residential application volume, including cancellations. Residential DG (MWdc) Annual Additions 17 Residential PV Applications


 
$17 $14 $18 $18 $18 $16 $19 $26 $12 $15 $0 $5 $10 $15 $20 $25 $30 $35 $40 $45 $50 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Renewable Energy Demand Side Management 2024 $141 Million 2025 $33 Million 1 Renewable Energy and Demand Side Management expenses are substantially offset by adjustment mechanisms. Numbers may not foot due to rounding. ($ in millions pretax) 18 Renewable Energy & Demand Side Management expenses1


 
($3) Q1 Q2 Q3 Q4 Variances vs. Normal All periods recalculated to current 10-year rolling average (2014 – 2023). Numbers may not foot due to rounding. ($ in millions pretax) 2025 Total Weather Impact: $(3) Million 19 2025 gross margin effects of weather


 
Q1 Plant Unit Actual Duration in Days Redhawk CC2 60 Four Corners 4 72 Coal, Nuclear and Large Gas Planned Outages 20 2025 Planned Outage Schedule Q2 Plant Unit Estimated Duration in Days Palo Verde1 1 36 Four Corners 4 11 Q4 Plant Unit Estimated Duration in Days Palo Verde 3 36 1 Outage began at end of Q1


 
2024 Actual3 2025 Guidance3 Operating revenues1 $5.12 billion $5.22 - $5.32 billion Fuel and purchased power expenses1 $1.82 billion $1.93 - $1.97 billion Gross Margin $3.30 billion $3.29 - $3.35 billion Adjustments: Renewable energy and demand side management programs2 $149 million $150 - $160 million Adjusted gross margin $3.15 billion $3.13 - $3.19 billion Operations and maintenance1 $1.17 billion $1.12 - $1.14 billion Adjustments: Renewable energy and demand side management programs2 $141 million $150 - $160 million Adjusted operations and maintenance $1.02 billion $965 - $985 million 21 1 Line items from Consolidated Statements of Income. 2 Includes $3.3M for CCT (Coal Community Transition) in 2024 which is recovered through REAC (Renewable Energy Adjustment Charge). 3 Numbers may not foot due to rounding. Non-GAAP Measure Reconciliation


 
Case/Docket # Q1 Q2 Q3 Q4 2025 Rate Case E-01345A-25-XXXX: APS Rate Case Application to be filed mid-year Power Supply Adjustor (PSA) E-01345A-22-0144: 2025 PSA rate effective March 1 PSA reset to be filed Nov. 26 Transmission Cost Adjustor E-01345A-22-0144: To be filed May 15; effective June 1 Lost Fixed Cost Recovery E-01345A-25-XXXX: 2025 LFCR to be filed July 31 2025 LFCR effective Nov. 1 (if approved) ACC Inquiry Into Nuclear Issues E-00000A-25-0026: ACC Nuclear Issues Workshop to be Held May 21 Resource Comparison Proxy E-01345A-24-0095: Updated RCP calculation filed May 1 RCP Update effective Sep. 1 Test Year Rules (Regulatory Lag) AU-00000A-23-0012: ACC adopted Formula Rates Policy Statement Dec. 13, 2024 2025 Summer Preparedness AU-99999A-25-0004: 2025 Summer Preparedness Workshop held Apr. 24 2026 RES Implementation Plan E-01345A-25-XXXX: 2026 RES Plan due July 1 2026 DSM Implementation Plan E-01345A-25-XXXX: 2026 DSM Plan due May 30 22 2025 Key Regulatory Dates


 
23 Wildfire Mitigation Vegetation management Asset inspection Monitoring and awareness Operational mitigations • Comprehensive right- of-way clearance on maintained cycles • Defensible space around poles (DSAP) • Hazard tree program • Enhanced line patrols • Technology deployments • Drone use • Infra-red scans • Non-reclosing strategy • Public outreach program • Red Flag Warning protocols • Public Safety Power Shutoff (PSPS) • Dedicated team of meteorologists • Advanced fire modeling software • Cameras and weather stations • Federal & state agency partnerships Grid hardening investments • Ongoing distribution system upgrades • Mesh pole wrapping • Expulsion limiting fuses • Steel poles (if truck accessible) Internal: 18-person fire mitigation department engages across entire APS organization to plan and implement initiatives External: Member of 19 fire mitigation industry associations Independent third-party reviews of APS wildfire mitigation plan Our current practices are comprehensive and multi-faceted:


 
24 Consolidated Statistics 3 Months Ended March 31, 2025 2024 Incr (Decr) TOTAL OPERATING REVENUES (Dollars in Millions) Retail Residential $ 449 $ 433 16 Business 525 461 63 Total Retail* 974 894 80 Sales for Resale (Wholesale) 25 27 (2) Transmission for Others 26 28 (2) Other Miscellaneous Services 8 3 5 Total Operating Revenues $ 1,032 $ 952 81 ELECTRIC SALES (GWH) Retail Residential 2,669 2,767 (98) Business 4,038 3,810 228 Total Retail 6,707 6,576 130 Sales for Resale (Wholesale) 1,087 900 187 Total Electric Sales 7,794 7,476 318 RETAIL SALES (GWH) - WEATHER NORMALIZED Residential 2,704 2,767 (63) Business 4,029 3,827 202 Total Retail Sales 6,733 6,594 139 Retail sales (GWH) (% over prior year) 2.1% 5.9% (3.7)% AVERAGE ELECTRIC CUSTOMERS Retail Customers Residential 1,276,813 1,246,840 29,973 Business 145,144 143,677 1,467 Total Retail 1,421,957 1,390,517 31,440 Wholesale Customers 53 58 (5) Total Customers 1,422,010 1,390,576 31,435 Total Customer Growth (% over prior year) 2.3% 1.8% 0.4% RETAIL USAGE - WEATHER NORMALIZED (KWh/Average Customer) Residential 2,118 2,219 (102) Business 27,759 26,634 1,125 * Includes reduction of accrued unbilled revenues in January 2025. Numbers may not foot due to rounding.


 
25 Consolidated Statistics 3 Months Ended March 31, 2025 2024 Incr (Decr) ENERGY SOURCES (GWH) Generation Production Nuclear 2,508 2,549 (41) Coal 1,101 1,990 (889) Gas, Oil and Other 2,222 1,410 812 Renewables 180 230 (51) Total Generation Production 6,010 6,179 (169) Purchased Power Conventional 713 621 92 Resales 40 41 (1) Renewables 1,492 828 664 Total Purchased Power 2,244 1,489 755 Total Energy Sources 8,254 7,668 586 POWER PLANT PERFORMANCE Capacity Factors - Owned Nuclear 101% 102% (1)% Coal 38% 67% (29)% Gas, Oil and Other 28% 18% 10% Solar 20% 28% (8)% System Average 42% 44% (1)% 3 Months Ended March 31, 2025 2024 Incr (Decr) WEATHER INDICATORS - RESIDENTIAL Actual Cooling Degree-Days - - - Heating Degree-Days 406 476 (70) Average Humidity 0% 0% 0% 10-Year Averages (2014 - 2023) Cooling Degree-Days - - - Heating Degree-Days 445 445 Average Humidity 0% 0% - Numbers may not foot due to rounding.