Press Release

FERGUS FALLS, Minnesota - Otter Tail Corporation (Nasdaq: OTTR) today announced financial results for the quarter ended March 31, 2025.

•Produced diluted earnings per share of $1.62 in the first quarter of 2025.

•Affirming consolidated 2025 earnings guidance range of $5.68 to $6.08.

•Paid quarterly dividend of $0.525 per share, a 12% increase from last year.

•Available liquidity of $607 million as of March 31, 2025.

“Overall, we are pleased with our first quarter financial results,” said President and CEO Chuck MacFarlane. “Each of our businesses are responding to the dynamic market conditions while remaining focused on serving our customers and effectively executing on our near-term strategies. Collectively, we produced earnings of $68.1 million, or $1.62 per diluted share, in line with our expectations and a good start to the year.

“We are actively monitoring the evolving tariff landscape and resulting impact on our business. While there is uncertainty regarding the extent and duration of the economic impacts, with the strength of our balance sheet, including ample liquidity, and an experienced management team, we are well positioned to weather this period of economic turbulence.

“Otter Tail Power finalized its fully settled North Dakota general rate case with a final compliance filing and implementation of new base rates in the first quarter. Overall, we view the outcome of the case to be constructive. In addition, we continue to execute on our investment and regulatory priorities, including development work on our renewable generation and large transmission projects. Finally, we achieved an important milestone in adding a new large customer to our system, reaching an agreement to provide service to a developer locating next to our Big Stone Plant. We are now working to receive regulatory approval for this load along with other steps necessary to commence service.

“Our Manufacturing segment continues to navigate softening end market demand in our served markets. In addition, domestic steel suppliers have announced price increases following the implementation of tariffs on imported steel. While our business has not been significantly impacted by metal price changes to date, we are monitoring for potential future impacts as higher priced metal enters the market. We completed the expansion of our BTD manufacturing facility in Georgia. The project was completed on time and on budget and we are currently ramping up to full production.

“Our Plastics segment continues to benefit from strong product demand and increased sales volumes while product prices continue to decline in line with our expectations. We are pleased with the first quarter performance of our new large diameter production line at Vinyltech, providing us the capability to better serve customers in our southwest market.

“We are maintaining our consolidated 2025 diluted earnings-per-share guidance range of $5.68 to $6.08, which we expect to produce a consolidated return on equity in the range of 13.8% to 14.6%.

“While our businesses are facing uncertainty in the current environment, we remain confident in our long-term strategy of investing in rate base growth opportunities at Otter Tail Power, which we expect to produce a compounded annual growth rate in rate base of 9 percent from 2025 to 2029, and the benefits of a diversified business model to generate incremental earnings and cash flows to fund our capital investment plan without any external equity needs. Over the long term, we expect this strategy to produce earnings-per-share growth of 6 to 8 percent and a total shareholder return of 9 to 11 percent.”

On May 5, 2025, the corporation’s Board of Directors declared a quarterly common stock dividend of $0.525 per share. This dividend is payable June 10, 2025 to shareholders of record on May 15, 2025.

Our consolidated cash provided by operating activities for the three months ended March 31, 2025 was $39.5 million compared to $71.9 million for the three months ended March 31, 2024, with the decrease primarily due to the timing of fuel cost and rider recoveries from our utility customers, the timing of payments of operating costs in our Electric segment, and a decrease in earnings.

Investing activities for the three months ended March 31, 2025 included capital expenditures of $58.0 million. Capital expenditures during the period were largely within our Electric segment, including investments in our wind repowering, advanced metering infrastructure, and transmission line projects.

Financing activities for the three months ended March 31, 2025 included the issuance of $50.0 million of long-term debt at Otter Tail Power; the proceeds of which were used to repay short-term borrowings, fund capital investments, and support operating activities. Financing activities for the three months ended March 31, 2025 also included net repayments of short-term borrowings totaling $10.8 million and dividend payments of $22.0 million.

As of March 31, 2025, we had $170.0 million and $152.4 million of available liquidity under our Otter Tail Corporation and Otter Tail Power credit facilities, respectively, along with $284.8 million of available cash and cash equivalents, for total available liquidity of $607.2 million.

The following table shows heating degree days as a percent of normal.

			Three Months Ended March 31,
			2025						2024
Heating Degree Days			100.9		%				84.4		%

The following table summarizes the estimated effect on diluted earnings per share of the difference in retail kilowatt-hour (kwh) sales under actual weather conditions and expected retail kwh sales under normal weather conditions for the three months ended March 31, 2025 and 2024.

Operating Revenues increased $8.2 million primarily due to an increase in fuel recovery revenues from an increase in the volume and price of market energy purchases and the impact of favorable weather compared to the same period last year, as the first quarter in 2024 was unseasonably warm in our service territory. Interim revenues in North Dakota increased compared to the same period last year driven by increased customer demand and consumption. These increases in operating revenues were partially offset by a net decrease in rider revenues primarily due to increased production tax credits from our wind generation, which are passed on to customers in the form of lower rates, partially offset by additional recovery of costs associated with our wind repowering projects.

Net Income increased $2.2 million primarily due to the increase in revenues, as described above, partially offset by increased depreciation and interest expense related to capital investments and financing costs associated with our rate base investments.

Operating Revenues decreased $17.7 million primarily due to a 13% decrease in sales volumes, with the most significant declines experienced in the recreational vehicle, agriculture, and construction end markets. Sales volumes have continued to soften due to lower end market demand and inventory management efforts by manufacturers and dealers. A 3% decrease in steel costs, which are passed through to customers, as well as a 1% decrease in scrap revenue also contributed to the decrease in operating revenues.

Net Income decreased $3.7 million primarily due to lower sales volumes and lower scrap metal sales, as described above, as well as a decrease in margins. Decreased profit margins were primarily due to reduced leveraging of fixed manufacturing costs resulting from decreased production and sales volumes. The impacts of decreased operating revenues and profit margins were partially offset by a decrease in general and administrative costs.

Operating Revenues decreased $0.3 million due to an 11% decrease in sales prices compared to the same period last year, continuing the steady decline in product pricing due to continuing changes from peak market conditions in late 2022. The impact of decreased sales prices was largely offset by a 13% increase in sales volumes driven by strong distributor and end market demand coupled with increased production capacity after the completion of our expansion project at Vinyltech in late 2024. Active infrastructure investment and construction across our sales territories have continued to contribute to strong distributor and end market demand.

Net Income decreased $3.3 million primarily due to decreased sales prices, as described above, as well as increased general and administrative expenses, partially offset by decreased PVC resin cost, driven by elevated domestic resin supply.

Net Loss increased $1.4 million primarily due to increased employee benefit expenses, including increases in our employee health insurance claim costs.

We continue to anticipate 2025 diluted earnings per share to be in the range of $5.68 to $6.08. We expect our earnings mix in 2025 to be approximately 39% from our Electric segment and 61% from our Manufacturing and Plastics segments, net of corporate costs. Our anticipated earnings mix in 2025 deviates from our long-term expected earnings mix of 65% Electric / 35% Non-Electric as we expect Plastics segment earnings to remain elevated in 2025 compared to our long-term view of normal earnings for this segment.

The segment components of our 2025 diluted earnings per share guidance compared with actual earnings for 2024 are as follows:

The corporation will host a live webcast on Tuesday, May 6, 2025, at 10:00 a.m. CT to discuss its financial and operating performance.

The presentation will be posted on our website before the webcast. To access the live webcast, go to www.ottertail.com/presentations and select “Webcast.” Please allow time prior to the call to visit the site and download any software needed to listen in. An archived copy of the webcast will be available on our website shortly after the call.

Except for historical information contained here, the statements in this release are forward-looking and made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. The words “anticipate,” “believe,” “can,” “could,” “estimate,” “expect,” “future,” “goal,” “intend,” “likely,” “may,” “opportunity,” “outlook,” “plan,” “possible,” “potential,” “predict,” “probable,” “projected,” “should,” “target,” “will,” “would” and similar words and expressions are intended to identify forward-looking statements. Such statements are based upon the current beliefs and expectations of management. Forward-looking statements made herein, which may include statements regarding 2025 earnings and earnings per share, long-term earnings, earnings per share growth and earnings mix, anticipated levels of energy generation from renewable resources, anticipated reductions in carbon dioxide emissions, future investments and capital expenditures, rate base levels and rate base growth, future raw materials costs, future raw materials availability and supply constraints, future operating revenues and operating results, and expectations regarding regulatory proceedings, as well as other assumptions and statements, involve known and unknown risks and uncertainties that may cause our actual results in current or future periods to differ materially from the forecasted assumptions and expected results.

The Company’s risks and uncertainties include, among other things, uncertainty of future investments and capital expenditures; rate base levels and rate base growth; risks associated with energy markets; the availability and pricing of resource materials; inflationary cost pressures; attracting and maintaining a qualified and stable workforce; changing macroeconomic and industry conditions that impact the demand for our products, pricing and margin; long-term investment risk; seasonal weather patterns and extreme weather events; future business volumes with key customers; reductions in our credit ratings; our ability to access capital markets on favorable terms; assumptions and costs relating to funding our employee benefit plans; our subsidiaries’ ability to make dividend payments; cybersecurity threats or data breaches; the impact of government legislation and regulation including foreign trade policy and environmental; health and safety laws and regulations; changes in tax laws and regulations; the impact of climate change including compliance with legislative and regulatory changes to address climate change; expectations regarding regulatory proceedings, assigned service areas, the construction of major facilities, capital structure, and allowed customer rates; actual and threatened claims or litigation; and operational and economic risks associated with our electric generating and manufacturing facilities. These and other risks are more fully described in our filings with the Securities and Exchange Commission, including our most recently filed Annual Report on Form 10-K, as updated in subsequently filed Quarterly Reports on Form 10-Q, as applicable. Forward-looking statements speak only as of the date they are made, and we expressly disclaim any obligation to update any forward-looking information.

About the Corporation: Otter Tail Corporation, a member of the S&P SmallCap 600 Index, has interests in diversified operations that include an electric utility and manufacturing businesses. Otter Tail Corporation stock trades on the Nasdaq Global Select Market under the symbol OTTR. The latest investor and corporate information is available at www.ottertail.com. Corporate offices are in Fergus Falls, Minnesota, and Fargo, North Dakota.

Investor Contacts:    Beth Eiken, Manager of Investor Relations, (701) 451-3571

Tyler Nelson, VP of Finance and Treasurer, (701) 451-3576

Media Contact:    Stephanie Hoff, Director of Corporate Communications, (218) 739-8535

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