Exhibit 99.01

OGEエナジー社、2025年第1四半期決算を発表

オクラホマシティ - オクラホマ・ガス・アンド・エレクトリック社（以下「OG&E」）の親会社であるOGEエナジー社（NYSE: OGE）は本日、2025年3月31日に終了した3ヵ月間の希薄化後1株当たり利益が0.31ドル（前年同期は0.09ドル）となったと発表した。

「OGEエナジー社の会長兼社長兼CEOのショーン・トラウシュケは、「顧客需要の増加と成長により、第1四半期は好調に推移し、2025年に向けての勢いを維持することができました。「オクラホマ州とアーカンソー州で成長する地域社会を支援するため、当社の信頼性と事業拡大への投資は、悪天候や停電の影響を抑え、すべてのお客様に価値を提供します。

First Quarter 2025 results

OG&E の第 1 四半期の純利益は、前年同期の 2,520 万ドル（希薄化後 1 株当たり 0.12 ドル）に対し、7,100 万ドル（希薄化後 1 株当たり 0.35 ドル）でした。純利益の増加は主に、設備投資の回収と堅調な負荷増加による営業収益の増加、および操業・保守費用の減少によるものですが、法人所得税費用の増加、資産増加に伴う減価償却費および支払利息の増加により一部相殺されました。

その他の事業では、前年同期の 660 万ドル（希薄化後 1 株当たり 0.03 ドル）の損失に対し、第 1 四半期は 830 万ドル（希薄化後 1 株当たり 0.04 ドル）の損失となりました。純損失の増加は主に支払利息の増加によるもので、法人税等調整額の増加により一部相殺された。

OGEエナジーの第1四半期の純利益は6,270万ドル（希薄化後1株当たり0.31ドル）、これに対して2024年同期は1,860万ドル（希薄化後1株当たり0.09ドル）であった。

2025 Outlook

OGEエナジーの2025年連結利益ガイダンスに変更はなく、平均希薄化後1株当たり2.27ドル（平均希薄化後1株当たり2.21ドルから2.33ドルの範囲内）となる見通し。このガイダンスは、特に平均希薄化後発行済み株式数が約2億210万株であること、および年内の天候が平年並みであることを前提としている。OG&Eの収益は、前年比では天候による季節性が大きい。

2025年ガイダンスの基礎となるその他の主な要因と仮定については、OGEエナジーの2024年フォーム10-Kを参照のこと。

Conference Call Webcast

OGE Energy Corp.は2025年4月30日（水）午前8時（米国東部標準時間）より、決算・事業報告電話会議を開催する。この電話会議はインベスターセンター（www.oge.com）でご覧いただけます。

OGE Energy Corp.はOG&Eの親会社であり、オクラホマ州とアーカンソー州西部で約909,000人の顧客を持つ規制対象の電力会社である。

Some of the matters in this news release may contain forward-looking statements that are subject to certain risks, uncertainties and assumptions. Such forward-looking statements are intended to be identified in this document by the words "anticipate," "believe," "estimate," "expect," "forecast," "intend," "objective," "plan," "possible," "potential," "project," "target" and similar expressions. Actual results may vary materially from those expressed in forward looking statements. Factors that could cause actual results to differ materially from the forward-looking statements include, but are not limited to: general economic conditions, including the availability of credit, access to existing lines of credit, access to the commercial paper markets, actions of rating agencies and inflation rates, and their impact on capital expenditures; the ability of the Company to access the capital markets and obtain financing on favorable terms, as well as inflation rates and monetary fluctuations; the ability to obtain timely and sufficient rate relief to allow for recovery of items such as capital expenditures, fuel and purchased power costs, operating costs, transmission costs and deferred expenditures; prices and availability of electricity, coal and natural gas; competitive factors, including the extent and timing of the entry of additional competition in the markets served by the Company, potentially through deregulation; the impact on demand for the Company's services resulting from cost competitive advances in technology, such as distributed electricity generation and customer energy efficiency programs; technological developments, changing markets and other factors that result in competitive disadvantages and create the potential for impairment of existing assets; factors affecting utility operations such as unusual weather conditions; catastrophic weather-related damage; unscheduled generation outages; unusual maintenance or repairs; unanticipated changes to fossil fuel, natural gas or coal supply costs or availability due to higher demand, shortages, transportation problems or other developments; environmental incidents; or electric transmission or gas pipeline system constraints; availability and prices of raw materials and equipment for current and future construction projects; the effect of retroactive pricing of transactions in the SPP markets or adjustments in market pricing mechanisms by the SPP; federal or state legislation and regulatory decisions and initiatives that affect cost and investment recovery, have an impact on rate structures or affect the speed and degree to which competition enters the Company's markets; environmental laws, safety laws or other regulations that may impact the cost of operations, restrict or change the way the Company's facilities are operated or result in stranded assets; the ability of the Company to meet future capacity requirements mandated by the SPP, which could be impacted by future load growth, environmental regulations recently finalized by the EPA, and the availability of resources; changes in accounting standards, rules or guidelines; the discontinuance of accounting principles for certain types of rate-regulated activities; the cost of protecting assets against, or damage due to, terrorism or cyberattacks, including the Company losing control of their assets and potential ransoms, and other catastrophic events; the availability, cost, coverage and terms of insurance; changes in the use, perception or regulation of generative artificial intelligence technologies, which could limit our ability to utilize such technology, create risk of enhanced regulatory scrutiny, generate uncertainty around intellectual property ownership, licensing or use, or which could otherwise result in risk of damage to our business, reputation or financial results; creditworthiness of suppliers, customers and other contractual parties, including large, new customers from emerging industries such as cryptocurrency; social attitudes regarding the electric utility and power industries; identification of suitable investment opportunities to enhance shareholder returns and achieve long-term financial objectives through business acquisitions and divestitures; increased pension and healthcare costs; national and global events that could adversely affect and/or exacerbate macroeconomic conditions, including inflationary pressures, interest rate fluctuations, supply chain disruptions, economic recessions, pandemic health events, tariffs and uncertainty surrounding continued hostilities or sustained military campaigns, and their collateral consequences; costs and other effects of legal and administrative proceedings, settlements, investigations, claims and matters, including, but not limited to those described in the Company's Form 10-Q for the quarter ended March 31, 2025; and other risk factors listed in the reports filed by the Company with the Securities and Exchange Commission, including those listed within the Company's most recent Form 10-K for the year ended December 31, 2024.

注）OGE Energy Corp.の要約連結損益計算書、Oklahoma Gas & Electric Companyの要約損益計算書および包括利益計算書、ならびにOklahoma Gas & Electric Companyの財務・統計データを添付。

OGE ENERGY CORP.

凝縮された連結損益計算書

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