Exhibit 99.01

OGEエナジー社、2025年第3四半期決算を発表

オクラホマシティ発 - 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9月30日に終了した3ヵ月間の希薄化後1株当たり利益が1.14ドル（2024年第3四半期は1.09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であるショーン・トラウスキーは、「当社の第3四半期の業績は、事業の強さとチームのコミットメントを実証するものです。「約550MWの新規天然ガスタービンを建設中であり、さらに計画中であることから、地域の増大するエネルギー需要に積極的に対応するとともに、顧客には全米最低水準の料金を維持しています。

Third Quarter 2025 results

OG&E の第 3 四半期の純利益は、前年同期の 2 億 2,500 万ドル（希薄化後 1 株当たり 1.12 ドル）に対し、2 億 4,290 万ドル（希薄化後 1 株当たり 1.20 ドル）でした。純利益の増加は、主に設備投資の回収が増加したことによるものですが、運転・保守費用、法人税費用の増加、天候の悪化により一部相殺されました。

その他の事業では、2024年同期が630万ドル（希薄化後1株当たり0.03ドル）の損失であったのに対し、第3四半期は1,160万ドル（希薄化後1株当たり0.06ドル）の損失となった。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エナジーの純利益は、前年同期の2億1,870万ドル（希薄化後1株当たり1.09ドル）の利益に対し、第3四半期は2億3,130万ドル（希薄化後1株当たり1.14ドル）となった。

2025 Outlook

OGEエナジーの2025年連結利益ガイダンスは、当初の2025年利益ガイダンスの範囲である平均希薄化後一株当たり2.21ドルから2.33ドルの上半分となる見通しである。このガイダンスは、特に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は前年比で天候による収益の季節性が大きい。OGEエナジーの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。

Conference Call Webcast

OGE Energy Corp.は2025年10月29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。

Some of the matters discussed 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. 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, adjustments in market pricing mechanisms by the SPP or allocation of transmission upgrade costs; 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, 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 the Company's 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 the Company's 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 September 30, 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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