Exhibit 99.01

OGE Energy Corp. reports first quarter 2024 results

OKLAHOMA CITY — OGE Energy Corp. (NYSE: OGE), the parent company of Oklahoma Gas and Electric Company ("OG&E"), today reported earnings of $0.09 per diluted share during the three months that ended March 31, 2024, compared to $0.19 per diluted share in the same period 2023.

•OG&E, a regulated electric company, contributed earnings of $0.12 per diluted share in the first quarter, compared to earnings of $0.20 per diluted share in the first quarter 2023.

•Other operations, which includes the holding company, contributed a loss of $0.03 per diluted share compared to a loss of $0.01 per diluted share in the first quarter 2023.

“A solid start to the year has us on pace to achieve our 2024 targets” said Sean Trauschke, Chairman, President and CEO of OGE Energy Corp. “Our relentless focus on affordability for our customers combined with strong operational execution and continued demand growth translates to a stronger, smarter electric grid and a more reliable energy future."

First Quarter 2024 results

OG&E contributed net income of $25.2 million, or $0.12 per diluted share, in the first quarter compared to $39.8 million, or $0.20 per diluted share, in the same period 2023. The decrease in net income was primarily due to higher depreciation and interest expense on a growing asset base. These items were partially offset by higher operating revenues driven by strong weather-normalized load growth of over four percent.

Other Operations resulted in a loss of $6.6 million, or $0.03 per diluted share, in the first quarter compared to a loss of $1.5 million, or $0.01 per diluted share, in the same period 2023. The increase in net loss was primarily due to higher interest expense related to increased short-term debt.

OGE Energy's net income was $18.6 million or $0.09 per diluted share in the first quarter, compared to earnings of $38.3 million, or $0.19 per diluted share, in the same period 2023.

2024 Outlook

OGE Energy's 2024 earnings guidance remains unchanged and is projected to be $2.12 per average diluted share, within a range of $2.06 to $ 2.18 per average diluted share. The Company forecasts earnings for OG&E, the electric company, of $2.22 per average diluted share and earnings for the holding company of a loss of approximately $0.10 per average diluted share. The guidance assumes, among other things, approximately 201.5 million average diluted shares outstanding and normal weather for the remainder of the year. OG&E has significant seasonality in its earnings due to weather on a year over year basis.

See OGE Energy’s 2023 Form 10-K for other key factors and assumptions underlying its 2024 guidance.

Conference Call Webcast

OGE Energy Corp. will host an earnings and business update conference call on Wednesday, May 1, 2024, at 8 a.m. CDT. The conference will be available through the Investor Center at www.oge.com.

OGE Energy Corp. is the parent company of OG&E, a regulated electric company with approximately 900,000 customers in Oklahoma and western Arkansas.

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 and its subsidiary 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 losing control of our assets and potential ransoms, and other catastrophic events; 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, rising interest rates, supply chain disruptions, economic recessions, pandemic health events 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, 2024; 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, 2023.

Note: Consolidated Statements of Income for OGE Energy Corp., Statements of Income and Comprehensive Income for Oklahoma Gas & Electric Company, and Financial and Statistical Data for Oklahoma Gas & Electric Company attached.

OGE ENERGY CORP.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME

(Unaudited)

	Three Months Ended
	March 31,
(In millions, except per share data)	2024			2023
OPERATING REVENUES
Revenues from contracts with customers	$	582.6		$	544.6
Other revenues		14.2			12.6
Operating revenues		596.8			557.2
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE		232.2			200.6
OPERATING EXPENSES
Other operation and maintenance		132.4			130.4
Depreciation and amortization		129.2			121.2
Taxes other than income		29.0			28.5
Operating expenses		290.6			280.1
OPERATING INCOME		74.0			76.5
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction		4.7			4.5
Other net periodic benefit income		1.7			1.5
Other income		4.5			16.9
Other expense		(4.5	)		(6.5	)
Net other income		6.4			16.4
INTEREST EXPENSE
Interest on long-term debt		52.0			48.1
Allowance for borrowed funds used during construction		(3.4	)		(2.1	)
Interest on short-term debt and other interest charges		11.6			1.8
Interest expense		60.2			47.8
INCOME BEFORE TAXES		20.2			45.1
INCOME TAX EXPENSE		1.6			6.8
NET INCOME	$	18.6		$	38.3
BASIC AVERAGE COMMON SHARES OUTSTANDING		200.4			200.2
DILUTED AVERAGE COMMON SHARES OUTSTANDING		200.6			200.8
BASIC EARNINGS PER AVERAGE COMMON SHARE	$	0.09		$	0.19
DILUTED EARNINGS PER AVERAGE COMMON SHARE	$	0.09		$	0.19

OKLAHOMA GAS AND ELECTRIC COMPANY

CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME

(Unaudited)

	Three Months Ended
	March 31,
(In millions)	2024			2023
OPERATING REVENUES
Revenues from contracts with customers	$	582.6		$	544.6
Other revenues		14.2			12.6
Operating revenues		596.8			557.2
FUEL, PURCHASED POWER AND DIRECT TRANSMISSION EXPENSE		232.2			200.6
OPERATING EXPENSES
Other operation and maintenance		132.4			131.5
Depreciation and amortization		129.2			121.2
Taxes other than income		29.0			27.1
Operating expenses		290.6			279.8
OPERATING INCOME		74.0			76.8
OTHER INCOME (EXPENSE)
Allowance for equity funds used during construction		4.7			4.5
Other net periodic benefit income		1.8			1.6
Other income		2.0			10.1
Other expense		(1.9	)		(0.9	)
Net other income		6.6			15.3
INTEREST EXPENSE
Interest on long-term debt		51.1			46.5
Allowance for borrowed funds used during construction		(3.4	)		(2.1	)
Interest on short-term debt and other interest charges		3.7			1.3
Interest expense		51.4			45.7
INCOME BEFORE TAXES		29.2			46.4
INCOME TAX EXPENSE		4.0			6.6
NET INCOME	$	25.2		$	39.8
Other comprehensive income, net of tax		—			—
COMPREHENSIVE INCOME	$	25.2		$	39.8

OKLAHOMA GAS AND ELECTRIC COMPANY

FINANCIAL AND STATISTICAL DATA

	Three Months Ended
	March 31,
(Dollars in millions)	2024		2023
Operating revenues by classification:
Residential	$	228.1	$	211.7
Commercial		153.4		136.2
Industrial		54.2		54.4
Oilfield		50.1		48.4
Public authorities and street light		52.3		46.2
System sales revenues		538.1		496.9
Provision for tax refund		—		1.4
Integrated market		15.0		12.7
Transmission		35.6		35.2
Other		8.1		11.0
Total operating revenues	$	596.8	$	557.2
MWh sales by classification (In millions)
Residential		2.3		2.2
Commercial		2.1		1.9
Industrial		1.0		1.0
Oilfield		1.1		1.1
Public authorities and street light		0.7		0.7
System sales		7.2		6.9
Integrated market		0.2		0.1
Total sales		7.4		7.0
Number of customers		899,871		890,413
Weighted-average cost of energy per kilowatt-hour (In cents)
Natural gas		3.483		4.234
Coal		3.100		3.380
Total fuel		3.238		3.789
Total fuel and purchased power		2.984		2.721
Degree days (A)
Heating - Actual		1,695		1,692
Heating - Normal		1,887		1,887
Cooling - Actual		12		6
Cooling - Normal		10		10

(A)Degree days are calculated as follows: The high and low degrees of a particular day are added together and then averaged. If the calculated average is above 65 degrees, then the difference between the calculated average and 65 is expressed as cooling degree days, with each degree of difference equaling one cooling degree day. If the calculated average is below 65 degrees, then the difference between the calculated average and 65 is expressed as heating degree days, with each degree of difference equaling one heating degree day. The daily calculations are then totaled for the particular reporting period. The calculation of heating and cooling degree normal days is based on a 30-year average and updated every ten years.