OGE ENERGY CORP

For the period ended Dec 31, 2024. Filed Feb 19, 2025.

About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2024 · Filed Feb 19, 2025

OGE$50.66+0.0%Stored close · as of Nov 9, 2026

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Contents

Item 2. Properties

OG&E owns and operates an interconnected electric generation, transmission and distribution system, located in Oklahoma and western Arkansas, which included 18 generating stations with an aggregate capability of 6,921 MWs at December 31, 2024. The following table presents information with respect to OG&E's electric generating facilities. Unless otherwise indicated, these electric generating facilities are located in Oklahoma.

Station & Unit · YearInstalled · Unit DesignType · FuelCapability · 2024CapacityFactor (A) · UnitCapability(MW) · StationCapability(MW)
Seminole	1		1971	Steam-Turbine	Gas		9.0%	500
	2		1973	Steam-Turbine	Gas		15.8%	513
	3		1975	Steam-Turbine	Gas		28.8%	508	1,521
Muskogee	4		1977	Steam-Turbine	Gas		23.0%	498
	5		1978	Steam-Turbine	Gas		37.7%	491
	6		1984	Steam-Turbine	Coal		11.2%	521	1,510
Sooner	1		1979	Steam-Turbine	Coal		18.8%	519
	2		1980	Steam-Turbine	Coal		20.0%	519	1,038
Horseshoe Lake	5A	(B)	1971	Combustion-Turbine	Gas/Jet Fuel		6.0%	33
	5B	(B)	1971	Combustion-Turbine	Gas/Jet Fuel		3.9%	31
	8		1969	Steam-Turbine	Gas		14.3%	377
	9		2000	Combustion-Turbine	Gas		26.8%	45
	10		2000	Combustion-Turbine	Gas		9.2%	46	532
Redbud (C)	1		2003	Combined Cycle	Gas		45.2%	156
	2		2003	Combined Cycle	Gas		41.2%	154
	3		2003	Combined Cycle	Gas		40.6%	154
	4		2003	Combined Cycle	Gas		48.5%	155	619
Mustang	6		2018	Combustion-Turbine	Gas		—	57
	7		2018	Combustion-Turbine	Gas		0.2%	56
	8		2017	Combustion-Turbine	Gas		17.3%	58
	9		2018	Combustion-Turbine	Gas		21.6%	57
	10		2018	Combustion-Turbine	Gas		30.6%	55
	11		2018	Combustion-Turbine	Gas		30.7%	58
	12		2018	Combustion-Turbine	Gas		—	57	398
McClain (D)	1		2001	Combined Cycle	Gas		42.9%	375	375
Frontier	1		1989	Combined Cycle	Gas		66.4%	126	126
River Valley	1		1991	Steam-Turbine	Coal/Gas		22.1%	161
	2		1991	Steam-Turbine	Coal/Gas		22.6%	160	321
Total Generating Capability (all stations, excluding renewable)						6,440

(A)

2024 Capacity Factor = 2024 Net Actual Generation / (2024 Net Maximum Capacity (Nameplate Rating in MWs) x Period Hours (8,784 Hours)). Capacity Factors are impacted by events that reduce Net Actual Generation such as outages.

(B)

Represents units located at Tinker Air Force Base that are maintained by Horseshoe Lake.

(C)

Represents OG&E's 51 percent ownership interest in the Redbud Plant.

(D)

Represents OG&E's 77 percent ownership interest in the McClain Plant.

In 2024, OG&E retired Unit 7 located at the Horseshoe Lake station.

Renewable · 2024
Station · Year Installed · Location · Number ofUnits · Fuel Capability · Capacity Factor(A) · UnitCapability(MW) · StationCapability(MW)
Crossroads	2011	Canton, OK	98	Wind	15.9%		2.30		228
Centennial	2007	Laverne, OK	80	Wind	16.1%		1.50		120
OU Spirit	2009	Woodward, OK	44	Wind	15.3%		2.30		101
Mustang	2015	Oklahoma City, OK	90	Solar	21.0%	< 0.1		2
Covington	2018	Covington, OK	4	Solar	20.2%		2.5		10
Choctaw Nation	2020	Durant, OK	2	Solar	21.2%		2.5		5
Chickasaw Nation	2020	Davis, OK	2	Solar	23.9%		2.5		5
Branch	2021	Branch, AR	2	Solar	22.6%		2.5		5
Durant 2	2022	Durant, OK	2	Solar	24.0%		2.5		5
Total Generating Capability (renewable)							481

(A)

The following table presents certain operating data relating to the OG&E's electricity transmission and distribution assets at December 31, 2024.

	Oklahoma	Arkansas
Transmission system:
Substations	55	7
Total capacity (million kV-amps)	15.3	2.9
Structure miles - lines	5,208	347
Distribution system:
Substations	351	30
Total capacity (million kV-amps)	11.0	1.0
Structure miles - overhead	29,727	2,810
Miles of underground conduit	3,391	290
Miles of underground conductors	11,863	761

During the three years ended December 31, 2024, both Registrants' gross property, plant and equipment (excluding construction work in progress) additions were $2.9 billion, and gross retirements were $521.6 million. These additions were provided by cash generated from operations, short-term borrowings (through a combination of bank borrowings and commercial paper), long-term borrowings and permanent financings. The additions during this three-year period amounted to 17.6 percent of gross property, plant and equipment (excluding construction work in progress) for both Registrants at December 31, 2024.

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