How big is Oneta Energy Center?

Oneta Energy Center reports 1,214 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.

What kind of plant is Oneta Energy Center?

Oneta Energy Center is a Natural Gas Fired Combined Cycle facility in Wagoner County, OK, participating in the SPP market.

Where is Oneta Energy Center located?

Oneta Energy Center is in Wagoner County, OK, inside the SPP balancing area.

Who operates Oneta Energy Center?

Oneta Energy Center is operated by Oneta Power LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Oneta Energy Center generate?

Oneta Energy Center reported 4,290.6 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

How does Oneta Energy Center compare to other plants?

By capacity, Oneta Energy Center ranks #59 of 540 operating plants of the same technology nationally. It ranks #3 of 12 in OK.

Oneta Energy Center — 1,214 MW gas plant, Wagoner County, OK

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Oneta Energy Center — 1,214 MW gas plant, Wagoner County, OK · Ask the Grid

Generation and physical site

EIA plant 55225 · Inventory for Aug 2026.

Reported operating nameplate by technology

Natural gas: 1,214 MW

Operating generators only. Battery power is in MW; stored energy is in MWh. These ratings do not establish a shared export limit.

Generator records (6)

EIA generator status and nameplate capacity for Oneta Energy Center
Generator	Technology	Status	Power (MW)	Energy (MWh)
CTG1	Natural Gas Fired Combined Cycle	Operating	176	Unknown
CTG2	Natural Gas Fired Combined Cycle	Operating	176	Unknown
CTG3	Natural Gas Fired Combined Cycle	Operating	176	Unknown
CTG4	Natural Gas Fired Combined Cycle	Operating	176	Unknown
STG1	Natural Gas Fired Combined Cycle	Operating	255	Unknown
STG2	Natural Gas Fired Combined Cycle	Operating	255	Unknown

Physical map location · OpenStreetMap: 36.01167, -95.69615
Filed location · EIA: 36.01190, -95.69670

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Aug 2026
EIA retrieved: Oct 10, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Jun 29, 2024
Map prepared: Oct 10, 2026
Field verification: Not reported

Reporting month describes the inventory. Retrieval and map preparation describe processing; an OSM edit does not establish an in-service date.

EIA source inventory

Units and generators

Operating generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
CTG1	176 MW 149.3 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Jul 2002	Operating
CTG2	176 MW 149.3 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Jul 2002	Operating
CTG3	176 MW 149.3 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Jun 2003	Operating
CTG4	176 MW 149.3 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CT	Jun 2003	Operating
STG1	255 MW 244.6 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Jul 2002	Operating
STG2	255 MW 244.6 MW summer	Natural Gas Fired Combined Cycle Natural Gas · CA	Jun 2003	Operating

Oneta Energy Center

Overview

Infrastructure record

Oneta Energy Center

Overview

Infrastructure record

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Structured profile

Generation and physical site

Reported operating nameplate by technology

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Performance

Peer context

Monthly generation

Grid and market context

Nearby substations

Commercial, land, and environmental record

Transactions and agreements

Related parties and identifiers

Parties and identifiers

Reporting portfolio

Timeline and sources

Project timeline

Sources

Common questions about Oneta Energy Center