Oneta Power LLC - Wagoner County - SPP
Oneta Energy Center is a 1,214 MW natural-gas-fired combined-cycle power plant in Wagoner County, Oklahoma, near Broken Arrow. Commissioned in July 2002 with a second block entering operation in June 2003, the plant is operated by Oneta Power LLC and owned by Argo Infrastructure Partners LP. Oneta is classified as an exempt wholesale generator and independent power producer.
Answers use this researched asset profile with live SPP data. Ask about ownership, equipment, project history, or current grid context.
Live SPP public data · answers can be wrong, verify against source data or the ISO.
Canonical EIA plant baseline.
plant-55225
Similar plants ranked by technology, capacity, and distance.
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 |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Project milestones and public references behind the asset profile.
EIA-860 lists generator CTG1, generator CTG2, generator STG1 with this operating date.
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 |
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
EIA-860 lists generator CTG3, generator CTG4, generator STG2 with this operating date.
LS Power completed the acquisition of a six-facility natural-gas generation portfolio from Calpine Corporation for $1.57 billion plus working-capital adjustments. Oneta Energy Center was one of the six facilities in the portfolio.
LS Power announced an agreement to sell Oneta Energy Center and the Carville Energy Center to an investment vehicle managed by Argo Infrastructure Partners. The sale was expected to close in the fourth quarter of 2019 subject to regulatory approvals.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Oneta Energy Center has a reported capacity of 1,214 MW. Source: EIA Form 860M.
Oneta Energy Center is a Natural Gas Fired Combined Cycle facility in Wagoner County, OK, participating in the SPP market.
Oneta Energy Center is in Wagoner County, OK, inside the SPP balancing area.
Oneta Energy Center is operated by Oneta Power LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Oneta Energy Center reported 4,426.4 GWh over the twelve months to 2026-04. Figures are net generation as filed to EIA-923.
By capacity, Oneta Energy Center ranks #59 of 538 operating plants of the same technology nationally. It ranks #3 of 12 in OK.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.