Guernsey Power Station is a natural gas-fired power facility with 2,055 MW of EIA-reported nameplate capacity in Guernsey County, Ohio, registered as EIA Plant ID 62949. Talen Energy is the current owner; Guernsey Power Station LLC is the registered plant entity or operator. The plant's generating configuration is three natural-gas-fired, single-shaft combined-cycle units.
EIA-reported nameplate capacity; other nameplate and seasonal ratings may differ.
Primary generation technology.
Guernsey Power Station LLC · Guernsey County · PJM
Guernsey Power Station is currently operating; a closure or retirement is listed for August 2, 2026.
765 kV · AEP Ohio / Ohio Power Company
Natural Gas Fired Combined Cycle
Guernsey Power Station is currently operating; a closure or retirement is listed for August 2, 2026.
Guernsey Power Station is currently operating; a closure or retirement is listed for August 2, 2026.
765 kV · AEP Ohio / Ohio Power Company
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| GPS1 | 685 MW 597.6 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | Feb 2023 | Operating |
| GPS2 | 685 MW 596 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | Feb 2023 | Operating |
| GPS3 | 685 MW 594.9 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | Apr 2023 | Operating |
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.
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Project milestones and public references behind the asset profile.
Caithness Energy closed $1.6 billion of financing for construction of the fully permitted 1,875-MW combined-cycle natural-gas facility.
PJM
PJM · Guernsey County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Project records report completion in 2022 after construction managed by Caithness Energy and executed by Gemma Power Systems.
EIA-860 lists generator GPS1, generator GPS2 with this operating date.
EIA-860 lists generator GPS3 with this operating date.
GE Vernova announced the start of commercial operation of Caithness Energy's 1,875-MW Guernsey Power Station.
The facility remains listed as operating; no separate retirement or Guernsey-specific repowering milestone is reported.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Guernsey Power Station has a reported capacity of 2,055 MW. Source: EIA Form 860.
Guernsey Power Station is a Natural Gas Fired Combined Cycle facility in Guernsey County, OH, participating in the PJM market.
Guernsey Power Station is in Guernsey County, OH, inside the PJM balancing area.
Guernsey Power Station is operated by Guernsey Power Station LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Guernsey Power Station reported 12,149.8 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
Guernsey Power Station interconnects at Guernsey 765 kV switching station, on the AEP Ohio / Ohio Power Company system.
By capacity, Guernsey Power Station ranks #7 of 538 operating plants of the same technology nationally. It ranks #1 of 14 in OH.
