Where is York Energy Center?

In York County, Pennsylvania (PA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.

How big is York Energy Center?

1 GW of nameplate capacity across 7 units, as of the EIA-860M release for 2026-07.

Who owns York Energy Center?

EIA-860M names Calpine Mid-Merit LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.

Is this the same as York Energy Center LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Calpine Mid-Merit LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "York Energy Center LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is York Energy Center still running?

EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.

York Energy Center

York Energy Center is a 1 GW natural gas power plant in York County, Pennsylvania, operated by Calpine Mid-Merit LLC. EIA-860M lists 7 generating units here, inside PJM. Its units entered service between 2011 and 2019.

As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m

Nameplate capacity: 1,449.4 MW; 1,404 MW net summer
Generating units: 7
In service: 2011–2019
EIA plant ID: 55524

Where it is

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County: York County, Pennsylvania
Coordinates: 39.7375, -76.3067
Balancing authority: PJM
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Calpine Mid-Merit LLC
Primary energy source: Natural gas
Technologies: Natural Gas Fired Combined Cycle
Status: Operating

Every plant Calpine Mid-Merit LLC reports to EIA →

York Energy Center: FAQ

Where is York Energy Center?: In York County, Pennsylvania (PA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
How big is York Energy Center?: 1 GW of nameplate capacity across 7 units, as of the EIA-860M release for 2026-07.
Who owns York Energy Center?: EIA-860M names Calpine Mid-Merit LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
Is this the same as York Energy Center LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Calpine Mid-Merit LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "York Energy Center LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is York Energy Center still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.