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

1 GW of nameplate capacity across 8 units, as of the EIA-860M release for 2026-07.

EIA-860M names Calpine Mid-Atlantic Generation 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 Hay Road LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Calpine Mid-Atlantic Generation 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 "Hay Road LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Hay Road still running?

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

Hay Road

Hay Road is a 1 GW natural gas power plant in New Castle County, Delaware, operated by Calpine Mid-Atlantic Generation LLC. EIA-860M lists 8 generating units here, inside PJM. Its units entered service between 1989 and 2002.

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: 1,098.2 MW; 1,128 MW net summer
Generating units: 8
In service: 1989–2002
EIA plant ID: 7153

Where it is

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County: New Castle County, Delaware
Coordinates: 39.7436, -75.5072
Balancing authority: PJM
Sector: IPP Non-CHP

Units, technology and status

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

Every plant Calpine Mid-Atlantic Generation LLC reports to EIA →

Hay Road: FAQ

Where is Hay Road?: In New Castle County, Delaware (DE). 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 Hay Road?: 1 GW of nameplate capacity across 8 units, as of the EIA-860M release for 2026-07.
Who owns Hay Road?: EIA-860M names Calpine Mid-Atlantic Generation 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 Hay Road LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Calpine Mid-Atlantic Generation 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 "Hay Road LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Hay Road still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.