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 Christiana?

55 MW of nameplate capacity across 2 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 Christiana 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 "Christiana LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Christiana still running?

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

Christiana

Christiana is a 55 MW oil-fired power plant in New Castle County, Delaware, operated by Calpine Mid-Atlantic Generation LLC. EIA-860M lists 2 generating units here, inside PJM. Its units entered service in 1973.

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: 55 MW; 50 MW net summer
Generating units: 2
In service: 1973
EIA plant ID: 591

Where it is

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County: New Castle County, Delaware
Coordinates: 39.7302, -75.5371
Balancing authority: PJM
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Calpine Mid-Atlantic Generation LLC
Primary energy source: Petroleum
Technologies: Petroleum Liquids
Status: Standby/Backup

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

Christiana: FAQ

Where is Christiana?: 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 Christiana?: 55 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
Who owns Christiana?: 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 Christiana 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 "Christiana LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Christiana still running?: EIA-860M files it as "Standby/Backup" for 2026-07. Statuses change monthly, and this page follows the monthly release.