In Kent County, Maryland (MD). 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 Rock Hall?

1 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.

EIA-860M names Terraform Arcadia 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 Rock Hall LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Terraform Arcadia 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 "Rock Hall LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Rock Hall still running?

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

Rock Hall

Rock Hall is a 1 MW solar farm in Kent County, Maryland, operated by Terraform Arcadia. EIA-860M lists 1 generating unit here, inside PJM. Its unit entered service in 2012.

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 MW; 1 MW net summer
Generating units: 1
In service: 2012
EIA plant ID: 58241

Where it is

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County: Kent County, Maryland
Coordinates: 39.1444, -76.2316
Balancing authority: PJM
Sector: IPP Non-CHP

Units, technology and status

Operator of record: Terraform Arcadia
Primary energy source: Solar
Technologies: Solar Photovoltaic
Status: Operating

Every plant Terraform Arcadia reports to EIA →

Rock Hall: FAQ

Where is Rock Hall?: In Kent County, Maryland (MD). 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 Rock Hall?: 1 MW of nameplate capacity across 1 unit, as of the EIA-860M release for 2026-07.
Who owns Rock Hall?: EIA-860M names Terraform Arcadia 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 Rock Hall LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Terraform Arcadia 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 "Rock Hall LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Rock Hall still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.