In Georgetown County, South Carolina (SC). 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 4 units, as of the EIA-860M release for 2026-07.

EIA-860M names South Carolina Public Service Authority 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 Winyah LLC?

Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — South Carolina Public Service Authority 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 "Winyah LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.

Is Winyah still running?

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

Winyah

Winyah is a 1 GW coal power plant in Georgetown County, South Carolina, operated by South Carolina Public Service Authority. EIA-860M lists 4 generating units here. Its units entered service between 1975 and 1981.

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: 1,275.8 MW; 1,130 MW net summer
Generating units: 4
In service: 1975–1981
EIA plant ID: 6249

Where it is

Loading map…

County: Georgetown County, South Carolina
Coordinates: 33.3318, -79.3572
Balancing authority: SC
Sector: Electric Utility

Units, technology and status

Operator of record: South Carolina Public Service Authority
Primary energy source: Coal
Technologies: Conventional Steam Coal
Status: Operating

Every plant South Carolina Public Service Authority reports to EIA →

Winyah: FAQ

Where is Winyah?: In Georgetown County, South Carolina (SC). 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 Winyah?: 1 GW of nameplate capacity across 4 units, as of the EIA-860M release for 2026-07.
Who owns Winyah?: EIA-860M names South Carolina Public Service Authority 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 Winyah LLC?: Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — South Carolina Public Service Authority 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 "Winyah LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
Is Winyah still running?: EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.