659.7 MW Bit. Coal operating in Berkeley, SC — Dominion Energy South Carolina
659.7 MW
Nameplate Capacity
1
Generators
unit
Conventional Steam Coal
Technology
1973
Operating Since
Coordinates
33.0158, -79.9297
County
Berkeley, SC
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | South Carolina Genertg Co, Inc | — | — |
| Owner(s) | South Carolina Genertg Co, Inc | — | — |
| Status | Operating | — | — |
The Williams power plant is a 659.7 MW coal-fired generating station located in Berkeley County, South Carolina. The plant began operating in 1973 and utilizes conventional steam coal technology. It is owned and operated by South Carolina Generating Company, Inc. The plant has one generator. Williams operates within the Dominion Energy South Carolina balancing authority and the SERC NERC region.
In the most recent year of record, the plant generated 2,447,008 MWh of electricity, resulting in a capacity factor of 42.3%. The plant's installed cost was $1232.29 per kW, according to FERC data. Williams is the fourth-largest power plant in South Carolina, and ranks 38th out of 50 coal plants nationally.
Generated from EIA, GEM, and public data sources
NERC Region
SERC
Balancing Authority
Dominion Energy South Carolina
Grid Voltage
230 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
226.1K MWh
Latest Month
2.4M MWh
Annual Generation
42.3%
Capacity Factor
$1,220/kW
Installed Cost
$63.9/MWh
Operating Cost
South Carolina Generating Company, Inc.
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
Last updated 2026-03-26
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