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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
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
226.1K MWh
Latest Month
2.4M MWh
Annual Generation
42.3%
Capacity Factor
CO₂ Intensity
2217 lb/MWh
NOx
3 lb/MWh
SO₂
Steam turbine · South Carolina Generating Company, Inc. · Data from 2023–2024
$1,220/kW
Installed Cost
$-13/kW
Annual CapEx
$63.9/MWh
Operating Cost
This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
Last updated 2026-04-09
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ask pi about WilliamsDominion Energy South Carolina (SCEG)
Grid Voltage
230.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.522 lb/MWh
CH₄
0.253 lb/MWh
N₂O
0.037 lb/MWh
Capacity Factor
34.5%
Annual Net Gen
1994 GWh
CO₂eq
2233 lb/MWh
Subregion
SERC Virginia/Carolina