17th largest plant in South Carolina · 549th nationally
Williams is a coal power plant in South Carolina with a nameplate capacity of 660 MW. It generates roughly 2.0M MWh per year — enough to power about 189,910 average U.S. homes.
Its capacity factor of 35% reflects intermittent or peaking operation. At 2217 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (660 MW nameplate × hours in the month). Filled bars are actual net generation reported to EIA Form 923. The gap between them is capacity factor made visible.
| Plant Name | Williams |
|---|---|
| Operator | South Carolina Genertg Co, Inc |
| City | Goose Creek |
| County | Berkeley County |
| State | South Carolina |
| ZIP | 29445 |
| Coordinates | 33.01580, -79.92970 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| ST1 | Conventional Steam Coal | Bituminous Coal | 660 MW | Operating | 1973 |
| 1 | Natural Gas Fired Combustion Turbine | Natural Gas | 26.9 MW | Retired | 1972 |
| 2 | Natural Gas Fired Combustion Turbine | Natural Gas | 26.9 MW | Retired | 1972 |
| CO₂ | 2.2M metric tons |
|---|---|
| SO₂ | 520 metric tons |
| NOₓ | 2.6k metric tons |
| CO₂ Rate | 2217 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | SERC |
|---|---|
| Balancing Authority | Dominion Energy South Carolina |
Coal plants burn pulverized coal to boil water and spin steam turbines. They emit substantial CO₂, SO₂, and NOₓ along with mercury and particulate matter. Modern units include scrubbers and selective catalytic reduction; older units are increasingly being retired or converted to natural gas as economics shift.