Williams
Coal power plant · Berkeley County, South Carolina
Details
- Primary fuel
- Coal
- Technology
- Conventional Steam Coal
- Operator
- South Carolina Genertg Co, Inc
- County
- Berkeley County
- Generating units
- 1
- Share of state capacity
- 2.42%
- Rank among coal plants in South Carolina
- #4 of 4
- EIA plant code
- 3298
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| ST1 | Conventional Steam Coal | 660 MW | 605 MW | 1973 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in South Carolina
| Urquhart | Natural gas | 759 MW |
| Columbia Energy Center (SC) | Natural gas | 669 MW |
| Fairfield Pumped Storage | Hydro | 587 MW |
| Cope | Natural gas | 417 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 660 MW solar plant and a 660 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All South Carolina power plants · What South Carolina actually generates