Columbia Energy Center (SC)
Natural gas power plant · Calhoun County, South Carolina
Details
- Primary fuel
- Natural gas
- Technology
- Natural Gas Fired Combined Cycle
- Operator
- Dominion Energy South Carolina, Inc
- County
- Calhoun County
- Generating units
- 3
- Share of state capacity
- 2.45%
- Rank among natural gas plants in South Carolina
- #7 of 20
- EIA plant code
- 55386
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| ST1 | Natural Gas Fired Combined Cycle | 275 MW | 240 MW | 2004 | Operating |
| CT1 | Natural Gas Fired Combined Cycle | 197 MW | 186 MW | 2004 | Operating |
| CT2 | Natural Gas Fired Combined Cycle | 197 MW | 186 MW | 2004 | 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
| H B Robinson | Nuclear | 769 MW |
| Urquhart | Natural gas | 759 MW |
| Williams | Coal | 660 MW |
| Fairfield Pumped Storage | Hydro | 587 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 669 MW solar plant and a 669 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