10th largest plant in Mississippi · 424th nationally
Caledonia is a natural gas power plant in Mississippi with a nameplate capacity of 801 MW. It generates roughly 3.9M MWh per year — enough to power about 371,218 average U.S. homes.
Its capacity factor of 56% puts it in the middle range — running steadily but not full-time. At 846 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 (801 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 | Caledonia |
|---|---|
| Operator | Tennessee Valley Authority |
| City | Steens |
| County | Lowndes County |
| State | Mississippi |
| ZIP | 39766 |
| Coordinates | 33.64640, -88.27170 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | Natural Gas | 161 MW | Operating | 2003 |
| CTG2 | Natural Gas Fired Combined Cycle | Natural Gas | 161 MW | Operating | 2003 |
| CTG3 | Natural Gas Fired Combined Cycle | Natural Gas | 161 MW | Operating | 2003 |
| STG1 | Natural Gas Fired Combined Cycle | Natural Gas | 106 MW | Operating | 2003 |
| STG2 | Natural Gas Fired Combined Cycle | Natural Gas | 106 MW | Operating | 2003 |
| STG3 | Natural Gas Fired Combined Cycle | Natural Gas | 106 MW | Operating | 2003 |
| Owner | Location | Share |
|---|---|---|
| Ge Energy Financial Services | Stamford, CT | 10000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| CO₂ | 1.6M metric tons |
|---|---|
| SO₂ | 8 metric tons |
| NOₓ | 151 metric tons |
| CO₂ Rate | 846 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 | Tennessee Valley Authority |
Natural gas plants are the workhorse of the modern grid. Combined-cycle units achieve very high efficiency and can ramp up and down quickly to balance variable renewables. They emit roughly half the CO₂ per MWh of coal and far less of other pollutants, but they still release upstream methane during fuel extraction.