14th largest plant in Mississippi · 678th nationally
Attala is a natural gas power plant in Mississippi with a nameplate capacity of 551 MW. It generates roughly 2.9M MWh per year — enough to power about 280,379 average U.S. homes.
Its capacity factor of 61% puts it in the middle range — running steadily but not full-time. At 836 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 (551 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 | Attala |
|---|---|
| Operator | Entergy Mississippi Llc |
| City | Sallis |
| County | Attala County |
| State | Mississippi |
| ZIP | 39160 |
| Coordinates | 33.01470, -89.67530 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| A03 | Natural Gas Fired Combined Cycle | Natural Gas | 198 MW | Operating | 2001 |
| A01 | Natural Gas Fired Combined Cycle | Natural Gas | 177 MW | Operating | 2001 |
| A02 | Natural Gas Fired Combined Cycle | Natural Gas | 177 MW | Operating | 2001 |
| CO₂ | 1.2M metric tons |
|---|---|
| SO₂ | 6 metric tons |
| NOₓ | 114 metric tons |
| CO₂ Rate | 836 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 | Midcontinent Independent Transmission System Operator, Inc.. |
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.