5th largest plant in Tennessee · 106th nationally
Allen is a natural gas power plant in Tennessee with a nameplate capacity of 1,792 MW. It generates roughly 5.3M MWh per year — enough to power about 507,933 average U.S. homes.
Its capacity factor of 34% reflects intermittent or peaking operation. At 800 lb CO₂/MWh, its emission rate sits below the national grid average of roughly 800 lb/MWh.
Ghost bars are each month's theoretical maximum (1,792 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 | Allen |
|---|---|
| Operator | Tennessee Valley Authority |
| City | Memphis |
| County | Shelby County |
| State | Tennessee |
| ZIP | 38109 |
| Coordinates | 35.07409, -90.14868 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| STG1 | Natural Gas Fired Combined Cycle | Natural Gas | 477 MW | Operating | 2018 |
| CTG1 | Natural Gas Fired Combined Cycle | Natural Gas | 347 MW | Operating | 2018 |
| CTG2 | Natural Gas Fired Combined Cycle | Natural Gas | 347 MW | Operating | 2018 |
| 1 | Conventional Steam Coal | Subbituminous Coal | 330 MW | Retired | 1959 |
| 2 | Conventional Steam Coal | Subbituminous Coal | 330 MW | Retired | 1959 |
| 3 | Conventional Steam Coal | Subbituminous Coal | 330 MW | Retired | 1959 |
| G17 | Petroleum Liquids | Distillate Oil | 59.6 MW | Operating | 1972 |
| G18 | Petroleum Liquids | Distillate Oil | 59.6 MW | Operating | 1972 |
| G19 | Petroleum Liquids | Distillate Oil | 59.6 MW | Operating | 1972 |
| G20 | Petroleum Liquids | Distillate Oil | 59.6 MW | Operating | 1972 |
| G10 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| G11 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| G12 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| G13 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| G14 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| G15 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| G16 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT1 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT2 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT3 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT4 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT5 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT6 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT7 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT8 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| GT9 | Petroleum Liquids | Distillate Oil | 23.9 MW | Operating | 1971 |
| CO₂ | 2.1M metric tons |
|---|---|
| SO₂ | 13 metric tons |
| NOₓ | 236 metric tons |
| CO₂ Rate | 800 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.