ALLEN STEAM PLANT
OperatingCoal power plant
- Capacity
- 1,611 MW
- Primary fuel
- Coal
- County
- Shelby County
- Operator
- TENNESSEE VALLEY AUTHORITY
- Status
- Operating
- Commissioned
- 1971
- EIA plant ID
- 3393
- Generators
- 23
- Net generation (2024)
- 6,401 GWh
- Capacity factor (2024, EIA nameplate)
- 41%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 35.0739, -90.1488
ALLEN STEAM PLANT, a 1,611 MW Coal power plant in Shelby County, Tennessee. Operated by TENNESSEE VALLEY AUTHORITY, commissioned 1971.
How ALLEN STEAM PLANT compares
With 1,611 MW of capacity, ALLEN STEAM PLANT ranks 7th among the 53 operating power plants Bywatts maps in Tennessee and 4th of the 7 operating Coal plants in the state. It accounts for about 17% of Tennessee's operating Coal capacity and 8.0% of all operating capacity in the state. Nationally it is the 65th-largest of the 324 operating Coal plants in the database. Commissioned in 1971, it is newer than 54% of the 53 operating Tennessee plants with a recorded commissioning year. Its operator, TENNESSEE VALLEY AUTHORITY, runs 32 operating plants in Tennessee totaling 19,142 MW.
Under the same EIA plant code, EIA-860 lists 23 generators at the site with 1,792 MW of nameplate capacity (this page's HIFLD capacity figure is 1,611 MW). Net generation was 6,401 GWh in 2024 (a 41% capacity factor), up 18% from 2022. Its generators came online between 1971 and 2018.
Grid neighborhood
The nearest named substation is SOUTHHAVEN, about 7.3 miles away; the closest transmission line found within 10 miles is a 161 kV line owned by TENNESSEE VALLEY AUTHORITY, under 0.1 miles away. One other operating power plant sits within 25 miles: TVA SOUTHAVEN COMBINED CYCLE (904 MW, Natural Gas). Within 50 miles is one mapped data center, Level(3) Memphis in Memphis, about 12.7 miles away.
Computed by Bywatts from HIFLD power plant, substation and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology
Weather peril exposure
ALLEN STEAM PLANT is a 1,611 MW coal power plant in Shelby County, TN, operated by TENNESSEE VALLEY AUTHORITY, commissioned in 1971. Shelby County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.4 of 5 at the 9th national percentile. Earthquake is the leading peril, rated Relatively High by FEMA at the 95th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a coal plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Shelby County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively High | 95th | 4.8 of 5 | <0.01 |
| Tornado | Very High | 84th | 4.4 of 5 | 0.51 |
| Riverine flooding | Relatively High | 40th | 2.6 of 5 | 5.2 |
| Wildfire | Relatively Low | 37th | 2.5 of 5 | <0.01 |
| Ice storm | Relatively High | 35th | 2.4 of 5 | 1.1 |
| Heat wave | Relatively High | 35th | 2.4 of 5 | 21.7 |
| Hurricane | Relatively Low | 29th | 2.2 of 5 | 0.02 |
| Winter weather | Relatively High | 17th | 1.7 of 5 | 5.3 |
| Lightning | Relatively High | 13th | 1.5 of 5 | 59.9 |
| Strong wind | Relatively High | 13th | 1.5 of 5 | 1.3 |
| Hail | Very Low | 1st | 1.1 of 5 | 3.1 |
Perils not assessed in Shelby County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Shelby County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.