TVA SOUTHAVEN COMBINED CYCLE
OperatingNatural Gas power plant
- Capacity
- 904 MW
- Primary fuel
- Natural Gas
- County
- DeSoto County
- Operator
- TENNESSEE VALLEY AUTHORITY
- Status
- Operating
- Commissioned
- 2003
- EIA plant ID
- 55269
- Coordinates
- 34.9940, -90.0385
TVA SOUTHAVEN COMBINED CYCLE, a 904 MW Natural Gas power plant in DeSoto County, Mississippi. Operated by TENNESSEE VALLEY AUTHORITY, commissioned 2003.
Weather peril exposure
TVA SOUTHAVEN COMBINED CYCLE is a 904 MW natural gas power plant in DeSoto County, MS, operated by TENNESSEE VALLEY AUTHORITY, commissioned in 2003. DeSoto County carries low modeled catastrophe exposure in the FEMA National Risk Index, scoring 1.4 of 5 at the 10th national percentile. Earthquake is the leading peril, rated Relatively Moderate by FEMA at the 94th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
DeSoto County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Earthquake | Relatively Moderate | 94th | 4.8 of 5 | <0.01 |
| Tornado | Relatively High | 86th | 4.5 of 5 | 0.30 |
| Heat wave | Relatively Moderate | 60th | 3.4 of 5 | 21.6 |
| Wildfire | Relatively Low | 59th | 3.4 of 5 | <0.01 |
| Lightning | Relatively High | 53rd | 3.1 of 5 | 62.1 |
| Winter weather | Relatively Low | 42nd | 2.7 of 5 | 4.8 |
| Strong wind | Relatively Moderate | 38th | 2.5 of 5 | 1.3 |
| Hurricane | Very Low | 31st | 2.2 of 5 | 0.03 |
| Ice storm | Relatively Moderate | 22nd | 1.9 of 5 | 1.0 |
| Riverine flooding | Relatively Moderate | 20th | 1.8 of 5 | 2.3 |
| Hail | Relatively Low | 4th | 1.2 of 5 | 2.9 |
Perils not assessed in DeSoto 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 DeSoto 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.