SPIRIT MOUND
OperatingOil power plant
- Capacity
- 135 MW
- Primary fuel
- Oil
- County
- Clay County
- Operator
- BASIN ELECTRIC POWER COOP
- Status
- Operating
- Commissioned
- 1978
- EIA plant ID
- 6092
- Coordinates
- 42.8977, -96.9906
SPIRIT MOUND, a 135 MW Oil power plant in Clay County, South Dakota. Operated by BASIN ELECTRIC POWER COOP, commissioned 1978.
Weather peril exposure
SPIRIT MOUND is a 135 MW oil power plant in Clay County, SD, operated by BASIN ELECTRIC POWER COOP, commissioned in 1978. Clay County carries high modeled catastrophe exposure in the FEMA National Risk Index, scoring 3.7 of 5 at the 69th national percentile. Tornado is the leading peril, rated Relatively Low by FEMA at the 100th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to an oil plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Clay County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Tornado | Relatively Low | 100th | 5.0 of 5 | 0.35 |
| Lightning | Relatively Low | 97th | 4.9 of 5 | 39.3 |
| Heat wave | Very Low | 95th | 4.8 of 5 | 6.6 |
| Winter weather | Relatively Moderate | 94th | 4.8 of 5 | 15.4 |
| Ice storm | Relatively Moderate | 73rd | 3.9 of 5 | 0.95 |
| Hail | Relatively Low | 71st | 3.8 of 5 | 6.5 |
| Strong wind | Relatively Low | 63rd | 3.5 of 5 | 4.0 |
| Wildfire | Very Low | 60th | 3.4 of 5 | <0.01 |
| Riverine flooding | Very Low | 59th | 3.3 of 5 | 2.1 |
| Earthquake | Very Low | 15th | 1.6 of 5 | <0.01 |
Perils not assessed in Clay 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 |
|---|---|
| Hurricane | FEMA rating is "Not Applicable" for this county |
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Clay 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.