Checked
Grant County, SD Energy
Electric utilities, power plants and charging stations in Grant County, South Dakota.
- South Dakota home electricity
- 15.37¢/kWh
- July 2026
- Regular gas, region
- $4.15/gal
- Midwest (PADD 2)
- Electric utilities
- 7
- Serving Grant County
Electric utilities serving Grant County
As reported to EIA for 2025. A utility may serve only part of the county. Customers and prices are for its whole South Dakota service area
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| Utility | Customers in state | Home price | Home bill |
|---|---|---|---|
| Otter Tail Power CoInvestor Owned | 12,027 | 11.42¢/kWh | $123/mo |
| Montana-Dakota Utilities CoInvestor Owned | 8,444 | 12.99¢/kWh | $111/mo |
| H-D Electric Coop IncCooperative | 3,873 | Not reported | Not reported |
| Whetstone Valley Elec Coop IncCooperative | 3,698 | Not reported | Not reported |
| Codington-Clark Elec Coop, IncCooperative | 3,494 | Not reported | Not reported |
| City of Big Stone City - (SD)Municipal | 401 | Not reported | Not reported |
| WAPA-- Western Area Power AdministrationFederal | 25 | Not reported | Not reported |
Alternative fuel stations
| Fuel | Stations |
|---|---|
| Ethanol (E85) | 2 |
| Propane (autogas) | 1 |
Power plants in Grant County
1.1 GW of operating capacity
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| Plant | Fuel | Capacity |
|---|---|---|
| Big Stone | Coal | 451 MW |
| Dakota Range Wind | Wind | 304 MW |
| Crowned Ridge Wind Energy Center | Wind | 200 MW |
| Dakota Range III Wind Project | Wind | 154 MW |
| Valley Queen Cheese | Petroleum | 4.5 MW |
| State Auto Insurance | Petroleum | 1.7 MW |
Electricity rates and gas prices are state or regional averages. Utility service areas come from EIA Form 861 and are listed by county, so a utility listed here may not serve every address in the county.
Frequently asked questions
- What electric company serves Grant County?
- Otter Tail Power Co, Montana-Dakota Utilities Co, H-D Electric Coop Inc and 4 more report serving Grant County to EIA. Check your bill or address with the utility to confirm which one serves you.
- Are there power plants in Grant County?
- Yes. Grant County has 6 operating power plants with 1.1 GW of capacity. The largest is Big Stone (451 MW, coal).