Oahe Electric Coop Inc
Cooperative electric utility · South Dakota · #1,810 of 3,199 U.S. utilities by customers · EIA utility #13853
Oahe Electric Coop Inc is a cooperative electric utility serving 3,282 customers in South Dakota. In 2025 it sold 333 gigawatt-hours of electricity for $24.51M in revenue, an average realized rate of 7.35¢ per kWh across all customer classes and 10.54¢ per kWh for residential customers. Its reported service territory covers 2 counties. EIA records its activities as: distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 2,335 | 45.2 | $4.76M | 10.54¢ | |
| Commercial | 723 | 279 | $18.47M | 6.63¢ | |
| Industrial | 224 | 9.7 | $1.28M | 13.16¢ | |
| Total | 3,282 | 333 | $24.51M | 7.35¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (1,612 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 3,247 | 144 | $12.91M | — |
| 2022 | 3,309 | 148 | $13.44M | — |
| 2023 | 3,354 | 173 | $15.11M | — |
| 2024 | 3,385 | 372 | $28.54M | — |
| 2025 | 3,282 | 333 | $24.51M | 10.54¢ |
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 350 GWh
Winter peak demand: 59 MW
Energy losses: 2.5% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 0.0% of 3,282 meters
Customer-sited generation (net metering): 6 installations, 0.0 MW of capacity
Counties served
Hughes, SDSully, SD
Other large utilities in South Dakota
- Black Hills Power, Inc. - 85,804 customers, residential 15.07¢
- NorthWestern Energy - (SD) - 65,396 customers, residential 13.35¢
- Sioux Valley SW Elec Coop - 30,059 customers, residential 13.87¢
- Southeastern Electric Coop Inc - (SD) - 24,428 customers, residential 12.98¢
- West River Electric Assn Inc - 21,332 customers, residential 15.16¢
- Watertown Municipal Utilities - 14,497 customers, residential 9.29¢
- City of Brookings - (SD) - 12,568 customers, residential 10.69¢
- Black Hills Electric Coop, Inc - 11,478 customers, residential 14.79¢
All South Dakota utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #13853 in the EIA frame.