South Dakota · Cooperative
Oahe Electric Coop Inc
10.54¢ per kWh, bundled, EIA-861 2025. Average bill $169.88 at 1,611.9 kWh a month, across 2,335 customers on that row.
South Dakota averaged 13.32¢/kWh and $131.10 a month. The United States averaged 17.23¢/kWh and $150.68. State and national figures come from EIA's Average Bill file.
Revenue divided by sales, EIA-861 Sales to Ultimate Customers, 2025, released October 7, 2026. Texas wires utilities come from the Delivery Companies file. The price and bill use bundled service. Customer count: 2,335, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$105.40
10.54¢/kWh × 1,000 kWh. Bundled residential average, EIA-861 2025. The customer charge is already folded into this average, so it stands beside a tariff total rather than being added to it.
Annual history
| Year | ¢/kWh | Avg. bill | Avg. kWh | Customers |
|---|---|---|---|---|
| 2015 | 10.46¢ | $145.00 | 1,385.6 | 2,282 |
| 2016 | 9.85¢ | $137.97 | 1,401.2 | 2,322 |
| 2017 | 10.09¢ | $144.46 | 1,432.0 | 2,324 |
| 2018 | 9.97¢ | $157.85 | 1,583.4 | 2,346 |
| 2019 | 9.74¢ | $170.69 | 1,751.9 | 2,211 |
| 2020 | — | — | — | — |
| 2021 | — | — | — | — |
| 2022 | — | — | — | — |
| 2023 | — | — | — | — |
| 2024 | — | — | — | — |
| 2025 | 10.54¢ | $169.88 | 1,611.9 | 2,335 |
EIA-861, 2015–2025, using the same service type as the 2025 figure. A blank year means that service was not in the file.
Counties
Hughes, Sully.
EIA-861 Service Territory, 2025. A listed county is the county EIA recorded. It does not mean every address in the county is served. Open this utility in the bill calculator · Rate history tool