South Dakota · Cooperative
West River Electric Assn Inc
15.16¢ per kWh, bundled, EIA-861 2025. Average bill $135.78 at 895.8 kWh a month, across 18,975 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: 18,975, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$151.60
15.16¢/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 | 12.24¢ | $110.72 | 904.7 | 14,621 |
| 2016 | 12.65¢ | $112.34 | 888.3 | 14,861 |
| 2017 | 13.08¢ | $119.19 | 911.5 | 15,030 |
| 2018 | 13.09¢ | $125.21 | 956.5 | 15,264 |
| 2019 | 13.13¢ | $125.87 | 958.7 | 15,483 |
| 2020 | 13.43¢ | $123.20 | 917.6 | 16,148 |
| 2021 | 12.69¢ | $116.79 | 920.1 | 16,729 |
| 2022 | 13.21¢ | $127.31 | 964.0 | 17,214 |
| 2023 | 13.40¢ | $120.96 | 902.5 | 18,130 |
| 2024 | 14.25¢ | $127.85 | 897.0 | 18,423 |
| 2025 | 15.16¢ | $135.78 | 895.8 | 18,975 |
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
Haakon, Jackson, Meade, Oglala Lakota, Pennington, Ziebach.
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