Electricity rates in 57717 — Belle Fourche, SD
Homes in ZIP 57717 pay about 15.6¢ per kWh (Black Hills Power, Inc., Jan–Aug 2026). The South Dakota average is 15.2¢ and the U.S. average 18.2¢ (Aug 2026).
What a month of electricity costs
Monthly cost at the average price of 15.6¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.
Where ZIP 57717 is
Outlined: ZIP code area · scroll or pinch to zoomUtilities serving 57717
| Utility | Home price | Avg. bill | Customers in SD |
|---|---|---|---|
| Black Hills Power, Inc. Investor Owned | 15.6¢ Jan–Aug 2026 | $110 | 60,951 |
| Butte Electric Coop, Inc. Cooperative · serves Butte County | 14.6¢ 2024 | $194 | 7,265 |
Utilities are matched to this ZIP code by NREL’s ZIP–utility table and the EIA service-territory list for Butte County; county matches may serve only part of the area. Prices are each utility’s average residential revenue per kWh.
South Dakota price trend
Hover or tap the chart for exact monthly values. Source: EIA-861M (monthly, latest months preliminary); forecast: EIA Short-Term Energy Outlook (October 2026) for the West North Central region, which includes Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, South Dakota.
Averages, not a quote. Prices here are what each utility’s residential customers paid on average (revenue ÷ kWh sold, fixed charges included), as reported to the U.S. Energy Information Administration. Your own rate depends on your plan, season and usage — check your bill or your utility’s tariff.
Questions about 57717
How much does electricity cost in 57717?
About 15.6¢ per kWh for homes (Black Hills Power, Inc., Jan–Aug 2026, EIA). At 900 kWh a month that is roughly $140.
Who is the electric utility for 57717?
Black Hills Power, Inc., with about 60,951 residential customers in South Dakota; 1 other utility also serves parts of the area.
Is electricity in SD getting more expensive?
The South Dakota residential average was 15.2¢ per kWh in August 2026, up 9% from a year earlier; the U.S. average was 18.2¢.