Investor Owned utility · · SD
Black Hills Power, Inc.
In 2025, the average Black Hills Power, Inc. customer in South Dakota was without power for 541 minutes (9.0 hours), 315% more than the median South Dakota utility.
Outage minutes per customer 541min 2025, including major storms
Excluding major storm days 43min The everyday reliability of the network
Outages per customer a year 2.27 SAIFI, 2025
Residential price 15.1¢/kWh 2025 · South Dakota median 12.9¢
Reliability
Minutes in the dark, year by year
Average minutes without power per customer in South Dakota (SAIDI), with and without major event days, against the median South Dakota utility.
Price
Residential cents per kWh
Revenue from full-service residential customers divided by their sales, as reported to the EIA.
Territory
Counties served
Counties where Black Hills Power, Inc. reports customers. Open one for its full outage history.
Montana
South Dakota
Source: U.S. Energy Information Administration, Form EIA-861, 2018–2025. Reliability uses the IEEE 1366 standard where the utility reports it. Residential customers in 2025: 69,800.