States › South Dakota › Black Hills Electric Coop, Inc
electric cooperative · EIA utility 1769
Black Hills Electric Coop, Inc
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Annual figures: Form EIA-861 for 2024, final release. Monthly state figures run to July 2026.
Black Hills Electric Coop, Inc serves 9,227 residential customers in South Dakota as an electric cooperative, according to its 2024 Form EIA-861 filing, with a service territory that touches 6 counties.
Its average residential price that year was 14.76¢ per kilowatthour, 15% above the South Dakota average of 12.86¢ and 10% below the US average of 16.48¢. The figure is residential revenue divided by residential sales, so it folds in fixed charges, riders and every rate schedule the utility bills under.
That works out to an average residential bill of $163.70 a month on average use of 1,109 kWh a month. Across South Dakota the average bill was $127.81 on 994 kWh, so a bill gap reflects how much power households use as well as what each kilowatthour costs.
For reliability it reported a SAIDI of 228.7 minutes per customer with major event days included and 102.0 minutes with them excluded, calculated under IEEE 1366 standard. The median among South Dakota utilities reporting was 73.7 minutes with major event days; this utility's figure is 210% above that median.
The average price is up 6.6% on 2019, against up 11.3% for South Dakota as a whole, and up 3.4% on 2023. EIA's early release for 2025, which has not been fully edited, shows 14.79¢.
Compared with South Dakota, the US and other electric cooperatives
| Measure, 2024 | This utility | Electric cooperatives, US median | South Dakota | United States |
|---|---|---|---|---|
| Average residential price per kWh | 14.76¢ | 13.74¢ | 12.86¢ | 16.48¢ |
| Average monthly residential bill | $163.70 | $149.95 | $127.81 | $142.26 |
| Average monthly use, kWh | 1,109 | 1,126 | 994 | 863 |
| Residential price change, 1 year | +3.4% | — | +4.4% | +3.0% |
| Residential price change, 5 years | +6.6% | — | +11.3% | +26.7% |
| SAIDI, all events (minutes) | 228.7 | 263.0 | 73.7 median | 184.5 median |
| SAIDI, without major event days | 102.0 | 147.0 | 65.1 median | 99.8 median |
State and US prices, bills and use are EIA's own averages over every customer. The ownership column and the reliability columns are medians across utilities with at least 1,000 residential customers, computed on this site from the final 2024 file. Among the 8 filings by electric cooperatives in South Dakota, the median price was 13.29¢. In South Dakota this utility's price ranks 2 of 20, counting from the highest.
Average price by year
Black Hills Electric Coop, IncSouth Dakota averageUS average
Year by year
| Year | ¢ per kWh | South Dakota ¢ | Monthly bill | kWh a month | Residential customers | All sales |
|---|---|---|---|---|---|---|
| 2025 early release | 14.79¢ | 13.38¢ | $165.83 | 1,122 | 9,415 | 166 GWh |
| 2024 | 14.76¢ | 12.86¢ | $163.70 | 1,109 | 9,227 | 161 GWh |
| 2023 | 14.28¢ | 12.32¢ | $159.24 | 1,115 | 9,154 | 160.6 GWh |
| 2022 | 13.94¢ | 12.09¢ | $165.12 | 1,184 | 8,966 | 169.3 GWh |
| 2021 | 14.22¢ | 12.22¢ | $163.07 | 1,147 | 8,604 | 158.2 GWh |
| 2020 | 14.21¢ | 11.75¢ | $161.43 | 1,136 | 8,436 | 151.3 GWh |
| 2019 | 13.85¢ | 11.55¢ | $164.02 | 1,184 | 8,332 | 153.9 GWh |
| 2018 | 14.15¢ | 11.59¢ | $156.53 | 1,106 | 8,647 | 148.9 GWh |
| 2017 | 14.50¢ | 11.77¢ | $153.55 | 1,059 | 8,572 | 141.9 GWh |
| 2016 | 13.84¢ | 11.47¢ | $143.41 | 1,037 | 8,459 | 136.8 GWh |
| 2015 | 13.10¢ | 11.08¢ | $137.04 | 1,046 | 8,366 | 135.5 GWh |
| 2014 | 12.16¢ | 10.47¢ | $137.31 | 1,130 | 8,296 | 143.3 GWh |
| 2013 | 11.88¢ | 10.26¢ | $138.35 | 1,164 | 8,206 | 145.4 GWh |
Bundled residential service only in the price, bill and use columns. Bill = residential revenue ÷ customers ÷ 12; use = residential sales ÷ customers ÷ 12. EIA describes its early release as not fully edited; it is shown for this utility alone and enters no average, median or rank on this site.
Month by month
Black Hills Electric Coop, IncSouth Dakota average
Sales by sector, 2024
| Sector | Customers | Sales | Share of sales | Revenue | ¢ per kWh, bundled |
|---|---|---|---|---|---|
| Residential | 9,227 | 122.8 GWh | 76% | $18,125,500 | 14.76¢ |
| Commercial | 1,955 | 36 GWh | 22% | $5,163,200 | 14.34¢ |
| Industrial | 96 | 2.2 GWh | 1% | $412,200 | 18.56¢ |
Customers, sales and revenue count every service type the utility reported (bundled, energy-only and delivery-only). The price column uses bundled service alone, because part-bill revenue would understate it. Sources of energy: 175.4 GWh in total, of which 0.2% was its own net generation and 175.1 GWh was bought wholesale; summer peak demand 35 MW.
Reliability
Minutes of sustained interruption per customer in 2024, as the utility reported them under IEEE 1366 standard. SAIFI: 1.03 interruptions per customer with major event days, 0.77 without; CAIDI 221.8 minutes per interruption. EIA's South Dakota total across all reporting utilities was 84.7 minutes with major event days and 62.1 without. Major event days are storms and similar events that a utility's chosen method sets apart; methods differ, so treat comparisons as approximate. What SAIDI and SAIFI mean.
| Year | SAIDI, all events | SAIDI, no major events | SAIFI, all events | SAIFI, no major events | Method |
|---|---|---|---|---|---|
| 2025 early release | 2,486.8 | 120.1 | 3.41 | 0.86 | IEEE 1366 |
| 2024 | 228.7 | 102.0 | 1.03 | 0.77 | IEEE 1366 |
| 2023 | 163.9 | 87.8 | 0.78 | 0.62 | IEEE 1366 |
| 2022 | 131.7 | 80.0 | 0.70 | 0.61 | IEEE 1366 |
| 2021 | 393.9 | 132.2 | 1.67 | 1.02 | IEEE 1366 |
| 2020 | 222.6 | 222.6 | 1.16 | 1.16 | IEEE 1366 |
| 2019 | 566.6 | 68.7 | 2.28 | 0.45 | IEEE 1366 |
| 2018 | 68.1 | 68.1 | 0.92 | 0.92 | IEEE 1366 |
| 2017 | 97.6 | 97.6 | 0.96 | 0.96 | IEEE 1366 |
| 2016 | 245.6 | 66.0 | 1.26 | 0.46 | IEEE 1366 |
| 2015 | 95.6 | 95.6 | 0.50 | 0.50 | IEEE 1366 |
Counties in its service territory
Counties the utility listed on Form EIA-861 for 2024. Listing a county does not mean the utility serves all of it.
Other utilities in South Dakota
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Central Electric Coop, Inc | Cooperative | 6,483 | 13.64¢ | $201.08 | — | — |
| Northern Electric Coop, Inc | Cooperative | 5,757 | 11.29¢ | $225.58 | 49.8 | 49.8 |
| Rosebud Electric Coop Inc | Cooperative | 4,856 | 10.63¢ | $116.13 | 111.6 | 95.0 |
| West River Electric Assn Inc | Cooperative | 18,423 | 14.25¢ | $127.85 | 43.5 | 43.5 |
| Southeastern Electric Coop Inc | Cooperative | 20,160 | 12.41¢ | $139.98 | 71.3 | 71.3 |
| Sioux Valley SW Elec Coop | Cooperative | 25,583 | 12.87¢ | $172.31 | 64.4 | 64.4 |
| Dakota Energy Coop Inc | Cooperative | 3,224 | 15.30¢ | $246.15 | — | — |
| City of Brookings | Municipal | 10,544 | 11.12¢ | $89.79 | 10.6 | 10.6 |
All South Dakota utilities · Electric cooperatives nationwide
Questions and answers
How much does electricity cost from Black Hills Electric Coop, Inc?
Residential customers paid an average of 14.76¢ per kilowatthour in 2024. EIA derives this by dividing residential revenue by residential sales; it is an average across all rate schedules and charges, not a tariff rate.
How does that compare with South Dakota?
The South Dakota average residential price in 2024 was 12.86¢ and the US average 16.48¢; Black Hills Electric Coop, Inc was 15% above the state figure. Among 20 utility filings with a bundled residential price in South Dakota, it had the 2nd highest.
What is the average Black Hills Electric Coop, Inc bill?
$163.70 a month in 2024, on average residential use of 1,109 kWh a month (annual revenue and sales divided by customers and by twelve). The South Dakota average was $127.81 on 994 kWh.
How reliable is Black Hills Electric Coop, Inc service?
It reported 228.7 minutes of interruption per customer (SAIDI) including major event days and 102.0 minutes excluding them, with 1.03 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.
Is the Black Hills Electric Coop, Inc price rising?
The average residential price was up 3.4% in 2024 compared with 2023 and up 6.6% compared with 2019. EIA's early, not fully edited release for 2025 shows 14.79¢.
Which counties does Black Hills Electric Coop, Inc serve?
Its Form EIA-861 service territory lists 6 counties: Custer County, SD, Fall River County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD and Pennington County, SD. A county can appear in several utilities' territories.
Provenance
Source: U.S. Energy Information Administration. Annual figures are from Form EIA-861 (sales to ultimate customers, reliability, operational data and service territory files), final release for 2024, respondent "Black Hills Electric Coop, Inc", utility number 1769; the 2025 row is from EIA's early release. Monthly utility figures are from the Form EIA-861M sample. State and US averages are from the Form EIA-861M sales and revenue workbook, published through July 2026. All are US government works in the public domain. Page built 1 Oct 2026. Errors in processing are corrected at the next build; see corrections. For tariffs and rate schedules, consult the utility or the state utility commission.