City of Brookings - (SD)
Municipal electric utility · South Dakota · #993 of 3,199 U.S. utilities by customers · EIA utility #2285
City of Brookings - (SD) is a municipal electric utility serving 12,568 customers in South Dakota. In 2025 it sold 342 gigawatt-hours of electricity for $31.16M in revenue, an average realized rate of 9.11¢ per kWh across all customer classes and 10.69¢ per kWh for residential customers. Its reported service territory covers 1 counties. EIA records its activities as: distribution.
Customers, sales and rates by customer class (2025)
| Class | Customers | Sales (GWh) | Revenue | Avg realized rate | Share of sales |
|---|---|---|---|---|---|
| Residential | 10,769 | 114 | $12.16M | 10.69¢ | |
| Commercial | 1,629 | 41.4 | $4.64M | 11.19¢ | |
| Industrial | 170 | 187 | $14.36M | 7.69¢ | |
| Total | 12,568 | 342 | $31.16M | 9.11¢ |
Average realized rate = revenue divided by sales as reported on EIA Form 861. It blends fixed charges, demand charges and riders into one per-kWh figure; it is not the utility's tariff rate. Estimated residential bill assumes the average residential customer's actual 2025 usage (880 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 11,580 | 316 | $29.84M | 11.02¢ |
| 2022 | 11,726 | 320 | $30.70M | 11.00¢ |
| 2023 | 11,954 | 326 | $30.69M | 10.83¢ |
| 2024 | 12,309 | 321 | $30.56M | 11.12¢ |
| 2025 | 12,568 | 342 | $31.16M | 10.69¢ |
Reliability (2025)
Average outage time (SAIDI): 13 minutes per customer per year
Average outages (SAIFI): 0.08 per customer
Average restoration time (CAIDI): 157 minutes
As reported for South Dakota under the IEEE standard, with major event days included where the standard reports them. Lower is better; see the reliability rankings.
Energy supply (2025)
Net generation: — GWh
Wholesale power purchased: 342 GWh
Winter peak demand: 59 MW
Meters & rooftop solar (2025)
Smart (AMI) meters: 99.9% of 12,446 meters
Counties served
Brookings, SD
Other large utilities in South Dakota
- Black Hills Power, Inc. - 85,804 customers, residential 15.07¢
- NorthWestern Energy - (SD) - 65,396 customers, residential 13.35¢
- Sioux Valley SW Elec Coop - 30,059 customers, residential 13.87¢
- Southeastern Electric Coop Inc - (SD) - 24,428 customers, residential 12.98¢
- West River Electric Assn Inc - 21,332 customers, residential 15.16¢
- Watertown Municipal Utilities - 14,497 customers, residential 9.29¢
- Black Hills Electric Coop, Inc - 11,478 customers, residential 14.79¢
- Butte Electric Coop, Inc - 7,472 customers, residential —
All South Dakota utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #2285 in the EIA frame.