Northern Electric Coop, Inc
Cooperative electric utility · South Dakota · #1,336 of 3,199 U.S. utilities by customers · EIA utility #13750
Northern Electric Coop, Inc is a cooperative electric utility serving 6,938 customers in South Dakota. In 2025 it sold 300 gigawatt-hours of electricity for $30.87M in revenue, an average realized rate of 10.27¢ per kWh across all customer classes and 11.43¢ per kWh for residential customers. Its reported service territory covers 12 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 | 5,823 | 146 | $16.72M | 11.43¢ | |
| Commercial | 864 | 51.1 | $5.06M | 9.91¢ | |
| Industrial | 251 | 103 | $9.08M | 8.81¢ | |
| Total | 6,938 | 300 | $30.87M | 10.27¢ |
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 (2,094 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 6,523 | 317 | $28.93M | 10.43¢ |
| 2022 | 6,586 | 316 | $28.84M | 9.99¢ |
| 2023 | 6,717 | 299 | $28.04M | 10.13¢ |
| 2024 | 6,888 | 296 | $29.65M | 11.29¢ |
| 2025 | 6,938 | 300 | $30.87M | 11.43¢ |
Reliability (2025)
Average outage time (SAIDI): 72 minutes per customer per year
Average outages (SAIFI): 0.74 per customer
Average restoration time (CAIDI): 97 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: 310 GWh
Winter peak demand: 66 MW
Energy losses: 3.0% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 6,992 meters
Counties served
Beadle, SDBrown, SDClark, SDDay, SDDickey, NDEdmunds, SDFaulk, SDHand, SDMarshall, SDMcPherson, SDSargent, NDSpink, 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¢
- City of Brookings - (SD) - 12,568 customers, residential 10.69¢
- Black Hills Electric Coop, Inc - 11,478 customers, residential 14.79¢
All South Dakota utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #13750 in the EIA frame.