Black River Electric Coop, Inc - (SC)
Cooperative electric utility · South Carolina · #474 of 3,199 U.S. utilities by customers · EIA utility #1763
Black River Electric Coop, Inc - (SC) is a cooperative electric utility serving 35,116 customers in South Carolina. In 2025 it sold 737 gigawatt-hours of electricity for $104.14M in revenue, an average realized rate of 14.12¢ per kWh across all customer classes and 15.14¢ per kWh for residential customers. Its reported service territory covers 4 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 | 30,874 | 478 | $72.32M | 15.14¢ | |
| Commercial | 4,229 | 137 | $20.41M | 14.84¢ | |
| Industrial | 13 | 122 | $11.42M | 9.34¢ | |
| Total | 35,116 | 737 | $104.14M | 14.12¢ |
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 (1,289 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 33,563 | 684 | $78.14M | 12.08¢ |
| 2022 | 33,977 | 702 | $80.32M | 12.00¢ |
| 2023 | 34,508 | 692 | $82.79M | 12.76¢ |
| 2024 | 34,833 | 722 | $89.97M | 13.47¢ |
| 2025 | 35,116 | 737 | $104.14M | 15.14¢ |
Reliability (2025)
Average outage time (SAIDI): 96 minutes per customer per year
Average outages (SAIFI): 1.09 per customer
Average restoration time (CAIDI): 88 minutes
As reported for South Carolina 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: 765 GWh
Winter peak demand: 200 MW
Energy losses: 3.5% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 35,116 meters
Customer-sited generation (net metering): 520 installations, 4.2 MW of capacity
Counties served
Clarendon, SCKershaw, SCLee, SCSumter, SC
Other large utilities in South Carolina
- Dominion Energy South Carolina, Inc - 824,270 customers, residential 16.41¢
- South Carolina Public Service Authority - 219,897 customers, residential 12.91¢
- Berkeley Electric Coop Inc - 138,073 customers, residential 16.32¢
- Horry Electric Coop Inc - 103,949 customers, residential 13.83¢
- Palmetto Electric Coop Inc - 81,863 customers, residential 14.39¢
- Blue Ridge Electric Coop Inc - (SC) - 74,014 customers, residential 19.82¢
- York Electric Coop Inc - 71,541 customers, residential 13.68¢
- Laurens Electric Coop, Inc - 66,192 customers, residential 15.62¢
All South Carolina utilities and rates
Source: U.S. Energy Information Administration, Form EIA-861 2025 (filed by the utility; figures as published). Utility #1763 in the EIA frame.