Mid-Carolina Electric Coop Inc
Cooperative electric utility · South Carolina · #309 of 3,199 U.S. utilities by customers · EIA utility #12462
Mid-Carolina Electric Coop Inc is a cooperative electric utility serving 61,196 customers in South Carolina. In 2025 it sold 1,057 gigawatt-hours of electricity for $169.63M in revenue, an average realized rate of 16.04¢ per kWh across all customer classes and 16.83¢ per kWh for residential customers. Its reported service territory covers 5 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 | 57,067 | 793 | $133.44M | 16.83¢ | |
| Commercial | 4,120 | 229 | $32.30M | 14.10¢ | |
| Industrial | 9 | 35.6 | $3.88M | 10.92¢ | |
| Total | 61,196 | 1,057 | $169.63M | 16.04¢ |
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 (1,158 kWh/month).
Five-year trend
| Year | Customers | Sales (GWh) | Revenue | Residential rate |
|---|---|---|---|---|
| 2021 | 58,529 | 1,012 | $122.78M | 12.75¢ |
| 2022 | 59,262 | 1,052 | $142.16M | 14.18¢ |
| 2023 | 59,829 | 997 | $137.32M | 14.48¢ |
| 2024 | 60,566 | 1,043 | $148.95M | 14.88¢ |
| 2025 | 61,196 | 1,057 | $169.63M | 16.83¢ |
Reliability (2025)
Average outage time (SAIDI): 267 minutes per customer per year
Average outages (SAIFI): 2.21 per customer
Average restoration time (CAIDI): 121 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: 1,096 GWh
Winter peak demand: 306 MW
Energy losses: 3.4% of energy handled
Meters & rooftop solar (2025)
Smart (AMI) meters: 100.0% of 61,196 meters
Customer-sited generation (net metering): 1 installations, 0.0 MW of capacity
Counties served
Aiken, SCLexington, SCNewberry, SCRichland, SCSaluda, 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 #12462 in the EIA frame.