South Carolina · Cooperative
Tri-County Electric Coop, Inc (SC)
19.94¢ per kWh, bundled, EIA-861 2025. Average bill $225.50 at 1,130.9 kWh a month, across 17,670 customers on that row.
South Carolina averaged 15.12¢/kWh and $161.21 a month. The United States averaged 17.23¢/kWh and $150.68. State and national figures come from EIA's Average Bill file.
Revenue divided by sales, EIA-861 Sales to Ultimate Customers, 2025, released October 7, 2026. Texas wires utilities come from the Delivery Companies file. The price and bill use bundled service. Customer count: 17,670, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$199.40
19.94¢/kWh × 1,000 kWh. Bundled residential average, EIA-861 2025. The customer charge is already folded into this average, so it stands beside a tariff total rather than being added to it.
Annual history
| Year | ¢/kWh | Avg. bill | Avg. kWh | Customers |
|---|---|---|---|---|
| 2015 | 15.12¢ | $173.04 | 1,144.4 | 17,142 |
| 2016 | 15.23¢ | $170.66 | 1,120.4 | 17,170 |
| 2017 | 15.67¢ | $168.28 | 1,073.7 | 17,225 |
| 2018 | 15.34¢ | $178.67 | 1,165.0 | 17,253 |
| 2019 | 15.31¢ | $170.44 | 1,113.2 | 17,325 |
| 2020 | 15.67¢ | $170.74 | 1,089.6 | 17,492 |
| 2021 | 15.52¢ | $169.37 | 1,091.5 | 17,614 |
| 2022 | 15.74¢ | $178.33 | 1,132.9 | 17,559 |
| 2023 | 17.27¢ | $182.70 | 1,057.8 | 17,581 |
| 2024 | 18.51¢ | $203.33 | 1,098.5 | 17,672 |
| 2025 | 19.94¢ | $225.50 | 1,130.9 | 17,670 |
EIA-861, 2015–2025, using the same service type as the 2025 figure. A blank year means that service was not in the file.
Counties
Calhoun, Kershaw, Lexington, Orangeburg, Richland, Sumter.
EIA-861 Service Territory, 2025. A listed county is the county EIA recorded. It does not mean every address in the county is served. Open this utility in the bill calculator · Rate history tool