Duke Energy Carolinas, LLC electricity rates in South Carolina, 2025
Duke Energy Carolinas, LLC’s 582,062 residential customers paid an average of 13.47¢ per kWh in 2025, 11% below the South Carolina average of 15.12¢. The typical home used 1,051 kWh a month, for an average bill of $142.
- 13.47¢avg ¢/kWh (2025)−0.52¢ (-3.7%) vs 2024
- $142Avg monthly billSouth Carolina: $161
- 1,051 kWhAvg monthly useSouth Carolina: 1,066 kWh
- 582,062Residential customersFull-service utility
| Sector | Customers | Sales (MWh) | Revenue | ¢/kWh 2025 | ¢/kWh 2024 | Change |
|---|---|---|---|---|---|---|
| Residential | 582,062 | 7,340,837 | $988,710,300 | 13.47¢ | 13.99¢ | −0.52¢ (-3.7%) |
| Commercial | 104,016 | 6,228,631 | $602,947,700 | 9.68¢ | 10.53¢ | −0.85¢ (-8.1%) |
| Industrial | 1,464 | 8,066,419 | $525,906,500 | 6.52¢ | 7.18¢ | −0.66¢ (-9.2%) |
| All sectors | 687,542 | 21,635,887 | $2,117,564,500 | 9.79¢ | 10.38¢ | −0.59¢ (-5.7%) |
How Duke Energy Carolinas, LLC compares
- South Carolina residential average, 2025: 15.12¢ per kWh, 1,066 kWh a month, $161 average bill. U.S. average: 17.23¢, 874 kWh, $151.
- Among 28 full-service utilities in South Carolina with at least 1,000 residential customers, Duke Energy Carolinas, LLC ranks 7 of 28 from lowest to highest average price.
- Latest monthly figure: South Carolina homes paid 15.76¢ per kWh in August 2026 (preliminary), against 15.16¢ in August 2025. Summer months often run higher than the annual average.
- From 2024 to 2025 this average fell 3.7%; the state average rose 6.2%.
- Duke Energy Carolinas, LLC is an investor-owned utility, a private company whose rates are set by the state utility commission. Balancing authority: DUK.
Where Duke Energy Carolinas, LLC serves
EIA lists 19 South Carolina counties in its 2025 service territory: Abbeville, Anderson, Cherokee, Chester, Edgefield, Fairfield, Greenville, Greenwood, Kershaw, Lancaster, Laurens, McCormick, Newberry, Oconee, Pickens, Saluda, Spartanburg, Union, York.
194 ZIP codes are matched to Duke Energy Carolinas, LLC in NREL’s 2024 ZIP file: 29014, 29015, 29020, 29021, 29031, 29036, 29037, 29055, 29058, 29067, 29070, 29075, 29108, 29122, 29126, 29127, 29138, 29145, 29178, 29180, 29301, 29302, 29303, 29304, 29305, 29306, 29307, 29316, 29319, 29320, 29321, 29322, 29323, 29324, 29325, 29329, 29330, 29331, 29332, 29333, 29334, 29335, 29336, 29338, 29340, 29341, 29342, 29346, 29348, 29349, 29351, 29353, 29355, 29356, 29360, 29364, 29365, 29368, 29369, 29370, and 134 more. Utility boundaries do not follow ZIP lines, so a ZIP can have more than one provider.
South Carolina full-service utilities with similar rates
| Provider | ¢/kWh | Avg bill | Customers |
|---|---|---|---|
| Greer Commission of Public Wks | 12.81¢ | $115 | 23,192 |
| Easley Combined Utility System | 12.81¢ | $126 | 16,019 |
| South Carolina Public Service Authority | 12.91¢ | $124 | 188,962 |
| York Electric Coop Inc | 13.68¢ | $148 | 66,369 |
| MPD Electric Cooperative | 13.73¢ | $180 | 32,130 |
| Horry Electric Coop Inc | 13.83¢ | $148 | 91,545 |
| Duke Energy Progress (NC) | 14.09¢ | $170 | 143,884 |
| Lockhart Power Co | 14.23¢ | $158 | 4,961 |
Sources
- U.S. Energy Information Administration, Annual Electric Power Industry Report, Form EIA-861, 2025 final data (f8612025.zip, file dated October 7, 2026): Sales to Ultimate Customers, Average Monthly Bill and Service Territory tables.
- EIA Form EIA-861, 2024 final data (f8612024.zip, file dated December 4, 2025), for the 2024 comparison.
- EIA Electric Power Monthly, Table 5.6.A (average price by state, August 2026 and August 2025; 2026 values are preliminary), file dated October 22, 2026.
- National Renewable Energy Laboratory via OpenEI, U.S. Electric Utility Companies and Rates: Look-up by Zipcode (2024) (investor-owned and other utilities, files dated November 10, 2025), used only to match ZIP codes to utilities.
Average price = residential revenue ÷ residential kWh sold, as reported to EIA. It includes fixed monthly charges, taxes passed through in revenue and seasonal tiers, averaged over the year. Your own rate depends on your tariff and usage.
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