NerdyWatts

Utility · NC, SC

Duke Energy Carolinas, LLC

31 residential tariffs on file in NC, SC, ranging from $0.1244 to $0.1726 per kWh at 1,000 kWh a month.

$0.1244cheapest, all in
$0.1343average actually billed
2026most recent filing
39,946solar installations

The gap between this utility's cheapest and most expensive residential tariff is $578 a year for a household using 1,000 kWh a month. Tariffs are not always open to everyone — some require electric heating, a demand meter or program enrollment — so check eligibility with the utility before switching.

Residential tariffs

TariffStructureFiledFixed/mo $/kWh @1,000Annual
RETC (Residential Service All-Electric Time of Use with Critical Peak Pricing)) Time-of-use 2026 $14.00 $0.1244 $1,492.98
Residential Service Energy Star All-Electric ES Tiered 2025 $11.96 $0.1293 $1,552.24
ES (Residential Service Energy Star, All-Electric) Seasonal + tiered 2026 $14.00 $0.1296 $1,555.17
RSTC (Residential Service Time of Use with Critical Peak Pricing) Time-of-use 2026 $14.00 $0.1314 $1,577.00
RE (Residential Electric Water Heating and Space Conditioning) Seasonal + tiered 2026 $14.00 $0.1354 $1,625.05
ES (Residential Service Energy Star, Standard) Flat 2026 $14.00 $0.1354 $1,625.09
Residential Electric Water Heating and Space Conditioning - RE Tiered 2025 $11.96 $0.1361 $1,633.08
Residential Service Energy Star Standard ES Tiered 2025 $11.96 $0.1391 $1,669.81
RS (Residential Service) Flat 2026 $14.00 $0.1416 $1,698.66
Residential - RS (SC) Tiered 2025 $11.96 $0.1464 $1,756.82
Residential Service RB; Closed Rate Tiered 2024 $12.96 $0.1471 $1,765.72
Residential Time of Use with Critical Peak Pricing (R-TOU-CPP) Single Phase Time-of-use 2026 $15.81 $0.1540 $1,848.08
Residential Time of Use EV(R-TOU-EV) Single Phase ⚠ Time-of-use 2026 $15.81 $0.1566 $1,879.26
Residential Service Time-of-Use with Critical Peak Pricing(R-TOU-CPP) Single Phase Time-of-use 2026 $14.63 $0.1603 $1,924.23
Residential Service - Single Phase Time-of-use + tiered 2026 $15.81 $0.1620 $1,944.12
Residential Service (RES-55) Single Phase Seasonal + tiered 2026 $11.78 $0.1621 $1,945.72
Residential Time of Use with Critical Peak Pricing (R-TOU-CPP) Three Phase Time-of-use 2026 $24.81 $0.1630 $1,956.08
Residential Time of Use (R-TOU) Single Phase Time-of-use 2026 $15.81 $0.1636 $1,963.21
Residential Time of Use EV(R-TOU-EV) Three Phase ⚠ Time-of-use 2026 $24.81 $0.1656 $1,987.26
Residential Service Time-of-Use with Critical Peak Pricing(R-TOU-CPP) Three Phase Time-of-use 2026 $23.63 $0.1694 $2,032.23
Residential Service - Three Phase Seasonal + tiered 2026 $24.81 $0.1707 $2,048.12
Residential Service (RES-55) Three Phase Seasonal + tiered 2026 $20.78 $0.1711 $2,053.72
Residential Time of Use (R-TOU) Three Phase Time-of-use 2026 $24.81 $0.1726 $2,071.21
RT (Residential Service Time of Use) Time-of-use 2026 $14.00 not priced —
Residential Service-Time of Use (R-TOUD) - Single Phase Time-of-use 2026 $15.81 not priced —
Residential Time Of Use Schedule (R-TOUD) - Three Phase Time-of-use 2026 $24.81 not priced —
Residential Time-of-Use RT Time-of-use 2025 $13.09 not priced —
Residential Service Time-of-Use (R-TOUD-55) Single Phase Time-of-use 2026 $14.63 not priced —
Residential Service Time-of-Use (R-TOUD-55) Three Phase Time-of-use 2026 $23.63 not priced —
Residential Service Solar Time-of-Use (R-STOU) Three Phase Time-of-use 2026 $23.63 not priced —
Residential Service Solar Time-of-Use (R-STOU) Single Phase Time-of-use 2026 $14.63 not priced —

Solar and net metering

Duke Energy Carolinas, LLC reports 39,946 residential solar installations to the EIA, totalling 292.645 MW. That means exported power is likely to earn something here, though what an exported kWh is worth depends on state rules rather than on the tariff in most cases.

For reference, Duke Energy Carolinas, LLC collected an average of $0.1343 per kWh from residential customers in the most recent EIA survey, across all its tariffs and all usage levels. A single tariff priced at 1,000 kWh a month will differ from that blended figure.