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Duke Energy Carolinas (South Carolina) rates

Duke Energy Carolinas has one residential plan modelled here. A typical South Carolina home using 1,056 kWh a month pays about $167 a month.

Investor-owned 568,586 residential customers (EIA-861, 2024) Tariffs checked September 28, 2026

Typical all-in priceRS

01234567890123456789.0123456789¢/kWh
RS$167/mo

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
RS
Residential Service		 Tiered $12.48 14.5¢ 0–1,000 kWh · 15.2¢ over 1,000 kWh 14.5¢ 0–1,000 kWh · 15.2¢ over 1,000 kWh None

Charging an EV on Duke Energy Carolinas

1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical South Carolina home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.

PlanBest startCharging, best startCharging from 6 pmWhole bill with EV
RSAny$41/mo$41/mo$208/mo

With an EV charged at its best hour, the cheapest plan overall is RS. Compare plans on your own usage.

How Duke Energy Carolinas’s plans work

RS (Residential Service). In July the first 1,000 kWh a month cost 14.5¢ each; then 15.2¢ above 1,000 kWh a month. An average South Carolina home (1,499 kWh in July) goes past the first tier, so extra load such as an EV is priced higher. Fixed charge: $12.48 a month.

Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.

As a cross-check, Duke Energy Carolinas billed its residential customers an average of 13.99¢ per kWh in 2024 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for South Carolina’s price change since.

Sources for each plan

PlanEffectiveSeasonsSolar exportsSource and status
RS
Transcribed from the utility’s tariff		 September 1, 2026 Same pricing all year Not recorded in URDB Checked September 28, 2026
DEC SC Schedule RS, Fifty-Ninth Revised Leaf No. 11, effective March 1, 2026 (SC PSC eTariff) · DEC SC Summary of Rider Adjustments, Thirty-Eighth Revised Leaf No. 99, effective August 1, 2026 (eTariff revision E2026-174) · DEC SC Rider EDIT-1, Eleventh Revised Leaf No. 67, effective August 1, 2026 · DEC SC Storm Securitization Recovery STS, effective September 1, 2026 (eTariff revision E2026-209) · DEC SC Leaf No. 50C Adjustments for Fuel, Variable Environmental, Avoided Capacity and DERP, effective November 1, 2025 · SC PSC eTariff, Duke Energy Carolinas tariff index

Plans marked “Checked” were transcribed from the utility’s current tariff and rider sheets, all charges included, and are re-checked on the date shown in each file. Other plans come from the OpenEI U.S. Utility Rate Database (CC BY 4.0) and have not yet been checked line by line against the utility’s tariff. Always confirm the current rates on your utility’s website before switching plans.

Run the numbers on Duke Energy Carolinas

EV charging cost Which plan is cheaper Best time to run things Appliance cost Solar payback Heat pump vs gas