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Tariff data · 2026-08-27
← Duke Energy Carolinas, LLC · NC

ES (Residential Service Energy Star, All-Electric)

Applies to North Carolina only — check which one your bill lists.

When does peak hit on Duke Energy Carolinas, LLC’s ES? The hour never matters here — only the season. Rates peak October–April.

  • off-peak11.69¢
Weekdays
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Weekends
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Weekends are off-peak all day — the cheapest time to run anything you can schedule.

What does ES cost a year?

This plan is open only to households that qualify for it — the tariff is named “All-Electric”. It is real and currently offered, but not to everyone, so we leave it out of the plan-to-plan comparisons; the figures below are what it would cost a household that does qualify.
HouseholdUsesA monthPer yearWorks out to
Apartment

One or two people, no central air, no electric heat

4,866 kWh$61$73715.1¢ / kWh
Family home

Three or four people with central air conditioning

9,453 kWh$106$1,27313.5¢ / kWh
Home with an EV

Same house, plus an electric car charging overnight

13,103 kWh$141$1,68712.9¢ / kWh

Estimates, not quotes. We run three made-up but realistic households through this tariff hour by hour for a full year — including the way air conditioning loads the afternoon and an EV loads the small hours. Your own bill depends on when you actually use electricity, which is exactly the thing a per-kWh number hides.

What you actually pay

PeriodRateApplies when
off-peak11.69¢midnight–midnight, May–September
off-peak11.69¢ up to 800 kWh10.57¢midnight–midnight, October–April

Plus a fixed charge of $14 per month.

Should you be on ES?

The hour of day does not change what you pay here — the month does. Running the same house through the full year, July costs about $142 and February about $84. That $59 swing is part rate and part weather, and it is the reason a budget built on your spring bill will break in July.

Before a single kilowatt-hour moves, this plan charges $168 a year in fixed fees. On the apartment above that is 23% of the whole bill; on the house with a car charging in it, 10%. Fixed charges are invisible in a cents-per-kWh comparison and they punish small users hardest — if you use very little electricity, the headline rate is the least important number on this page.

Other Duke Energy Carolinas plans in North Carolina

Who can be on Duke Energy Carolinas’s ES (Residential Service Energy Star, All-Electric)?

Eligibility is not our judgement — it is written into the tariff Duke Energy Carolinas filed. This is what that document says:

Available only to residential customers in residences, condominiums, mobile homes, or individually-metered apartments which provide independent and permanent facilities complete for living, sleeping, eating, cooking, and sanitation, and which are certified to meet the standards of the Energy Star program of the United States Department of Energy and Environmental Protection Agency.

Quoted from the filed tariff. Your utility decides eligibility, not us; check with them before you switch.

If this is new to you

Where this comes from

Effective
2026-01-01

the date this tariff took effect

Covers
delivery + supply

the ZIP-code service map lists this territory as bundled, so the utility sells delivery and supply together

Enrollment
open to new customers

Tariff document: https://www.duke-energy.com/-/media/pdfs/for-your-home/rates/electric-nc/ncschedulees.pdf?rev=e26c496113714d94a7ba09060ad12d7b