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

Residential Service - Three Phase

When does peak hit on Duke Energy Carolinas, LLC’s Residential Service - Three Phase? The hour never matters here — only the season. Rates peak November–June.

  • off-peak14.72¢
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 Residential Service - Three Phase cost a year?

HouseholdUsesA monthPer yearWorks out to
Apartment

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

4,866 kWh$85$1,01420.8¢ / kWh
Family home

Three or four people with central air conditioning

9,453 kWh$141$1,68817.9¢ / kWh
Home with an EV

Same house, plus an electric car charging overnight

13,103 kWh$184$2,21016.9¢ / 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-peak14.72¢midnight–midnight, July–October
off-peak14.72¢ up to 800 kWh13.72¢midnight–midnight, November–June

Plus a fixed charge of $24.81 per month.

Should you be on Residential Service - Three Phase?

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 $187 and February about $113. That $74 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 $298 a year in fixed fees. On the apartment above that is 29% of the whole bill; on the house with a car charging in it, 13%. 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.

How it compares to Duke Energy Carolinas’s other plans

Measured against the other residential plans this utility files, a family home lands 21st cheapest of 22. The cheapest option, RETC (Residential Service All-Electric Time of Use with Critical Peak Pricing)), would run about $463 a year less.

Against Residential Service (RES-55) Single Phase, which looks like the plan you land on by default, this one comes out $114 more per year (7%). We infer the default from the tariff structure rather than a flag in the data, so confirm it against your own bill before you switch.

Other Duke Energy Carolinas plans

All 30 Duke Energy Carolinas plans →

Who can be on Duke Energy Carolinas’s Residential Service - Three Phase?

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

This Schedule is available when electric service is used for domestic purposes in and about (1) a residential dwelling unit, including electric service used on a farm and in the preparation of the farm's products for market, or (2) a family care home. A residential dwelling unit served under this Schedule may be used as a boarding house, fraternity house, tourist home, or like establishment, provided such residential dwelling unit is one which ordinarily would be used as a private residence. A family care home is defined as a home with support and supervisory personnel that provides room and board, personal care and habilitation services in a family environment for not more than six resident handicapped persons.

Shortened — the clause runs longer in the filing. 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/dep-nc/leaf-no-500-schedule-res.pdf?rev=bd8b7778c0834b469c0249d85c323d5f