Residential Service - Three Phase
Applies to Progress Energy Carolinas Inc only — check which one your bill lists.
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¢
Weekends are off-peak all day — the cheapest time to run anything you can schedule.
What does Residential Service - Three Phase cost a year?
| Household | Uses | A month | Per year | Works out to |
|---|---|---|---|---|
| Apartment One or two people, no central air, no electric heat | 4,866 kWh | $85 | $1,014 | 20.8¢ / kWh |
| Family home Three or four people with central air conditioning | 9,453 kWh | $141 | $1,688 | 17.9¢ / kWh |
| Home with an EV Same house, plus an electric car charging overnight | 13,103 kWh | $184 | $2,210 | 16.9¢ / 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
| Period | Rate | Applies when |
|---|---|---|
| off-peak | 14.72¢ | midnight–midnight, July–October |
| off-peak | 14.72¢ 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.
Other Duke Energy Carolinas plans in Progress Energy Carolinas Inc
- Residential Service - Single Phaseflat
- Residential Service-Time of Use (R-TOUD) - Single Phasedemand
- Residential Time of Use (R-TOU) Single PhaseTOU
- Residential Time of Use (R-TOU) Three PhaseTOU
- Residential Time of Use EV(R-TOU-EV) Single PhaseTOU
- Residential Time of Use EV(R-TOU-EV) Three PhaseTOU
- Residential Time Of Use Schedule (R-TOUD) - Three Phasedemand
- Residential Time of Use with Critical Peak Pricing (R-TOU-CPP) Single PhaseTOU
- Residential Time of Use with Critical Peak Pricing (R-TOU-CPP) Three PhaseTOU
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
- Tiered billing for electricity: why the last kWh costs more
A cheap allowance, then a cliff. Where the cliff sits is the whole game.
- Should you switch to a time-of-use electricity plan?
A wide peak-to-off-peak gap is a lever, not a saving. Levers need something to move.
- Why is my electric bill so high in summer?
Usually three causes at once, and only one of them is your air conditioner.
- Why is my electric bill so high? Seven causes, in the order to check them
Seven causes, ranked by how often they are the answer. Only two are about using more.
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