Residential Service
When does peak hit on Southwestern Electric Power Co’s Residential Service? The hour never matters here — only the season. Rates peak May–October.
- peak12.88¢
- off-peak10.69¢
What does Residential Service 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 | $57 | $687 | 14.1¢ / kWh |
| Family home Three or four people with central air conditioning | 9,453 kWh | $103 | $1,241 | 13.1¢ / kWh |
| Home with an EV Same house, plus an electric car charging overnight | 13,103 kWh | $138 | $1,651 | 12.6¢ / 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 |
|---|---|---|
| peak | 12.88¢ | midnight–midnight, May–October |
| off-peak | 10.69¢ up to 600 kWh9.54¢ | midnight–midnight, November–April |
Plus a fixed charge of $9.42 per month.
Should you be on Residential Service?
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 $151 and February about $73. That $78 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 $113 a year in fixed fees. On the apartment above that is 16% of the whole bill; on the house with a car charging in it, 7%. 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 Southwestern Electric Power’s other plans
Measured against the other residential plans this utility files, a family home lands 2nd cheapest of 2. The cheapest option, RS - Residential Service, would run about $129 a year less.
Other Southwestern Electric Power plans
Who can be on Southwestern Electric Power’s Residential Service?
Eligibility is not our judgement — it is written into the tariff Southwestern Electric Power filed. This is what that document says:
This schedule is available to residential customers for all domestic uses in residences, individual family apartments, and private rooming houses. Where a portion of a residential unit is used for non-residential purposes, the appropriate nonresidential service schedule is applicable to all uses of electric service. However, this rate schedule may be applied to the residential portion of such use, provided Customer's wiring is so arranged that the use of electric service for residential purposes can be metered separately from the non-residential use.
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
- 2025-10-30
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.swepco.com/lib/docs/ratesandtariffs/Texas/TexasRatesChargesandFees10-31-25.pdf