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Tariff data · 2026-08-26
City of San Antonio - (TX) · TX

RE - Residential Service

When does peak hit on City of San Antonio - (TX)’s RE - Residential Service? The hour never matters here — only the season. Rates peak October–May.

  • off-peak8.92¢
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 RE - Residential Service cost a year?

HouseholdUsesPer yearWorks out to
Apartment

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

4,866 kWh$54811.3¢ / kWh
Family home

Three or four people with central air conditioning

9,453 kWh$99210.5¢ / kWh
Home with an EV

Same house, plus an electric car charging overnight

13,103 kWh$1,34410.3¢ / 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-peak8.92¢midnight–midnight, October–May
off-peak8.92¢ up to 600 kWh11.07¢midnight–midnight, June–September

Plus a fixed charge of $9.5 per month.

Should you be on RE - 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 $118 and February about $63. That $55 swing is part rate and part weather, and it is the reason a budget built on your spring bill will break in July.

There is a usage cliff to watch. The first 600 kWh each month are billed at 8.9¢; past that line the rate steps up to 11.1¢ — 24% more for every unit after. The last kilowatt-hour of a heavy month is the expensive one, which is why cutting a little off a big month saves more than cutting the same amount off a small one.

Before a single kilowatt-hour moves, this plan charges $114 a year in fixed fees. On the apartment above that is 21% of the whole bill; on the house with a car charging in it, 8%. 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 City of San Antonio - (TX)’s other plans

Measured against the other residential plans this utility files, a family home lands 2nd cheapest of 2. The cheapest option, RA - Residential All-Electric, would run about $16 a year less.

If this is new to you

Where this comes from

Effective
2026-01-01

the date this tariff took effect

Covers
delivery + supply

우편번호 매핑에서 이 지역 서비스 종류가 Bundled — 배달과 공급을 함께 판다

Enrollment
open to new customers

Tariff document: https://www.cpsenergy.com/content/dam/corporate/en/Documents/2024_Rate_ResidentialElectric.pdf