Electricity rates in San Antonio, TX
San Antonio (population 1,548,422) is served by CPS Energy (San Antonio). A typical home on its cheapest plan open to any household, RE, pays about $144 a month, 13.05¢ per kWh all-in: 18% below the Texas average of the last 12 months.
Utility CPS EnergyPopulation Census 2025 estimateState average EIA, 12 months to July 2026
Typical all-in priceRE
CPS Energy plans for a San Antonio home
| Plan | Typical bill | All-in ¢/kWh | Summer weekday windows | EV, 1,000 mi |
|---|---|---|---|---|
| REChecked | $144/mo | 13.05 | Same price all day | $34/mo |
Typical bill: average Texas use of 1,103 kWh a month, shaped hour by hour (NREL ResStock), averaged over the year. EV: Tesla Model Y Long Range AWD, 275 kWh a month from the wall, charging from its cheapest start hour. Full CPS Energy tariff details and sources.
San Antonio electricity: common questions
Who provides electricity in San Antonio, TX?
CPS Energy (San Antonio) serves San Antonio, according to CPS Energy - Eastside Switchyard Project open house displays (PDF). The name on your bill is the authority.
How much is electricity per kWh in San Antonio?
On CPS Energy’s RE plan, a typical Texas home using 1,103 kWh a month pays about 13.05¢ per kWh all-in before taxes, or $144 a month. The Texas average over the last 12 months was 15.96¢ (EIA).
How much does it cost to charge an EV in San Antonio?
Driving 1,000 miles a month in a Tesla Model Y Long Range AWD adds about $34 a month on CPS Energy’s RE plan when charging starts at its cheapest hour, against about $140 of gasoline for a 25.5 mpg car.
Calculators with CPS Energy preloaded
Other cities in Texas
Utility for San Antonio: CPS Energy - Eastside Switchyard Project open house displays (PDF). Sources: population, Census Bureau Vintage 2025 estimates; city location, Census Gazetteer; service territory, Electric Retail Service Territories (HIFLD/ORNL, from EIA-861); tariffs, see the CPS Energy page.