Electricity rates in 78288 — San Antonio, TX
Homes in ZIP 78288 pay about 13.0¢ per kWh (City of San Antonio (TX), Jan–Aug 2026). The Texas average is 15.9¢ and the U.S. average 18.2¢ (Aug 2026).
What a month of electricity costs
Monthly cost at the average price of 13.0¢ per kWh. Real bills add or subtract fixed charges, tiers, time-of-use and fuel adjustments.
Where ZIP 78288 is
scroll or pinch to zoomUtilities serving 78288
| Utility | Home price | Avg. bill | Customers in TX |
|---|---|---|---|
| City of San Antonio (TX) Municipal | 13.0¢ Jan–Aug 2026 | $133 | 865,914 |
| Pedernales Electric Coop, Inc. Cooperative · serves Bexar | 12.2¢ 2024 | $146 | 405,587 |
| Guadalupe Valley Elec Coop Inc. Cooperative · serves Bexar | 12.5¢ 2024 | $149 | 92,189 |
| Bandera Electric Coop, Inc. Cooperative · serves Bexar | 12.4¢ 2024 | $146 | 35,346 |
| Karnes Electric Coop Inc. Cooperative · serves Bexar | 9.9¢ 2024 | $145 | 13,222 |
Utilities are matched to this ZIP code by NREL’s ZIP–utility table and the EIA service-territory list for Bexar; county matches may serve only part of the area. Prices are each utility’s average residential revenue per kWh.
Texas price trend
Hover or tap the chart for exact monthly values. Source: EIA-861M (monthly, latest months preliminary); forecast: EIA Short-Term Energy Outlook (October 2026) for the West South Central region, which includes Arkansas, Louisiana, Oklahoma, Texas.
Averages, not a quote. Prices here are what each utility’s residential customers paid on average (revenue ÷ kWh sold, fixed charges included), as reported to the U.S. Energy Information Administration. Your own rate depends on your plan, season and usage — check your bill or your utility’s tariff.
Questions about 78288
How much does electricity cost in 78288?
About 13.0¢ per kWh for homes (City of San Antonio (TX), Jan–Aug 2026, EIA). At 900 kWh a month that is roughly $117.
Who is the electric utility for 78288?
City of San Antonio (TX), with about 865,914 residential customers in Texas; 4 other utilities also serve parts of the area.
Is electricity in TX getting more expensive?
The Texas residential average was 15.9¢ per kWh in August 2026, up 3.3% from a year earlier; the U.S. average was 18.2¢.
Can I choose my electricity supplier in TX?
In the competitive ERCOT area of Texas, yes: compare retail electric provider plans at PowerToChoose.org, the official site of the Public Utility Commission of Texas.