Independent profile. Kilowatt Atlas is not affiliated with City of San Marcos, does not use its logo or branding and cannot take payments, start service or look up accounts. Figures come from public federal data for 2025.
Residential customers
22 thousand
22,362 homes
Average price
12.73 cents
Texas average 15.40
Average bill
$116.47
Per month at 915 kWh
Price rank
23 of 64
Lowest to highest in Texas
City of San Marcos rates and average bill
City of San Marcos reported 22,362 residential customers on bundled service in 2025, using 915 kWh a month on average at 12.73 cents per kWh. Bundled means the utility supplies the energy and delivers it, so the price covers both. Among the 64 Texas utilities with at least 10,000 bundled residential customers, City of San Marcos ranks 23 from the lowest price.
| Average | Cents per kWh | kWh per month | Monthly bill |
|---|---|---|---|
| City of San Marcos | 12.73 | 915 | $116.47 |
| Texas (all utilities) | 15.40 | 1,110 | $170.95 |
| United States | 17.23 | 874 | $150.68 |
Source: U.S. Energy Information Administration, Form EIA-861 (final 2025 data), sales to ultimate customers. Price is revenue divided by sales and includes fixed charges.
Service area
EIA lists the counties where City of San Marcos has distribution equipment. That covers 1 county in Texas. A county can be served by more than one utility, so confirm your address with the utility or your bill.
Texas (1 county)
Hays
Not sure who serves your address? Use find my electric company.
Rate options and rooftop solar
- Time-of-use pricing. City of San Marcos does not report a residential time-of-use program in its 2025 EIA filing. Ask the utility, because programs change. How time-of-use rates work.
- Rooftop solar and net metering. EIA shows 135 residential net-metered systems on the City of San Marcos grid in 2025, with 0.8 megawatts of capacity. How net metering works.
Who owns and regulates it
Owned and run by a city or town. A city council or utility board usually sets the rates, and state commissions often have limited authority over it.
For questions about state consumer protections, see the Public Utility Commission of Texas.
City of San Marcos is a municipal utility based in Texas.
City of San Marcos operates in the ERCOT power market. Power markets set wholesale costs, but your retail rate is set by the rules described above.
City of San Marcos compared with Texas
Texas has 82 utilities with residential customers in the 2025 EIA data. City of San Marcos is 43rd by size and serves about 0.17% of the state's homes. Its price of 12.73 cents per kWh is 0.32 cents above the median of 15 other municipal utilities in Texas (12.40 cents). At $116.47 a month, an average City of San Marcos home pays about $654 a year less than the Texas average of $170.95, and uses 195 kWh a month less. City of San Marcos lists distribution equipment in a single county, so its service area is easy to check against your address. 135 of its residential customers use net metering, or 6.0 per 1,000 homes, against 10.9 for Texas as a whole.
Source: U.S. Energy Information Administration, Form EIA-861 (final 2025 data). Peers are other utilities of the same type in Texas with at least 1,000 residential customers and a reported price.
Other Texas utilities
| Utility | Type | Homes | Cents per kWh |
|---|---|---|---|
| City of San Marcos | Municipal | 22,362 | 12.73 |
| Southwest Arkansas Electric Cooperative Corporation | Cooperative | 26,288 | 13.89 |
| Cherokee County Electric Cooperative Association | Cooperative | 22,613 | 14.76 |
| Houston County Electric Cooperative | Cooperative | 21,761 | 15.28 |
| Victoria Electric Cooperative | Cooperative | 21,716 | 12.40 |
| Jasper-Newton Electric Cooperative | Cooperative | 21,316 | 14.10 |
See every one on the electric companies in Texas page.
Official site and where to get help
Kilowatt Atlas is not City of San Marcos and does not take payments, start service or manage accounts. To pay a bill, report an outage or start service, use the website, app or phone number printed on your bill. Be careful with search ads and lookalike sites that offer to pay your bill for a fee.
- Want to understand a line on your bill? Read how to read your electric bill.
- Think your bill is high? Try the bill checker.
- Texas allows retail choice in part or all of the state. See the provider guide.
City of San Marcos questions
What is the average residential electric rate for City of San Marcos?
City of San Marcos residential customers on bundled service paid an average of 12.73 cents per kWh in 2025, with average use of 915 kWh a month and an average bill of $116.47 (EIA Form EIA-861). The Texas average was 15.40 cents.
How many customers does City of San Marcos have?
EIA reports about 22,362 residential customers for City of San Marcos in 2025.
Who regulates City of San Marcos?
Owned and run by a city or town. A city council or utility board usually sets the rates, and state commissions often have limited authority over it. See the regulator for Texas on the Texas state page.