Texas · Municipal
City of San Marcos - (TX)
12.73¢ per kWh, bundled, EIA-861 2025. Average bill $116.47 at 915.1 kWh a month, across 22,362 customers on that row.
Texas averaged 15.40¢/kWh and $170.95 a month. The United States averaged 17.23¢/kWh and $150.68. State and national figures come from EIA's Average Bill file.
Revenue divided by sales, EIA-861 Sales to Ultimate Customers, 2025, released October 7, 2026. Texas wires utilities come from the Delivery Companies file. The price and bill use bundled service. Customer count: 22,362, the largest residential count across service types.
Estimate a bill
The figure below is this utility's 2025 EIA residential average.
2025 EIA average
$127.30
12.73¢/kWh × 1,000 kWh. Bundled residential average, EIA-861 2025. The customer charge is already folded into this average, so it stands beside a tariff total rather than being added to it.
Annual history
| Year | ¢/kWh | Avg. bill | Avg. kWh | Customers |
|---|---|---|---|---|
| 2015 | 14.92¢ | $143.05 | 959.1 | 20,123 |
| 2016 | 12.71¢ | $118.25 | 930.1 | 20,439 |
| 2017 | 13.34¢ | $124.17 | 931.2 | 20,653 |
| 2018 | 12.55¢ | $121.95 | 972.1 | 20,960 |
| 2019 | 13.34¢ | $129.21 | 968.3 | 21,073 |
| 2020 | 9.47¢ | $86.86 | 917.1 | 21,415 |
| 2021 | 9.85¢ | $91.02 | 924.4 | 21,698 |
| 2022 | 10.17¢ | $102.39 | 1,006.7 | 21,873 |
| 2023 | 11.19¢ | $108.85 | 972.7 | 22,014 |
| 2024 | 12.03¢ | $109.61 | 911.2 | 22,261 |
| 2025 | 12.73¢ | $116.47 | 915.1 | 22,362 |
EIA-861, 2015–2025, using the same service type as the 2025 figure. A blank year means that service was not in the file.
Counties
Hays.
EIA-861 Service Territory, 2025. A listed county is the county EIA recorded. It does not mean every address in the county is served. Open this utility in the bill calculator · Rate history tool