States › Texas › City of San Marcos
municipal utility · EIA utility 28978
City of San Marcos
Average price is revenue divided by sales for the sector and year; it is not a tariff rate. Reliability figures are as reported by utilities to EIA on Form 861 and may use different calculation methods. Annual figures: Form EIA-861 for 2024, final release. Monthly state figures run to July 2026.
In its Form EIA-861 filing for 2024, City of San Marcos, a municipal utility, reported 22,261 residential customers in Texas, with a service territory that touches 1 county.
Its average residential price that year was 12.03¢ per kilowatthour, 19% below the Texas average of 14.94¢ and 27% below the US average of 16.48¢. The figure is residential revenue divided by residential sales, so it folds in fixed charges, riders and every rate schedule the utility bills under.
That works out to an average residential bill of $109.61 a month on average use of 911 kWh a month. Across Texas the average bill was $163.72 on 1,096 kWh, so a bill gap reflects how much power households use as well as what each kilowatthour costs.
For reliability it reported a SAIDI of 127.1 minutes per customer with major event days included, calculated under IEEE 1366 standard. The median among Texas utilities reporting was 200.2 minutes with major event days; this utility's figure is 37% below that median.
The average price is down 9.8% on 2019, against up 27.0% for Texas as a whole, and up 7.5% on 2023. EIA's early release for 2025, which has not been fully edited, shows 12.73¢.
Compared with Texas, the US and other municipal utilities
| Measure, 2024 | This utility | Municipal utilities, US median | Texas | United States |
|---|---|---|---|---|
| Average residential price per kWh | 12.03¢ | 12.45¢ | 14.94¢ | 16.48¢ |
| Average monthly residential bill | $109.61 | $113.02 | $163.72 | $142.26 |
| Average monthly use, kWh | 911 | 905 | 1,096 | 863 |
| Residential price change, 1 year | +7.5% | — | +3.3% | +3.0% |
| Residential price change, 5 years | -9.8% | — | +27.0% | +26.7% |
| SAIDI, all events (minutes) | 127.1 | 64.4 | 200.2 median | 184.5 median |
| SAIDI, without major event days | — | 40.3 | 165.5 median | 99.8 median |
State and US prices, bills and use are EIA's own averages over every customer. The ownership column and the reliability columns are medians across utilities with at least 1,000 residential customers, computed on this site from the final 2024 file. Among the 17 filings by municipal utilities in Texas, the median price was 12.69¢. In Texas this utility's price ranks 106 of 136, counting from the highest.
Average price by year
City of San MarcosTexas averageUS average
Year by year
| Year | ¢ per kWh | Texas ¢ | Monthly bill | kWh a month | Residential customers | All sales |
|---|---|---|---|---|---|---|
| 2025 early release | 12.73¢ | 15.47¢ | $116.47 | 915 | 22,362 | 651.4 GWh |
| 2024 | 12.03¢ | 14.94¢ | $109.61 | 911 | 22,261 | 645.3 GWh |
| 2023 | 11.19¢ | 14.46¢ | $108.85 | 973 | 22,014 | 652.3 GWh |
| 2022 | 10.17¢ | 13.76¢ | $102.39 | 1,007 | 21,873 | 661.8 GWh |
| 2021 | 9.85¢ | 12.11¢ | $91.02 | 924 | 21,698 | 623.3 GWh |
| 2020 | 9.47¢ | 11.71¢ | $86.86 | 917 | 21,415 | 609.5 GWh |
| 2019 | 13.34¢ | 11.76¢ | $129.21 | 968 | 21,073 | 637.6 GWh |
| 2018 | 12.55¢ | 11.20¢ | $121.95 | 972 | 20,960 | 631.6 GWh |
| 2017 | 13.34¢ | 11.01¢ | $124.17 | 931 | 20,653 | 609.9 GWh |
| 2016 | 12.71¢ | 10.99¢ | $118.25 | 930 | 20,439 | 609.7 GWh |
| 2015 | 14.92¢ | 11.56¢ | $143.05 | 959 | 20,123 | 595.2 GWh |
| 2014 | 13.94¢ | 11.86¢ | $135.64 | 973 | 19,399 | 588.3 GWh |
| 2013 | 12.61¢ | 11.35¢ | $118.29 | 938 | 18,668 | 565.3 GWh |
Bundled residential service only in the price, bill and use columns. Bill = residential revenue ÷ customers ÷ 12; use = residential sales ÷ customers ÷ 12. EIA describes its early release as not fully edited; it is shown for this utility alone and enters no average, median or rank on this site.
Sales by sector, 2024
| Sector | Customers | Sales | Share of sales | Revenue | ¢ per kWh, bundled |
|---|---|---|---|---|---|
| Residential | 22,261 | 243.4 GWh | 38% | $29,281,000 | 12.03¢ |
| Commercial | 3,761 | 399.4 GWh | 62% | $41,801,000 | 10.47¢ |
| Industrial | 2 | 2.4 GWh | 0% | $240,000 | 9.91¢ |
Customers, sales and revenue count every service type the utility reported (bundled, energy-only and delivery-only). The price column uses bundled service alone, because part-bill revenue would understate it. Sources of energy: 682.5 GWh in total, of which 0% was its own net generation and 682.5 GWh was bought wholesale; summer peak demand 139 MW.
Reliability
Minutes of sustained interruption per customer in 2024, as the utility reported them under IEEE 1366 standard. SAIFI: 1.43 interruptions per customer with major event days; CAIDI 88.8 minutes per interruption. EIA's Texas total across all reporting utilities was 1,270.6 minutes with major event days and 129.4 without. Major event days are storms and similar events that a utility's chosen method sets apart; methods differ, so treat comparisons as approximate. What SAIDI and SAIFI mean.
| Year | SAIDI, all events | SAIDI, no major events | SAIFI, all events | SAIFI, no major events | Method |
|---|---|---|---|---|---|
| 2025 early release | 136.5 | — | 1.77 | — | IEEE 1366 |
| 2024 | 127.1 | — | 1.43 | — | IEEE 1366 |
| 2023 | 26.7 | — | 0.19 | — | IEEE 1366 |
| 2022 | 19.1 | — | 0.21 | — | IEEE 1366 |
| 2021 | 269.5 | — | 2.24 | — | IEEE 1366 |
| 2020 | 27.6 | — | 0.32 | — | IEEE 1366 |
| 2019 | 32.5 | — | 0.24 | — | IEEE 1366 |
| 2018 | 57.7 | — | 0.37 | — | IEEE 1366 |
| 2017 | 65.5 | — | 0.56 | — | IEEE 1366 |
| 2016 | 34.9 | — | 0.37 | — | IEEE 1366 |
| 2015 | 49.9 | — | 0.53 | — | IEEE 1366 |
| 2014 | 33.7 | — | 0.39 | — | IEEE 1366 |
| 2013 | 14.0 | — | 0.20 | — | IEEE 1366 |
Counties in its service territory
Counties the utility listed on Form EIA-861 for 2024. Listing a county does not mean the utility serves all of it.
Other utilities in Texas
| Utility | Ownership | Residential customers | ¢ per kWh | Monthly bill | SAIDI, all events | SAIDI, no major events |
|---|---|---|---|---|---|---|
| Kerrville Public Utility Board | Municipal | 20,278 | 8.71¢ | $102.34 | 26.8 | 18.6 |
| City of Georgetown | Municipal | 29,904 | 13.87¢ | $125.42 | 39.9 | 39.9 |
| City of Floresville | Municipal | 15,797 | 12.37¢ | $168.76 | 64.4 | 64.4 |
| City of Greenville | Municipal | 15,165 | 14.95¢ | $156.15 | 82.9 | 16.1 |
| Weatherford Mun Utility System | Municipal | 14,466 | 12.69¢ | $148.91 | 40.0 | 21.0 |
| City of College Station | Municipal | 42,995 | 14.57¢ | $135.47 | 22.8 | 16.3 |
| Brownsville Public Utilities Board | Municipal | 48,146 | 12.70¢ | $141.78 | 160.8 | 76.3 |
| City of New Braunfels | Municipal | 53,975 | 13.18¢ | $138.91 | 76.4 | 43.5 |
All Texas utilities · Municipal utilities nationwide
Questions and answers
How much does electricity cost from City of San Marcos?
Residential customers paid an average of 12.03¢ per kilowatthour in 2024. EIA derives this by dividing residential revenue by residential sales; it is an average across all rate schedules and charges, not a tariff rate.
How does that compare with Texas?
The Texas average residential price in 2024 was 14.94¢ and the US average 16.48¢; City of San Marcos was 19% below the state figure. Among 136 utility filings with a bundled residential price in Texas, it had the 106th highest.
What is the average City of San Marcos bill?
$109.61 a month in 2024, on average residential use of 911 kWh a month (annual revenue and sales divided by customers and by twelve). The Texas average was $163.72 on 1,096 kWh.
How reliable is City of San Marcos service?
It reported 127.1 minutes of interruption per customer (SAIDI) including major event days, with 1.43 interruptions per customer (SAIFI) in 2024. Utilities calculate these under differing methods, so comparisons are approximate.
Is the City of San Marcos price rising?
The average residential price was up 7.5% in 2024 compared with 2023 and down 9.8% compared with 2019. EIA's early, not fully edited release for 2025 shows 12.73¢.
Which counties does City of San Marcos serve?
Its Form EIA-861 service territory lists 1 county: Hays County, TX. A county can appear in several utilities' territories.
Provenance
Source: U.S. Energy Information Administration. Annual figures are from Form EIA-861 (sales to ultimate customers, reliability, operational data and service territory files), final release for 2024, respondent "City of San Marcos - (TX)", utility number 28978; the 2025 row is from EIA's early release. State and US averages are from the Form EIA-861M sales and revenue workbook, published through July 2026. All are US government works in the public domain. Page built 1 Oct 2026. Errors in processing are corrected at the next build; see corrections. For tariffs and rate schedules, consult the utility or the state utility commission.