City of San Marcos electricity rates
Municipal utility · Texas · ERCOT region · ERCOT
City of San Marcos is a city-owned municipal utility, governed locally rather than by the state commission, serving 22,362 homes in Texas. Its residential customers pay an average of 13.13¢/kWh including fixed and delivery charges, 27% less than the U.S. average.
Rate basis: EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend.
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City of San Marcos bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $65.65 | $10.40 |
| 1,000 kWh | $131.30 | $20.80 |
| 1,500 kWh | $196.95 | $31.20 |
| 2,000 kWh | $262.60 | $41.60 |
*Residential Services (effective 2014-03-01), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
City of San Marcos residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residential Services | 2014-03-01 | — | 2.08¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
City of San Marcos rate history
2015–2025: -15% change in the average residential rate (14.91¢ → 12.73¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | City of San Marcos | Texas avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 137 | 224 | 266 |
| Outages per customer (SAIFI) | 1.77 | 1.65 | 1.34 |
| Average restoration time (CAIDI) | 77 min | — | — |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across City of San Marcos's counties, customers averaged 113 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Hays | 113 | 53 | 10,623 | 2025-10-25 |
City of San Marcos service area
City of San Marcos serves Hays County in Texas and 2 ZIP codes.
Hays
Cities: San Marcos, Redwood
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 135 |
City of San Marcos at a glance
| Ownership | Municipal utility |
| Services | Distribution |
| Commercial rate | 11.26¢/kWh |
| Industrial rate | 10.81¢/kWh |
| Retail revenue (2025) | $75,544,000 |
| Electricity sold (2025) | 651,387 MWh |
| Peak demand | 134 MW summer · 139 MW winter |
| Line losses | 6.2% |
| Balancing authority | ERCO |
| EIA utility ID | 28978 |
Other utilities in Texas
Frequently asked questions
What is City of San Marcos's electricity rate?
City of San Marcos residential customers pay an average of 13.13¢ per kWh, all charges included (EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend). That's 18% below the Texas average of 15.96¢ and 27% below the U.S. average.
What is the average City of San Marcos electric bill?
About $120 a month. The average City of San Marcos home uses 915 kWh a month. At 1,000 kWh the bill would be about $131.
How many customers does City of San Marcos have?
City of San Marcos serves 22,362 residential customers and 26,154 customers in total in Texas, across 1 county.
How reliable is City of San Marcos?
In 2025, the average City of San Marcos customer was without power for 2 hr 17 min (SAIDI) over 1.77 interruptions (SAIFI), including major storms. The Texas average was 3 hr 44 min and the U.S. average 4 hr 26 min.
Does City of San Marcos offer net metering for solar?
City of San Marcos had 135 residential net-metered customers in 2025 with 0.8 MW of capacity. Estimate solar savings at this utility's rate.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with City of San Marcos before making decisions.