Electricity rates in San Marcos, TX
77,830 residents · 2 ZIP codes
Most homes in San Marcos can’t choose an electricity provider
Here a local utility, usually city-owned or a member cooperative, both sells and delivers your power, and sets its own rates. There are no retail plans to compare.
Utilities with service areas around San Marcos:
- Pedernales Electric Cooperative
- Bluebonnet Electric Cooperative
- Guadalupe Valley Electric Cooperative
- AEP Texas Central
Service area boundaries are approximate. Your bill shows which utility serves your address.
Typical plan price today where Texans can choose a provider.
Texas average actually paid, July 2026 (U.S. EIA).
Homes in San Marcos
71% of the 28,013 households in San Marcos heat with electricity, more than the Texas average of 61%. The heating mix helps explain why your winter electricity use may differ from a county-wide weather model; it does not predict a bill for an individual home. 69% of households rent, and half the homes were built before 2001.
| Measure | San Marcos | Texas |
|---|---|---|
| Homes heated with electricity | 71% | 61% |
| Homes heated with natural gas | 26% | 35% |
| Households that rent | 69% | 37% |
| Single-family houses | 40% | 67% |
| Mobile homes | 2% | 6% |
| Median year built | 2001 | 1992 |
| Median rooms per home | 4.5 | 5.4 |
Source: U.S. Census Bureau, American Community Survey, 2020–2024 5-year estimates. City figures are survey estimates with a margin of error.
Power outages in Hays County
In 2025 the average customer in Hays County spent about 1.9 hours without power (Texas average: 4.6 hours). The worst day of the last five years was February 16, 2021, when 53,598 customers (75%) lost power.
| Year | Hours without power per customer | Days with major outages |
|---|---|---|
| 2025 | 1.9 | 5 |
| 2024 | 1.8 | 3 |
| 2023 | 10.2 | 13 |
Major outage: at least 5% of the county’s 71,175 customers without power at once. Source: EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0), built from utility outage maps; coverage of some utilities may be incomplete.
ZIP codes in San Marcos
2 ZIP codes associated with San Marcos. Confirm service at your exact address.
- 78656
- 78666
Questions people ask
Can I choose my electricity provider in San Marcos?
In most of San Marcos, no: a local utility sells and delivers power. Some addresses near the city edge may be in a competitive area. Your bill shows your utility.
Why can’t everyone in Texas choose?
When Texas opened its electricity market in 2002, city-owned utilities and co-ops could decide whether to join. Most chose not to, so they set their own rates.