Solar in San Marcos, TX
With City of San Marcos's electricity at about 13.2¢ per kWh and 1,507 kWh of sun per kW, solar is not worth it for a typical San Marcos home today: about a 17.4-year payback.
- Payback, typical home
- 17.4 yrsTexas: 14 yrs
- 25-year net
- $6,368after paying $11,060
- Sun
- 1,507kWh per kW per year
- Electricity
- 13.2¢27% below U.S. average
A typical San Marcos home, by the numbers
| Utility | City of San Marcos |
|---|---|
| Electricity use | 915 kWh a month |
| Best-value system | 3.6 kW, about 8 panels, 5,426 kWh a year (49% of use) |
| Cost | $11,060 |
| First-year savings | $618 |
| Payback | 17.4 years |
| Exported power | No statewide net metering (Texas rule) |
Cash purchase, no federal credit, 2.9% yearly rate increases. Run it with your own numbers.
Homes in San Marcos
- Owner-occupied homes
- 31%
- Single-family detached
- 35%
- Median home value
- $310k
- Median year built
- 2001
- Population
- 70,897
- Roofs suitable for solar†
- 86%
Census ACS 2020–2024. †Share of 9,618 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Installers working in San Marcos
Public installation records for Texas don't name installers, so we can't rank local companies here. Browse installers in Texas.
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in San Marcos
Is solar worth it in San Marcos, TX?
For a typical home in San Marcos, solar is not worth it at 2026 prices: a 3.6 kW system costs about $11,060 after state incentives, saves about $618 in year one and pays back in about 17.4 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in San Marcos?
About 1,507 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 1% less than the Texas average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in San Marcos?
Most homes in San Marcos are served by City of San Marcos, at about 13.2¢ per kWh on average. Some areas are served by Bluebonnet Electric Cooperative, Pedernales Electric Cooperative.
How much do solar panels cost in San Marcos?
A fair cash price is around $2.60 per watt before incentives, so about $11,060 for a 3.6 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Kyle 17.7 yrs
- New Braunfels 16.4 yrs
- Canyon Lake 16.7 yrs
- Seguin 19.3 yrs
- Cibolo 17.4 yrs
- Schertz 17.4 yrs
- Austin 10.9 yrs
- Converse 13.4 yrs
- All of Texas
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.