City of San Marcos and solar
City of San Marcos is a municipal utility serving about 22,362 homes in Texas. Here's what its rates and export rules mean for solar: for a typical customer, solar is not worth it.
- Average price (2026 est.)
- 13.2¢17% below Texas average
- Typical bill
- $121915 kWh a month
- Exports credited
- ~45%No statewide net metering
- Typical payback
- 17.4 yrs3.6 kW, cash
Export rules for City of San Marcos customers
No statewide net metering (Texas rule).
Texas has no statewide net metering. In the deregulated ERCOT market you pick a retail electricity provider, and a few offer 'solar buyback' plans (typically 3-9 c/kWh, some match retail). Municipal utilities and co-ops set their own rules, e.g., Austin Energy's Value of Solar credit.
Solar for a typical City of San Marcos home
| System | 3.6 kW (49% of 915 kWh/month) |
|---|---|
| Cost | $11,060 |
| First-year savings | $618 |
| Payback | 17.4 years |
| 25-year net | $6,368 |
Uses the utility's average price.
Solar adoption
- Homes with solar (2025)
- 135
- Share of customers
- 0.6%
- Residential solar capacity
- 1 MW
- Residential customers
- 22,362
EIA-861, 2025.
Cities served
Questions about City of San Marcos and solar
Does City of San Marcos have net metering?
City of San Marcos follows Texas's rules: Texas has no statewide net metering. In the deregulated ERCOT market you pick a retail electricity provider, and a few offer 'solar buyback' plans (typically 3-9 c/kWh, some match retail). Municipal utilities and co-ops set their own rules, e.g., Austin Energy's Value of Solar credit.
How much does electricity cost with City of San Marcos?
Residential customers paid an average of 12.7¢ per kWh in 2025 (EIA), about 13.2¢ adjusted to 2026. The typical home uses 915 kWh a month, a bill of about $121.
Is solar worth it with City of San Marcos?
For a typical customer, solar is not worth it: a 3.6 kW system costing about $11,060 pays back in about 17.4 years, with $6,368 net over 25 years.
How many City of San Marcos customers have solar?
About 135 homes had net-metered solar at the end of 2025, roughly 0.6% of residential customers (EIA-861).
Legal name: City of San Marcos - (TX) (EIA ID 28978). Data: EIA-861 2025 and monthly data through 2026, state policy research October 2026.