TNMP and solar
TNMP is an investor-owned utility serving about 237,930 homes in Texas. Here's what its rates and export rules mean for solar: for a typical customer, solar is worth it.
- Average price (2026 est.)
- 19.4¢22% above Texas average
- Typical bill
- $2231,151 kWh a month
- Exports credited
- ~31%No statewide net metering
- Typical payback
- 11.6 yrs4.5 kW, cash
Export rules for TNMP 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 TNMP home
| System | 4.5 kW (50% of 1,151 kWh/month) |
|---|---|
| Cost | $12,950 |
| First-year savings | $1,096 |
| Payback | 11.6 years |
| 25-year net | $20,069 |
Uses the utility's average price.
Solar adoption
- Homes with solar (2025)
- —
- Share of customers
- —
- Residential solar capacity
- —
- Residential customers
- 237,930
EIA-861, 2025. In competitive markets, some solar is reported by retail electricity providers instead.
Questions about TNMP and solar
Does TNMP have net metering?
TNMP 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 TNMP?
Residential customers paid an average of 18.7¢ per kWh in 2025 (EIA), about 19.4¢ adjusted to 2026. The typical home uses 1,151 kWh a month, a bill of about $223.
Is solar worth it with TNMP?
For a typical customer, solar is worth it: a 4.5 kW system costing about $12,950 pays back in about 11.6 years, with $20,069 net over 25 years.
How many TNMP customers have solar?
TNMP did not report residential net-metered solar to EIA for 2025, likely because retail electric providers report it in competitive markets.
Legal name: Texas-New Mexico Power Co (EIA ID 40051). Data: EIA-861 2025 and monthly data through 2026, state policy research October 2026.