Texas sits in a near the national average electricity rate zone — homeowners pay roughly 14.7 cents per kilowatt-hour for residential service in 2026, based on the most recent twelve-month EIA average. Annual sun-hour availability is abundant at about 5.4 kWh per square meter per day, the figure NREL publishes from its National Solar Radiation Database for state-level global horizontal irradiance.
Why the rate matters
That rate matters more than installers usually admit. A high local kWh price is the single biggest accelerator of payback, because every kilowatt-hour a panel produces offsets a kilowatt-hour you would otherwise have bought. At 14.7¢/kWh, every 1,000 kWh of annual production is worth about $147 in year-one bill savings. Rates also tend to rise — the US residential rate has climbed roughly 3% per year on average over the last decade — so the gap between “solar production” and “grid purchase” widens every year you own the system.
Sun hours and what they predict
Sun-hour numbers describe how much solar energy lands on a flat horizontal surface in your state on an average day across the year. A south-facing roof at typical pitch will outperform that flat-plane number; a heavily shaded or north-facing roof will fall short. NREL’s PVWatts model, which this site uses for ZIP-level estimates, runs hourly typical-meteorological-year data through a system performance model — that’s why the same 5.4 kWh/m²/day translates to different annual output depending on tilt, azimuth, and shading at your specific address.
What incentives still apply in 2026
State-level incentives in Texas in 2026: No statewide tax credit; utility-specific rebates (Oncor, AEP, CenterPoint) and retail provider buyback plans (Green Mountain, Octopus, Rhythm) replace traditional net metering; property tax exemption; ERCOT grid does not require utility approval for most residential interconnection. The federal Residential Clean Energy Credit (Section 25D, the 30% federal tax credit) expired for systems placed in service after December 31, 2025, so it is not part of any new-buyer math going forward. State, utility, and property-tax incentives now carry the load.
A representative payback estimate
For a representative 7 kW residential system installed at the 2026 national average of about $3.20 per DC watt, this page estimates roughly 10,762 kWh of annual production, year-one bill savings near $1582, and a payback window of about 12.3 years. These are modeled numbers, not quotes — your roof, shading, and utility rate plan can shift them up or down by 20% or more.
Texas-specific notes
Texas has no statewide solar tax credit and no traditional retail net metering — your buyback rate is set by your retail electricity provider. Shopping plans on Power to Choose with explicit solar buyback (Green Mountain, Octopus, Rhythm, and others) is part of the install decision, not an afterthought.