Solar Panel Cost & Savings in Castro County, TX
A typical 6 kW home solar system in Castro County pays back in 13.1 years and saves an estimated $22,401 over 25 years after the federal tax credit.
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Is solar worth it in Castro County?
Castro County sits 30% above the national median for solar production, and homes here pay 9.2¢ per kWh. That combination puts payback at about 13.1 years — a Fair Solar Value.
Because the 30% federal tax credit applies through 2032, a system installed now is credited $5,400, dropping the net cost to $12,600. Over 25 years, escalating utility rates push estimated savings to $22,401.
Frequently asked
What's the payback period for solar in Castro County?
At Castro County's electricity rate of 9.2¢/kWh and local sun levels, a typical 6 kW system pays for itself in about 13.1 years after the 30% federal tax credit — a "Fair" Solar Value rating.
How much does solar cost in Castro County after the tax credit?
A 6 kW reference system runs about $18,000 gross. The 30% federal Investment Tax Credit brings the net cost down to roughly $12,600 before any state or local incentives.
Is solar worth it at 9.2¢/kWh?
Yes — higher rates and good sun mean every kWh you generate offsets more, shortening payback and growing 25-year savings. Estimated 25-year savings: $22,401.
Does Texas have net metering?
Net-metering rules vary by utility and change over time. Many Texas utilities credit excess generation, which improves these economics. Confirm current terms with a local installer when you compare quotes.
Where does this estimate come from?
Production is modeled from NREL PVWatts v8 for Castro County (sun factor +30% vs. the national median), and the electricity rate from NREL Utility Rates v3. Updated June 2026.