Solar · TX · 2026
Average Solar Panel Cost in San Antonio, TX — 2026
The average cost to install solar panels in San Antonio is $27,500 gross ($19,250 after the 30% federal ITC) in 2026. Payback period: ~11.3 years. Get free installer quotes.
Average System Cost
A typical 10 kW residential solar system in San Antonio, TX costs $27,500 gross ($19,250 after the 30% federal ITC) in 2026. Annual electricity savings are approximately $1,710, giving an estimated payback period of ~11.3 years on a cash purchase. Use the solar payback calculator for a full breakdown including state incentives.
Average Solar Panel Cost in San Antonio, TX (2026) — Data Breakdown
| Item | Amount |
|---|---|
| Gross system cost (10 kW) | $27,500 |
| Federal ITC (30%) | -$8,250 |
| Net cost after ITC | $19,250 |
| Annual electricity savings | $1,710/yr |
| Estimated payback | ~11.3 years |
| Cost per watt | ~$2.75/W installed |
Methodology: Based on SEIA 2026 average installed cost data for TX, EIA state electricity rate, and NREL PVWatts production model. Actual costs vary by installer, roof type, and system configuration.