Solar · Published 2026-07-07
The 10 Cheapest States to Go Solar (2026)
The ten cheapest states for a home solar installation, ranked from the same July 2026 dataset that powers our calculators — with full state breakdowns.
Figures price a standard 8 kW system at each state’s average installed cost per watt, before incentives — with the federal credit gone since 2026, state economics matter more than ever. Here are the ten cheapest states, every figure linking to that state's full breakdown.
| # | State | 8 kW system, installed (before incentives) |
|---|---|---|
| 1 | Arizona | $21,600 |
| 2 | Louisiana | $22,000 |
| 3 | Mississippi | $22,000 |
| 4 | New Mexico | $22,000 |
| 5 | Texas | $22,000 |
| 6 | Florida | $22,400 |
| 7 | Kentucky | $22,400 |
| 8 | Nevada | $22,400 |
| 9 | Oklahoma | $22,400 |
| 10 | Arkansas | $22,800 |
#1: Arizona
Arizona is one of the cheapest states in the country for a home solar installation, ranking #1 of 50 at $21,600 — about 11% below the national average.
#2: Louisiana
Louisiana is one of the cheapest states in the country for a home solar installation, ranking #2 of 50 at $22,000 — about 10% below the national average.
#3: Mississippi
Mississippi is one of the cheapest states in the country for a home solar installation, ranking #3 of 50 at $22,000 — about 10% below the national average.
Run your own numbers
Installed price isn’t destiny — quotes for the same roof routinely differ 20%+, and sun hours and electricity rates decide the payback.
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