Solar Economics
Solar Panel ROI by State 2026 — All 50 States Ranked by Payback Years
February 9, 2026 · HavenCostGuide editorial
Quick answer · 2026
All 50 US states ranked by 2026 solar panel payback years. Hawaii fastest at 3.1 years, North Dakota slowest at 11.5. Built on EIA electric rates × NREL sun hours × state-by-state net-metering tariffs (incl. CA NEM 3.0). Full state table + per-bill savings calculator.
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