Solar Cost Index

Solar payback by state (2026)

Without the federal 25D credit, payback for buying solar outright depends mostly on local electricity prices and how exported power is credited. States with high rates and full net metering still pay back fastest. Ranked by estimated payback for a typical home:

StateRateTypical billPayback (buy)25-yr net
California31¢$1649 yrs$30,800
Massachusetts30¢$1779 yrs$47,600
New York25¢$14510 yrs$36,700
New Jersey20¢$13611 yrs$32,400
Arizona15¢$15812 yrs$30,900
Florida15¢$16512 yrs$37,800
Texas15¢$17014 yrs$27,300
Illinois17¢$11915 yrs$18,700

Download this table as JSON. How we calculate.