GoSolarIndex

Solar by State

All 51 states + DC, ranked by real electricity rates, peak sun hours, and installed cost — sourced from EIA, NREL PVWatts, and LBNL Tracking the Sun. Click or tap any state row to view the full incentive breakdown, utility net metering rules, and payback estimate.

19.4¢

US avg electricity rate

9

states with real $/W data

12

states with full-retail NEM

5.8 h

most sun: Arizona

51 of 51 states
State▲Avg rate⇅Peak sun⇅$/W installed⇅Net meteringPerksBreakdown
Alabama(AL)16.4¢▲1.5%4.65 h—Varies by utility
View guide
Alaska(AK)28.2¢▲8.2%2.50 h—Varies by utility
1 incentiveCommunity solar
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Arizona(AZ)15.2¢▼3.4%5.78 h$4.05Varies by utility
3 incentivesVPPBattery rebate
View guide
Arkansas(AR)14.1¢▲7.1%4.41 h—Net billing
1 incentiveCommunity solar
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California(CA)34.7¢▲4.4%5.07 h$4.25Net billing
3 incentivesCommunity solarVPPBattery rebate
View guide
Colorado(CO)17.1¢▲9.9%4.83 h$4.70Full retail
6 incentivesCommunity solarVPPBattery rebate
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Connecticut(CT)24.3¢▼23.0%3.84 h—Net billing
3 incentivesCommunity solarBattery rebate
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Delaware(DE)19.3¢▲6.4%4.13 h$4.10Full retail
5 incentivesCommunity solarBattery rebate
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District of Columbia(DC)24.4¢▲19.4%4.15 h—Full retail
3 incentivesCommunity solarBattery rebate
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Florida(FL)15.1¢▲0.9%4.79 h—Full retail
2 incentivesCommunity solarVPPBattery rebate
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Georgia(GA)16.4¢▲9.2%4.50 h—Varies by utility
1 incentiveCommunity solarVPPBattery rebate
View guide
Hawaii(HI)52.7¢▲28.5%5.67 h—Varies by utility
1 incentiveCommunity solarVPPBattery rebate
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Idaho(ID)14.4¢▲21.0%4.62 h—Varies by utility
3 incentivesBattery rebate
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Illinois(IL)19.9¢▲7.1%4.14 h—Varies by utility
3 incentivesCommunity solarVPPBattery rebate
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Indiana(IN)17.5¢▲3.6%4.01 h—Varies by utility
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Iowa(IA)15.9¢▲12.5%4.02 h—Varies by utility
1 incentive
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Kansas(KS)15.7¢▲6.7%4.31 h—Net billing
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Kentucky(KY)14.3¢▲3.0%4.12 h—Varies by utility
Community solar
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Louisiana(LA)13.5¢▲1.7%4.65 h—Avoided cost
Community solar
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Maine(ME)29.6¢▲6.0%3.72 h—Net billing
2 incentivesCommunity solarVPPBattery rebate
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Maryland(MD)21.8¢▲14.9%4.14 h—Full retail
4 incentivesCommunity solarBattery rebate
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Massachusetts(MA)29.6¢▼1.0%3.84 h$3.90Full retail
5 incentivesCommunity solarVPPBattery rebate
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Michigan(MI)23.0¢▲13.6%3.80 h—Net billing
4 incentives
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Minnesota(MN)17.5¢▲10.6%3.80 h—Varies by utility
2 incentivesCommunity solar
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Mississippi(MS)14.9¢▲0.3%4.58 h—Net billing
1 incentive
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Missouri(MO)16.2¢▲24.7%4.26 h—Avoided cost
Battery rebate
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Montana(MT)15.1¢▲17.5%3.99 h—Full retail
1 incentive
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Nebraska(NE)13.3¢▲0.8%4.24 h—Varies by utility
2 incentivesCommunity solar
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Nevada(NV)13.1¢▼1.4%5.27 h—Varies by utility
3 incentives
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New Hampshire(NH)27.0¢▲12.4%3.79 h$3.52Varies by utility
2 incentivesCommunity solar
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New Jersey(NJ)24.9¢▲21.8%3.99 h—Full retail
3 incentivesCommunity solarVPPBattery rebate
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New Mexico(NM)15.1¢▲3.9%5.47 h$4.62Net billing
1 incentiveCommunity solar
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New York(NY)29.5¢▲10.5%3.82 h$4.26Full retail
7 incentivesCommunity solarBattery rebate
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North Carolina(NC)14.7¢▲2.9%4.46 h—Varies by utility
3 incentivesVPPBattery rebate
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North Dakota(ND)14.1¢▲7.8%3.87 h—Avoided cost
1 incentive
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Ohio(OH)19.2¢▲12.3%3.91 h—Avoided cost
2 incentives
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Oklahoma(OK)14.3¢▲10.7%4.70 h—Avoided cost
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Oregon(OR)16.3¢▲2.6%3.77 h—Full retail
4 incentivesCommunity solarVPPBattery rebate
View guide
Pennsylvania(PA)21.7¢▲12.6%3.96 h—Full retail
1 incentive
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Rhode Island(RI)29.2¢▲0.8%3.86 h—Net billing
5 incentivesCommunity solarVPPBattery rebate
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South Carolina(SC)15.6¢▲0.9%4.58 h—Net billing
3 incentivesCommunity solarVPP
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South Dakota(SD)15.4¢▲7.2%4.14 h—No mandate
1 incentive
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Tennessee(TN)14.1¢▲2.5%4.25 h—No mandate
1 incentiveCommunity solar
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Texas(TX)15.9¢▲2.6%4.74 h$3.85Varies by utility
3 incentivesVPPBattery rebate
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Utah(UT)13.4¢▲6.1%4.71 h—Net billing
1 incentiveCommunity solarVPPBattery rebate
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Vermont(VT)24.4¢▲2.9%3.61 h—Varies by utility
2 incentivesVPPBattery rebate
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Virginia(VA)17.2¢▲12.8%4.27 h—Full retail
2 incentivesCommunity solarVPP
View guide
Washington(WA)14.9¢▲9.2%3.34 h—Varies by utility
1 incentiveCommunity solarVPP
View guide
West Virginia(WV)15.4¢▼4.5%3.96 h—Varies by utility
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Wisconsin(WI)19.6¢▲3.3%3.86 h—Varies by utility
3 incentives
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Wyoming(WY)15.2¢▲10.3%4.57 h—Varies by utility
View guide

Electricity rates: EIA Form 861 / OpenEI URDB, 12-month avg. Peak sun hours: NREL PVWatts v8. Installed cost: LBNL Tracking the Sun (median, residential, 2023–2024 installs where sample ≥ 20 systems). "—" means fewer than 20 systems in dataset for that state. Click any row or button to view that state's full guide.

How we pick the numbers

  • Electricity rate: EIA Form 861 monthly data (residential sector), 12-month rolling average. Year-on-year change compared to the same month 12 months prior.
  • Peak sun hours: NREL PVWatts v8, state centroid, fixed-tilt south-facing at latitude, direct normal irradiance (kWh/m²/day annual mean).
  • Installed cost per watt: LBNL Tracking the Sun database, median residential system cost for 2023–2024 installs. States with fewer than 20 systems in the sample show "—" — we don't publish thin averages.
  • Net metering policy: Manually verified from state PUC orders, DSIRE, and utility tariff filings as of September 2026. Policies change — always confirm with your installer before finalising contracts.
  • Incentives: Count of open (non-expired, non-closed) state and utility programs. Federal 30% ITC applies to all states for systems completed before January 1, 2026. See each state page for full details.

Not sure which numbers apply to your roof?

The solar calculator lets you enter your actual monthly usage and your installer's quote to get a personalised payback estimate — covers all 50 states with real electricity-rate and sun-hour data.