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Best States for Solar in 2026, Analysis by the Numbers

Updated April 2026 · PlainSolarData

Download the compiled EIA solar nameplate extract cited on this page: eia-solar-state-capacity.csv (CC0; underlying EIA, NREL, and DSIRE fields remain public-source).

Key Takeaway

The best state for solar is not necessarily the sunniest. Financial return depends on four factors: electricity rate, net metering policy, state incentives, and solar resource. States like Massachusetts and New Jersey rank among the best for solar ROI despite less sunshine than Arizona, because their high electricity rates and strong incentives more than compensate. This analysis uses PlainSolarData's state-level data to rank all 50 states across these dimensions.

The Four Factors That Determine Solar ROI

Every state-level solar analysis ultimately reduces to four variables. Understanding their relative importance is more useful than memorizing a ranked list, because your personal situation may weight these differently.

1. Electricity Rate (Most Important)

The price you pay per kilowatt-hour determines how much each unit of solar production is worth to you. States with rates above 20 cents/kWh, including Hawaii (38+), California (30+), Connecticut (28+), Massachusetts (27+), and New York (22+) - generate the highest dollar savings per installed watt of solar capacity. At 30 cents/kWh, a typical 8 kW residential system producing 10,000 kWh annually saves $3,000/year in avoided electricity purchases. The same system in a state at 12 cents/kWh saves only $1,200.

2. Net Metering Policy

Net metering determines how much you are compensated for excess solar energy exported to the grid. States with full retail net metering, where exports are credited at the same rate you pay, effectively turn the grid into a free battery. States with reduced or no net metering force solar owners to either consume all production in real-time or accept below-retail compensation for exports. See our full net metering comparison for current policies in all 50 states.

3. State Incentives

The federal residential solar tax credit (§25D) applied nationwide through 2025 and has since ended, so state-level incentives now create the variation. Some states add their own tax credits, direct rebates, performance-based incentives, or SREC markets that can reduce the net cost of solar by an additional 10-30%. States with the richest incentive stacks include Massachusetts (SMART program), New York (NYSERDA incentives), Illinois (Illinois Shines), and Maryland (state grant program). Full incentive guide here.

4. Solar Resource (Irradiance)

Sunlight does matter, a system in Arizona produces roughly 40% more energy annually than the same system in Michigan. But because electricity rates in Michigan are nearly double those in many Sun Belt states, the financial return gap is narrower than the production gap. Solar resource is the least important of the four factors for financial return, though it matters most for energy independence and environmental impact calculations.

Top-Tier States for Solar (Fastest Payback)

Based on PlainSolarData's state-level analysis, the following states consistently rank highest for residential solar ROI when all four factors are combined. Explore each state's full data on our state rankings page.

  • Hawaii - The nation's highest electricity rate (38+ cents/kWh) makes every kWh of solar production worth roughly triple the national average, giving Hawaii the fastest modeled payback of any state (5.2 years) on PlainSolarData's own live state rankings.
  • Massachusetts - High electricity rates, full net metering, SMART performance incentives, and an active SREC-II market create one of the shortest payback periods in the nation despite moderate sunshine.
  • California - Abundant sunshine, the highest installed base of residential solar, and strong (though reduced under NEM 3.0) incentive structure. Battery storage is increasingly important here under NEM 3.0.
  • New Jersey - Very high electricity rates, full net metering through successor programs, and a robust SREC market (Transition Renewable Energy Certificates).
  • New York - NYSERDA incentives, high Con Edison rates in the metro area, and full net metering. Payback varies significantly between upstate (lower rates, more sunshine) and downstate (higher rates, less roof space).
  • Arizona - Exceptional solar resource (highest irradiance in the continental U.S.), moderate electricity rates, and reasonable net metering policies in most utility territories.
  • Connecticut - Among the highest electricity rates in the country (28+ cents/kWh), creating strong dollar savings despite New England weather. Net metering is intact.

Middle-Tier States: Solid but Situation-Dependent

These states offer good solar economics for many homeowners, but individual circumstances (utility territory, roof orientation, usage patterns) determine whether the investment is compelling:

  • Texas - Excellent sunshine, growing solar market, but no statewide net metering law. Economics depend entirely on your retail electricity provider's buyback rate. Some REPs offer competitive buyback; others do not.
  • Florida - Strong solar resource, full net metering (for now), no state income tax (so no state solar tax credit), and moderate electricity rates. Good for self-consumption; less strong for export economics.
  • Colorado - Good sunshine, Xcel Energy's solar programs, and growing community solar market. Payback periods of 7-10 years are typical.
  • Illinois - Illinois Shines incentive program, REC markets, and moderate electricity rates make solar viable, especially in ComEd territory.

States Where Solar Faces Headwinds

Solar can still work in these states, but payback periods are typically longer (10+ years) due to one or more unfavorable factors:

  • Pacific Northwest (WA, OR) - Cheap hydropower keeps electricity rates low (10-13 cents/kWh), reducing the financial case for solar. Lower irradiance compounds the issue. Oregon's incentives help but cannot fully overcome the rate disadvantage.
  • Louisiana, Mississippi, Alabama - Low electricity rates, limited or no net metering, minimal state incentives. These states combine unfavorable policy with moderate sunshine to produce long payback periods.
  • Idaho, Wyoming, Montana - Low electricity rates and sparse incentive programs. Solar resource is decent in parts of these states, but the financial math is challenging without utility rate pressure.

Even in these states, solar can make financial sense for homeowners with above-average electricity usage, time-of-use rate structures, or plans to stay in their home for 15+ years. High electricity rates and state incentives still bring payback within the warranty period of most panels in many states.

How to Evaluate Your State

Rather than relying on national rankings, evaluate your specific situation using PlainSolarData:

  1. Check your state's solar data page for current electricity rates, net metering status, and available incentives.
  2. Run the solar ROI calculator with your actual electricity bill and system size estimate.
  3. Review your state's full incentive directory for programs you may qualify for beyond the federal ITC.
  4. Read the net metering guide to understand how your specific utility handles solar exports.

Frequently Asked Questions

Is solar worth it in cloudy states?

Yes, in many cases. States like Massachusetts, New Jersey, and New York have lower solar irradiance than Sun Belt states, but their high electricity rates (20-30+ cents/kWh), strong net metering policies, generous state incentives, and active SREC markets can make solar financially competitive or even superior to sunnier states with low electricity rates and weak incentives. Solar panel output in the Northeast is typically 15-25% less than in the Southwest, but the financial return depends on the full equation, not just sunlight.

Which single factor matters most for solar ROI?

Electricity rate. The higher your utility charges per kWh, the more valuable each kWh your solar panels produce, either through direct self-consumption or net metering credits. A homeowner paying 30 cents/kWh in California gets twice the value per kWh produced compared to a homeowner paying 15 cents/kWh in a state with similar sunshine. After electricity rate, net metering policy is the second most impactful factor, followed by state incentive availability and solar resource (irradiance).

How does the federal ITC affect state rankings?

The federal residential solar tax credit (§25D, 30% through 2025) applied equally in all states, so it never changed relative rankings; it has since ended, leaving state incentives as the differentiator. However, the ITC interacts with state incentives, states that offer additional tax credits, rebates, or SRECs effectively stack on top of the federal benefit, creating a more powerful combined incentive in those states. The ITC makes solar viable in many states where it would not be without federal support.

Are there states where solar is a poor investment?

Solar has the weakest financial case in states that combine low electricity rates with minimal state incentives and no net metering. States like Louisiana (10 cents/kWh, limited net metering) and some parts of the Pacific Northwest (low rates due to hydropower) have the longest payback periods. However, even in these states, solar can make sense for homeowners with high usage, time-of-use rate structures, or strong interest in energy independence.

Sources: U.S. Energy Information Administration (EIA) - state electricity price data; Database of State Incentives for Renewables & Efficiency (DSIRE); National Renewable Energy Laboratory (NREL) - solar resource maps; PlainSolarData state-level analysis.

State policies, incentive programs, and utility rates change frequently. Verify current information with your state energy office and utility provider. This analysis is for informational purposes only.