Top US States For Solar Energy

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NerdWallet have compiled the top 5 states in the US for residential solar energy, according to four specific criteria. Top of the pile was California, thanks to a sunny location, the pioneering of solar leasing, and great cash-back incentives. Filling out the top 5 were Hawaii, Arizona, Maryland, and Delaware.

NerdWallet explained that they wanted to “combine the most recent and accurate data available to give homeowners a comprehensive look at key factors to consider when pondering the switch.” They then “compiled and quantified this key information as a guide for gauging solar advantages” in an individuals own state.

To compile their ranking of states, NerdWallet focused on four factors they felt were important for every homeowner to consider when looking at going solar;

  • Are your electricity bills expensive? Solar is most advantageous for consumers who already face increasingly expensive electricity bills. Whereas, if your electricity costs are already pretty low solar may not save you money (especially leasing). To gauge this factor, we analyzed the average monthly electric bill for households in every state.
  • Does your state offer economic incentives that make the switch worth it? Many states, notably Massachusetts, Maryland, New Jersey and New York, have made commitments to helping residents’ transition to solar and offer excellent incentives, tax rebates, grants, and subsidies for solar installation. The team at Solar Power Rocks has measured the quality of each state’s incentives to provide a comprehensive score for all 50 states. We included these scores to measure state economic support for residential solar.
  • Is your state sunny enough to obtain energy through solar? The more sun your area gets,the more power your panels can generate. Thus, we accounted for average insolation, which is a calculation of the number of hours the sun is shining and how powerful its rays are when beaming down on each states’ particular latitude.
  • Is there existing state capacity for solar? We also took into account how many Megawatts of solar energy the states’ electric grids are currently producing to gauge current commitment to transitioning to renewable energy sources.

Their conclusions, then, based upon these criteria, listed California, Hawaii, Arizona, Maryland, and Delaware as the top 5 states based on a ranking system out of 100. Here are their findings for the top 5 states;

1. California

California’s electricity costs are among the most expensive in the country. The state has set the loftiest goal of deriving 33% of electricity from renewable sources by 2020. This high goal encourages generous rebates from utilities to help cover the cost of installation in addition to cash back incentives once the system is in use given support from the California Solar Initiative. After installation, residents also are exempt from paying state property taxes. Cities and municipalities provide even more incentives: in San Francisco cash back incentives range from $2,000 to up to $10,000 depending on household income. As for weather, the state gets great sun which means you’ll be able to rely on your system to generate power all year-round (and get paid for selling surplus energy back to the grid). Californians also pioneered solar leasing.

2. Hawaii

Hawaii almost has it all. As one would expect, the sun shines brightly over the islands given their proximity to the equator. It also has the most expensive electricity costs (36 cents per kilowatt hour). The combination of these factors suggests Hawaiians could save a great deal by switching to solar. Currently, Hawaiians installing PV solar panels can receive a 35% state tax credit (35% of the installation costs or a $5,000 credit) in addition to the national 30% personal tax credit, but no rebates or grants are in place to offset immediate installation costs. Solar leasing is available in Hawaii.

3. Arizona

Right behind Hawaii, Arizona has the second best insolation rating in the country, and combined with relatively high consumption, Arizonians can easily save by switching to solar. The state offers generous rebates based on residents’ local utility, with many providing up to 50% of installation costs.  These rebates are combined with a 25% tax credit (capped at $1,000) that is applied to residents’ income taxes. On top of these incentives are state property and sales tax exemptions. Solar leasing is available in Arizona.

4. Maryland

Maryland aims for 20% of all the energy generated by 2022 to come from renewable sources. Because of this standard, utilities and the state government are offering great incentives. For almost all smaller residential installations, homeowners qualify for a $1,000 grant. Additionally, they receive cash back from the local utility for every kilowatt they produce with their panels on top of state property and sales tax exemptions. Great state regulation means, despite Maryland’s mid-range electricity costs and below-average insolation, homeowners here can typically pay off the cost of installation in 8 years, the same time frame projected for Arizona residents. Solar leasing is available in Maryland.

5. Delaware

Similar to its neighbor, Delaware has the goal of generating 25% of energy using renewable sources by 2025-2026. Also like Maryland, the local utility will pay homeowners for the electricity generated from residential PV panels. The state offers installation rebates that are tiered by the size of your system: for the first 5 kilowatts homeowners can receive $1,250 per kilowatt and $750 for the next 5. On average, the system should pay for itself in 5 years. Solar leasing is also available.

The full list of states can be found over on their website.  

Wondering what to do now that you’ve seen the incentives and found out your state is ranked highly? Check out NerdWallet’s great infographic below.

Solar States

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Joshua S Hill

I'm a Christian, a nerd, a geek, and I believe that we're pretty quickly directing planet-Earth into hell in a handbasket! I also write for Fantasy Book Review (, and can be found writing articles for a variety of other sites. Check me out at for more.

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