State solar incentives

Solar incentives in Washington: Overview

Edited by: Andrei Gorichenskii

Solar panels tend to pay for themselves in 7-8 years across the US. Even in cloudy Washington, they are a profitable investment. Especially when you make use of solar incentives in Washington.

Key takeaways

  • Solar panels are a profitable investment in Washington, despite the state's cloud cover, with payback periods estimated at 7-8 years.
  • Homeowners can claim a 30% Federal Tax Credit on the total cost of their solar system installation.
  • Washington State offers sales tax exemptions for solar energy systems up to 10kW. The exemption can range from 50% to 100% of state and local taxes paid, and is available until January 1, 2030.
  • Washington utilities offer net metering, allowing homeowners to sell excess solar energy back to the grid for credits, saving energy budgets every month. Most utilities credit excess generation at the retail rate, with Grays Harbor PUD being an exception with 50% of retail.
  • Solar easements can be established to protect access to sunlight, and homeowners associations cannot prohibit solar panel installations.

Save 30% of your PV system cost with Federal Solar Tax Credit

The US government wants more people to go solar: it’s a modern and green way of getting energy. This is why the Solar Investment Tax Credit (ITC) program was developed. It allows American citizens to claim 30% of the cost of their installation as an income tax deduction. The cost here is not only solar panels, but also shipping, installation expenses and more. For example, if your system overall made you spend $10,000, the government returns you $3,000. To claim the ITC, complete all the necessary forms and submit them when filing your taxes.

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Benefit from buying without paying taxes

Washington State has sales tax exemptions for the sale of energy-generating equipment, including solar panel systems. Eligible renewable energy systems include systems of 10 kilowatts and lower. Buyers of these systems may claim an exemption in the form of a remittance. The exemption was originally scheduled to expire in 2013, but was extended until January 1, 2030. Beginning January 1, 2020 through December 31, 2029, buyers may qualify for a remittance of 50% to 100% of the state and local tax paid.

Join net metering program to cover your electric bills

Net metering is the main way in which a solar system pays for itself in the US. The idea is always the same: you sell your excess solar energy into the commercial grid, gain credits and use them to cover your next electric bill.

All municipal utilities and electric cooperatives in Washington have to offer net metering to customers with solar systems that are up to 100kW in size. Net excess generation (NEG) is credited to your electric bills at the utility retail rate. Any unused NEG is surrendered to the utility every April 30 with no compensation. The only exception is Grays Harbor PUD which reimburses NEG of its customers at 50% of the utility's retail rate by the end of the year. Renewable energy credits that you get remain yours. Consult with your utility company about the rates and conditions of net metering.

Save up to $2,000 a year trading SRECs - Discontinued

For generating clean electricity, any person can get Solar Renewable Energy Certificates (SRECs). Unlike with net metering, you don’t need to sell any electricity to get credits – the certificates are simply given to you. One SREC is granted for 1 Megawatt-hour of generated power. A 5kW system can generate over 7 Megawatt-hours over the year, so in theory it’s possible to get 5-7 SRECs in 12 months if you send all your energy into the grid.

You can choose to store or sell these certificates using the WREGIS platform. In Washington, Renewable Energy Certificates are bankable for 12 months and can be used by utilities for the prior year's compliance. The value of SRECs is always changing, which makes them similar to stock market assets. In Washington the cost of a SREC can be quite high: around $350. Overall, selling SRECs could bring you from $350 to $2,000 annually for a 5kW system. To participate, register your system at the WREGIS website.

Update 2025: Unfortuntely, the SREC program seem to be discontinued in Washington.

Solar easements help settle the debates with neighbors

To make sure that your panels get enough sunlight and won't be overshadowed by, say, trees on your neighbors’ land, you can create a solar easement. All the conditions of an easement you have to negotiate with your neighbors yourself. The easement should be written down and recorded in the county’s register of deeds. In Washington, solar law also restricts homeowners associations from prohibiting the installation of panels. They can, however, release guidelines related to the aesthetic appearance and visibility of panels.

Incentive/
Program
DescriptionBenefitsEligibility/
Requirements
Notes
Federal ITC (30%)
30% tax credit on the total cost of solar system installation.
Reduces overall system cost, accelerates payback period.
Must own the system, meet IRS guidelines.
Applies to installation, equipment, and other associated costs.
WA Sales Tax Exemption
Exemption from state and local sales tax on solar energy systems.
Reduces upfront costs.
Systems 10kW or smaller. 50-100% tax remittance.
Exemption available until January 1, 2030.
Net Metering
Allows homeowners to sell excess solar energy back to the grid for credits.
Reduces or eliminates electricity bills.
Systems up to 100kW. Must be a customer of a participating utility.
Excess credits are typically surrendered annually (April 30th), except Grays Harbor PUD which pays 50% of retail at years end. Check with your local utility for specific information.
Solar Easements
Legal agreements to protect access to sunlight.
Ensures optimal solar panel performance.
Negotiated between property owners. Recorded with the county.
Homeowners associations cannot prohibit solar panel installations but can regulate aesthetic guidelines.


What are solar incentives, and why do they exist?
The push for solar energy isn't just a trend – it's a strategic move supported by various incentives designed to make the switch from traditional power sources more attractive. These incentives, ranging from tax breaks to direct cash rebates, are more than just financial perks. They represent a concerted effort to reshape our energy landscape, addressing pressing global challenges.

The core motivation behind these programs is the urgent need to combat climate change. By encouraging the widespread adoption of solar power, governments aim to drastically reduce greenhouse gas emissions and mitigate the harmful effects of fossil fuel reliance. This shift isn't only about environmental preservation; it's about building a more sustainable and resilient future for generations to come.

Solar incentives also contribute to economic vitality. The burgeoning solar industry creates a wealth of jobs, from manufacturing and installation to research and development, fostering local economies and driving technological innovation. By diversifying our energy portfolio, we also enhance national energy security, reducing vulnerability to volatile global energy markets.

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Years of experience in translation and a love of nature help Julia find the right words to encourage going solar. She joined the team in 2023 and is happy to make her contribution to a greener future.

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