Solar Investment Tax Credit (ITC)

Homeowners like this one take advantage of the Federal Solar Investment Tax Credit (ITC) to add to their tax return the following year.

Homeowners like this one take advantage of the Federal Solar Investment Tax Credit (ITC) to add to their tax return the following year.

 The solar Investment Tax Credit (ITC) is one of the most important federal policy mechanisms to support the growth of solar energy in the United States. Since the ITC was enacted in 2006, the U.S. solar industry has grown by more than 10,000% - creating hundreds of thousands of jobs and investing billions of dollars in the U.S. economy in the process. In 2015, SEIA successfully advocated for a multi-year extension of the credit, which has provided critical stability for businesses and investors. Despite the overwhelming success and popularity of the ITC, the value of the credit will unfortunately start decreasing after 2019.

SEIA also supports legislation that would extend benefits of the Investment Tax Credit to energy storage. Click here to learn more.

Quick facts

  • The ITC is a 26 percent tax credit for solar systems on residential (under Section 25D) and commercial (under Section 48) properties. The Section 48 commercial credit can be applied to both customer-sited commercial solar systems and large-scale utility solar farms. 

  • Eligibility for the ITC is based on a “commence construction” standard. The IRS issued guidance in June 2018 that explains the requirements taxpayers must meet to establish that construction of a solar facility has begun for purposes of claiming the ITC. Note that this guidance applies to residential and commercial solar projects differently.

  • The 2015 extension of the ITC has provided market certainty for companies to develop long-term investments that drive competition and technological innovation, which in turn lowers energy costs for consumers.

  • Despite progress, solar energy still only represents 2.5% of energy production in the United States.

  • Moving forward, a tax policy that continues to provide stability and investment opportunity for solar energy should be a part of any national discussions about tax, infrastructure, or decarbonization.

Impact of the ITC

The ITC has proven to be one of the most important federal policy mechanisms to incentivize clean energy in the United States. Solar deployment, at both the distributed and utility-scale levels, has grown rapidly across the country. The long-term stability of this federal policy has allowed businesses to continue driving down costs, and lower the bar for homeowners to invest in sustainable energy. The ITC is a clear policy success story – one that has resulted in a stronger and cleaner economy.

HOW DOES THE SOLAR INVESTMENT TAX CREDIT WORK?

The Investment Tax Credit (ITC) is currently a 26 percent federal tax credit claimed against the tax liability of residential (under Section 25D) and commercial and utility (under Section 48) investors in solar energy property. The Section 25D residential ITC allows the homeowner to apply the credit to his/her personal income taxes. This credit is used when homeowners purchase solar systems and have them installed on their homes. In the case of the Section 48 credit, the business that installs, develops and/or finances the project claims the credit.

A tax credit is a dollar-for-dollar reduction in the income taxes that a person or company would otherwise pay the federal government. The ITC is based on the amount of investment in solar property. Both the residential and commercial ITC are equal to 26 percent of the basis that is invested in eligible solar property which has begun construction through 2019. The policy was set to step-down to 22% in 2021 (and then phase out altogether), however congress has decided to extend the 26% for two more years. This is great news for homeowners that are looking to go solar in the near future.

Commercial and utility-scale projects which have commenced construction before December 31, 2021 may still qualify for the 30, or the 26 percent ITC if they are placed in service before December 31, 2023. The IRS issued guidance (Notice 2018-59) on June 22, 2018 that explains the requirements that a taxpayer must meet to establish that construction of a qualified solar facility has begun for purposes of claiming the ITC.

Solar on new residential homes

If a homeowner buys a newly built home with solar and owns the system outright, the homeowner is eligible for the ITC the year that they move into the house. If the homeowners leases the solar system or purchases electricity from the system through a power purchase agreement (PPA), then the ITC is claimed by the company that leases the system or offers the PPA.