Connecticut Solar Incentives: What Homeowners Should Know

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Connecticut has offered several ways to lower the cost of home solar or reduce the tax impact of owning it. This page is a plain-language overview of what homeowners commonly look into. It is not a complete list, and it is not financial or tax advice.

Programs open, close, and change their terms. Before you rely on anything here, confirm current rules directly with the program, your electric utility, or a tax professional. Solar Entry does not install solar; we offer a free satellite roof check and help homeowners choose verified, licensed installers.

Residential Renewable Energy Solutions (RRES) program

RRES is Connecticut's residential solar program. It has been the state's main program for paying homeowners for the solar electricity their system produces, and it has been administered through the state's Green Bank and the electric utilities. Details such as the structure of payments, system-size limits, and which installers can participate have changed over time.

Ask any installer whether your project would be eligible for RRES today and how the program would apply to your system. Then verify the answer with the program itself.

Connecticut property tax exemption for solar

Connecticut has provided a local property tax exemption for the added value of qualifying residential solar systems, so that adding panels does not raise your property tax bill for that value. Eligibility details and how to claim the exemption can depend on your town.

Ask your town assessor's office how the exemption applies to your address and whether any paperwork is required.

Connecticut sales tax exemption

Connecticut has also had a sales and use tax exemption covering certain solar energy systems and related equipment. The specific scope can depend on how the purchase and installation are structured. Ask your installer how the exemption is reflected in your quote, and confirm details with the Connecticut Department of Revenue Services or a tax professional.

CT Green Bank Smart-E loan

The Connecticut Green Bank has supported the Smart-E loan, a financing option for energy-efficiency and clean-energy home improvements, which can include solar. Loans are offered through participating lenders and contractors, and rates, terms, and eligibility are set by the lender.

If you are considering a loan of any kind, compare the interest rate, term, fees, and total amount paid over time against other options, such as paying cash or another financing product.

Net metering and interconnection basics

Net metering is a billing arrangement that gives you credit when your solar system sends extra electricity to the grid. Connecticut's rules and how credit is calculated have changed in recent years and vary by program and utility. Ask your utility how your system would be credited.

Interconnection is the process of getting your utility's approval to connect the system to the grid. Your installer typically handles the application, but you should ask about the expected timeline and confirm that you have permission to operate before turning the system on.

Federal solar tax credit

The federal residential solar tax credit has changed in recent legislation, and its status and timing can affect whether and how much you can claim. Because these rules are changing, confirm the current federal rules with a tax professional before making a decision. Do not assume a credit applies to your project until you have checked.

How to use this guide

• Run the free roof check to see whether your roof looks suitable at all.
• Ask each installer which incentives they believe apply and how each is reflected in the quote.
• Verify every incentive with its administrator, your utility, your town, or a tax professional.
• Compare total cost and terms, including any loan or lease, not only the headline price.