The 30% solar tax credit expires after Dec. 31, 2025. Go solar now to lock in $9,000 in savings. Get quotes

Connecticut solar panels: The complete guide in 2025

Data updated Jul 15, 2025

Written by: Emily Walker

Thinking about going solar? In Connecticut, you’ll need a 11.22 kW system to match the average electric bill. It’ll cost you around $21,889 after the federal tax credit.

Cost for an average system in Connecticut


Out of pocket cost, cash$31,270
Federal tax credit (30%)- $9,381
Price post tax credit$21,889

25-year savingsPayback periodElectricity offset
$129,1526 Years94%
Live data powered by

As long as your federal tax bill is high enough, you can take advantage of the federal investment tax credit (ITC).

See your solar savings

Compare multiple offers and save up to 20%

Going solar in Connecticut

Connecticut is better known for its historic homes and white sandy beaches than for its ample sunshine. But with affordable state financing options and some of the highest electricity rates, it's still a great place to install solar panels. 

In fact, as long as you have the right roof, solar makes sense for most Connecticut homeowners. 

Here's what you need to know about going solar in the Constitution State.

Cost

How much do solar panels cost in Connecticut?

Solar panels will save you a lot of money over time, but the upfront costs aren't cheap. The average Connecticut homeowner needs a 11.22 kW solar panel system to cover their electricity needs, which comes out to $31,270 before incentives. Prices range from $26,580 to $35,960, but after the federal tax credit, that drops by 30%. Connecticut even has some local incentives that will help out, too. However, the federal tax credit is now set to expire after 2025, following recent legislative changes. If you're considering solar, starting the process now could save you $9,381.

While this may sound high, it will pay off in Connecticut. That's why over 25,000 Connecticut homeowners have used EnergySage to receive and compare quotes for solar installations. You can expect to earn back your initial solar investment through electricity savings in about 6.2 years, while most systems last at least 25 years. You'll often see this number referenced as your solar payback period.

Solar panel systems are expensive, but there are ways to finance your investment and reduce upfront costs.

  • Cash purchase: You pay for your system outright, which typically provides the best long-term savings.

  • Solar loan: You pay for your system in monthly installments like a lease but maintain ownership like a cash purchase. Generally, the best solar loans are subsidized clean energy loans through local incentive programs. If you don’t have access to that, a home equity loan or a personal loan are often your next best options. Private solar loans typically come with higher interest rates or upfront fees.

  • Solar lease or power purchase agreement (PPA): You make monthly payments on your system like a loan, but a third-party company owns your system. You’ll either sign a solar lease or purchase the electricity the panels generate through a PPA. Third-party ownership models typically deliver the lowest savings, but can make sense in some situations. If you choose this financing option, read the fine print: You can get trapped in them for longer than you'd like.

Solar panels on a house

Incentives

What are the best solar rebates and incentives in Connecticut?

Incentives help bring solar's price tag down considerably in Connecticut. Here are the major ones to know about:

IncentiveAverage savings in ConnecticutDescription

Residential Clean Energy Tax Credit, formerly the federal investment tax credit (ITC)

$9,381

Lowers your solar panel system's cost by 30%, but expires on January 1, 2026.

Smart-E Loans

Varies depending on how you finance your system

Connecticut Green Bank provides long-term, low-interest financing for home energy upgrades, including solar panels

Connecticut solar sales tax exemption

6.35% of your system costs

You don't need to pay any sales tax on new solar panel systems in Connecticut, saving at least 6.35% of your system costs

Connecticut solar property tax exemption

1.63% of your system's value annually on average

If you use solar energy as a source of power, you won't need to pay a tax on the value your solar panels add to your property

Is net metering available in Connecticut?

If you live in a state with a net metering program, you can earn credits for the excess generation your solar panel system produces and delivers back to the grid. It’s essentially a solar buyback program that makes it so you owe little to nothing on your electric bills.

Connecticut no longer offers net metering, but if your solar panel system is less than or equal to 25 kW and connected to the grid, you can benefit from its Residential Renewable Energy Solutions (RRES) program. You can sign up for two different tariffs in the RRES program: the Netting Tariff and the Buy-All Tariff

We get into all the details about the different tariffs here, but the biggest thing to know is that the Netting Tariff is actually better than Connecticut's former net metering program.

A house with rooftop solar panels connected to the grid

Equipment

Equipment quality

The more efficient a solar panel is, the more power per square foot. As of 2025, the most popular solar panels have a rated output of 450 watts. To get the most out of your solar energy system, choose panels with at least that much power output. 

Your solar inverter setup is also important consideration—make sure it suits your roof’s layout. 

And if you’re interested in a solar battery, it’s best to choose one that integrates with that inverter. 

The best equipment tends to be more expensive, but it will often save you more money in the end. Premium equipment often has the best warranty terms, guaranteeing 25-40 years of coverage for repairs, replacements, and the lowest degradation rates (meaning they’ll maintain more of their power output for longer).

See our list of the best solar panels

Companies

Who are the best solar installers in Connecticut?

We pre-screen all of the solar companies on EnergySage to ensure they'll provide you with a high-quality installation. We then rate them based on their results, reputation, and responsiveness. Here are the highest-rated EnergySage installers in Connecticut:

resources

Top solar resources for Connecticut

Real homes. Real savings.

Helping customers make informed decisions since 2009.

Learn more about solar

Discover whole-home electrification
Home solar
rooftop solar icon

Create your own clean energy with solar panels.

Community solar
community solar icon

Enjoy the benefits of solar without rooftop panels.

Heating & cooling
Heat pump icon

Explore heat pumps, the latest in clean heating & cooling technology.