Residential Solar Investment Program

Harness the Power of the Sun

Generate clean, renewable energy from the sun shining on your home. It’s easier than ever to install a solar photovoltaic (PV) system and reduce electricity costs. This program can help you purchase a solar system or lease one with little to no upfront cost.

Find an Eligible Contractor and get started today!

Make a smart investment in your home, and in a clean energy future

Install a solar photovoltaic (PV) system and reduce your electricity costs with a proven, reliable, pollution-free technology. It’s now an affordable smart energy choice for Connecticut homeowners. The Clean Energy Finance and Investment Authority (CEFIA) provides incentives to offset the cost of your investment.

Buying a solar PV system is an investment in the future.  Although buying a PV system may require an upfront payment, it can deliver significant energy cost savings for years to come. A lease option, which requires little or no money down, can be an attractive alternative that could provide immediate savings on your electric bill.

A number of factors determine what a system will cost and how much you can save over time, including the future price of electricity and how long your system operates. Connecticut residents pay an average of 18 cents per kilowatt hour for electricity from utilities. By combining Connecticut incentives, utility net metering credits for the power you generate, federal tax incentives and low-interest financing, you could realize long-term cost savings over the life of your PV system. The more electricity prices climb, the faster you’ll see savings. Consult a tax advisor regarding potential tax savings.

Steps to Take Smart Energy Action

Step 1 -

Before installing your solar PV system, it's important to make your home as energy efficient as possible. Schedule an energy efficiency assessment for your home through the Home Energy Solutions program. Alternatively, you can work with an independent contractor certified by the Building Performance Institute, Inc., a certified energy manager, a certified energy auditor or a professional engineer. Your assessment will identify cost-effective ways to save energy.

Step 2 -

Find an Eligible Contractor. The contractor will review your project with you, provide information about solar systems and assist you with your incentives application. CEFIA will pay the incentive directly to the Eligible Contractor, who passes the savings on to you by reducing the total system cost. As with any significant purchase, shop around when considering purchasing a solar system. Gather as much information as possible, check contractor references and obtain multiple quotes.

Need financing? Energize CT offers several options. Click here to learn more.

Step 3 -

Install your system! CEFIA will pay the incentive directly to the installer Eligible Contractor, who passes the savings on to you by reducing the total system cost.

Please email us at to learn more.

Residential Solar Incentives

CEFIA offers two incentive models to help you go solar:

1. Purchase a solar system for your home

The Expected Performance-Based Buydown (EPBB) incentive provides you with an upfront cost reduction based on major design characteristics of your system, such as panel type, installation tilt, shading, orientation and solar insolation (a measure of solar radiation energy on a given area). The incentive is paid directly to your Eligible Contractor.

Incentives are tiered, with a higher rate for the first 5 kilowatts (kW) and a lower rate for the second 5 kW. CEFIA does not provide incentives for any portion of a system that exceeds 10 kW.

Your incentive is calculated with the following maximum rates per watt:

Systems with a calculated “design factor” greater than or equal to 87% will receive the full incentive amount. Systems with a calculated “design factor” less than 87% will receive a rebate discounted according to calculated design factor. Please contact an Eligible Contractor for more information regarding design factor calculations.

Qualify for a five percent bonus if your system includes major components principally manufactured in Connecticut, with an additional bonus if they are principally manufactured in a Connecticut distressed municipality.

2. Lease a system with little or no upfront costs

The Performance-Based Incentive (PBI) is designed to allow homeowners to benefit from solar PV systems for little to no upfront cost. Under this model, an Eligible Third-Party PV System Owner owns the system and enters into a contract with the homeowner. The PBI is paid to the System Owner based on actual performance over the course of 6 years, and is used to reduce the homeowner’s monthly cost. The PBI model also provides an additional bonus for projects that use major system components principally manufactured in Connecticut. CEFIA does not provide incentives for any portion of a system that exceeds 10 kW.

Your incentive is calculated with the following maximum rates based on performance:

Incentive calculations in Solarize Connecticut communities will be calculated based on the incentive structure in place at the time of campaign launch. These incentive calculations will be used for systems installed by Eligible Contractor(s) selected for the approved Solarize Connecticut campaign.

For the duration of Solarize Connecticut campaigns in Ashford, Chaplin, Hampton, Pomfret, Cheshire, Columbia, Lebanon, Easton, Redding, Trumbull, Enfield, Glastonbury, Greenwich, Hamden, Manchester, Newtown, Roxbury, Washington, Stafford, Stamford, West Hartford, and West Haven, incentives will be calculated according to the following schedule:

Expected Performance-Based Buydown (EPBB):
•    Up to 5 kW:  $1.75/watt
•    Greater than 5 kW up to 10 kW:  $0.55/watt
•    Incentive is limited to 35% of the total system cost

Performance Based Incentive (PBI):
•    Up to 10 kW: $0.225/kilowatt-hour produced for six years

Your Connecticut Neighbors Are Going Solar

Take a look at an Excel spreadsheet of residential solar installations in Connecticut for information on system costs, sizes, contractors installing systems and other details. (Requires Microsoft Excel to view, sort and print the information. If you do not have Microsoft Excel installed, click here to install the free MS Excel Viewer.)

Read the Residential Solar Investment Program Weekly Market Watch Report - Data updated as of April 11, 2014.


Residential Solar Investment Program Incentive History

Click here for a history of the Program Steps with EPBB and PBI levels for each



Who Is Eligible?

If your home is a 1-4 family owner-occupied residential property in the CL&P or UI service territories, and offers a good location for a solar system, you can qualify for residential solar incentives.

What Makes a Good Location for a Solar System?

  • A roof facing south, southeast or southwest – Although a roof is the best location, a system can also be installed on the ground if a roof cannot be used.
  • A 35 to 50 degree roof tilt –This allows for optimal year-round energy production. A solar system can also be placed on a flat roof using a racking system.
  • Clear access to the sun for most of the day – The location should be unobstructed by trees, roof-gables, chimneys, buildings and other features of your home or surrounding landscape.
  • Adequate space on your roof or property.
  • A roof in good condition –If your roof needs to be replaced in the very near future, you may want to replace it before the solar system is installed to avoid the cost of removing and reinstalling your system.



If you are a Connecticut resident and a customer of Connecticut Light and Power or The United Illuminating Company, you may qualify for affordable financing to purchase or lease your solar PV system.

For details on leasing your residential solar PV system using the CT Solar Lease, please visit

For details on the CT Solar Loan residential financing program, please visit

The Smart-E Loan program offers long-term, affordable options for improving your home’s energy performance. You can finance almost any measure that reduces your home’s fuel or electricity use or increases on-site energy production from clean energy sources, such as Solar PV. Visit for more information.

The CT Solar Lease™ program provides a great opportunity to add a solar system to your home without the up-front costs of ownership. The CT Solar Lease™ offers a no money down* opportunity to install a solar system. Visit for more information.

Finally, certain installers currently offer independent options to purchase or lease a solar PV system.