Solar Hot Water Incentive Program - Current Residential Incentives

The Clean Energy Finance and Investment Authority (CEFIA) offers grants, through designated participating contractors, to any customer of Connecticut Light & Power or United Illuminating Company  who wishes to install solar hot water systems. Funds will be restricted to domestic hot water and commercial process water systems only; space heating and pool heating systems will not be eligible.  Grants are intended to support systems that will supply between 50% and 80% of a customer’s annual domestic or process hot water needs.  Developers of new residential or nonresidential facilities in Connecticut may also apply for the incentives.

How Are Incentives Calculated?

Solar Hot Water incentives are in the form of rebates based on collector ratings provided by the Solar Rating and Certification Corporation (SRCC). The maximum rebated size of any installation will be limited by the domestic hot water needs of the building’s occupants. For commercial, industrial or institutional projects, the rebate limit will also incorporate the process hot water requirements of the facility. 

Current Residential Installation Incentive

Rebate = $70 × [SRCC Category "C" Mildly Cloudy rating] × [# of collectors] × [shading factor]


This will represent about 30% of the average system’s cost, with a range from 25% to 45%.

Special Note

Funding for this program is being provided  as a transition from the Solar Thermal Rebate Program funded by the American Recovery & Reinvestment Act of 2009 to a long-term CEFIA-funded program which will rely primarily on attractive financing options.  The long-term program will be launched in Summer 2012.