Commonwealth Solar II

Commonwealth Solar II provides rebates for homeowners and businesses in Massachusetts who install solar photovoltaics (PV). Rebates are granted through a non-competitive application process for the installation of photovoltaic (PV) projects by professional, licensed contractors at residential, commercial, industrial, institutional and public facilities.  In addition to the base incentive, further incentives (“adders”) are available for installations using components manufactured in Massachusetts, for individuals with moderate income or home values, and for those who are rebuilding in the wake of a natural disaster.  

For all systems, rebates are calculated by multiplying the per watt incentive (base incentive plus adders) times the nameplate capacity of the system, up to 5 kilowatts (kW); projects are eligible for rebates only if their total capacity is under 15kW.  Further eligibility requirements apply, and potential rebate recipients should read the full program documentation

Block 20-A of the Commonwealth Solar II Rebate program is now open. This will be the final funding block of the Commonwealth Solar II rebate program. Once the funds for Block 20-A are expended, the Commonwealth Solar II rebate program will close to new project applications moving forward. Please note that solar installation companies may submit up to 100 rebate applications under Block 20-A. Once a company submits 100 applications, no additional applications will be accepted. 

Commonwealth Solar II Program Offerings

Commonwealth Solar II Funding Availability

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