Solarize Massachusetts (Solarize Mass) seeks to increase the adoption of small-scale solar electricity in participating communities through a competitive solicitation process that aggregates homeowner buying power to lower installation prices for participants.

Solarize Massachusetts Plus (Solarize Mass Plus) seeks to increase adoption of small-scale solar electricity and additional complementary technologies.

The deadline for cities and towns to apply to the 2019 Solarize Mass Program closed on April 30, 2019.  The next round of Solarize Mass is anticipated to be accepting applications later this year. Check back for information!


2019 Solarize Mass Program

The following communities are currently participating in the 2019 round:


Solarize Mass Belchertown:

Solarize Mass Plus Needham:

Solarize Mass Plus Salem-Swampscott-Nahant:

Solarize Mass Plus Williamstown-North Adams:


If you live in one of these communities, you can contact the respective community volunteer team via the contact information listed under their campaign information.


2018 Solarize Mass Completed Programs & Earlier Rounds

Several communities who participated in the 2018 Solarize Mass Program have now completed their campaigns.

For final results for all communities: See Solarize Mass Program Results page for final information on all campaigns.

For contact information:

For individual community contact information, email


Communities interested in participating in Solarize Mass must be serviced by a utility that pays into the Massachusetts Renewable Energy Trust. 

Individuals interested in participating in the program must reside or own property located in a community that is running an active Solarize Mass campaign.

2019 Solarize Mass and Solarize Mass Plus

Please note that the deadline for application closed on April 30, 2019 and applications are no longer being accepted.


Interested communities should review the following resources to learn more and prepare to apply and participate in a Solarize Mass Program in the future:


2019 Round Informational Webinar:

MassCEC hosted a webinar on Tuesday November 13, 2018 to provide an overview of Solarize Mass and Solarize Mass Plus programs and answer questions. Click here to view the recording of the webinar. Click here to access a PDF of the webinar slides.


Installers interested in applying to participate in the Solarize Mass program should review the Installer Resources page.

Now in its ninth year, Solarize Mass is a partnership between MassCEC and the Green Communities Division of the Massachusetts Department of Energy Resources (DOER).  Click here to see a map of all Solarize Communities and results to date.


How it works

The Solarize Mass program looks to increase the adoption of small-scale solar electricity systems through a grassroots educational campaign, driven mainly by local volunteers and reduced pricing that increases the savings for participants. Each participating community competitively selects a designated solar installation company. Homeowners and business owners who want to participate can either purchase the solar electricity systems directly or enter into a lease or power purchase agreement (PPA) with the installer if offered. Under a lease or PPA, the installer will own, operate and maintain the system, while the home or business owner agrees to purchase the power generated by the system as a specific rate. 

The Solarize Mass Plus program pairs the Solarize Mass model with an additional technology offering. This program was piloted in 2017 and participating communities opted for solar PV plus solar hot water and solar PV plus air source heat pumps. Eligible technologies range from various Clean Heating and Cooling technologies, to Energy Efficiency or Electric Vehicles.In addition to competitively selecting a solar installation company, MassCEC will assist the community to competitively selecting a vendor for the Plus technology or technologies.

Since Solarize Mass launched in 2011, the program has resulted in more than 19,000 individuals expressing interest in pursuing solar electricity and other clean energy technology systems. To date, over 3,500 residents and business owners in 69 communities signed contracts resulting in over 23.55 megawatts of contracted capacity. The Solarize Mass Plus program has resulted in the contracting of an additional 43 clean energy technologies. In addition, the number of small-scale solar electricity projects in almost every community doubled as a result of the program. See Solarize Mass Results for information and up-to-date results. Starting in 2016 the Solarize Mass program began accepting community applications on a rolling basis; this method continues with the 2019 Solarize Mass Program. To learn more about the current Solarize Mass program, go to the Solarize Mass main page. 


Solarize Mass Results


Solarize Mass Resources Toolkit

The below resources provide more information about developing and implementing a Solarize Mass, Solarize Mass Plus, or similar program such as solarize-like or HeatSmart campaign.


Solarize Mass Community Marketing Proposals

Solarize Mass community marketing proposals from 2012 through 2019 are provided below to assist communities and other interested parties in considering different strategies for implementing a Solarize or similar solar adoption campaign. Developing a marketing proposal prior to the launch of a solar adoption campaign can provide a useful roadmap for communities, and may benefit program results.  

Solarize Mass Community Marketing Proposals (2012 - 2019)
2019 Belchertown Needham Salem-Swampscott-Nahant Williamstown-North Adams  
2018 Wellfleet-Eastham-Truro-Provincetown Lowell Springfield-Longmeadow    
2017 Lincoln-Sudbury-Wayland Newburyport Winthrop    
2016 Bolton Medfield Natick Shelburne-Colrain-Conway


Upton Windsor-Cummington-Goshen-Worthington      
2015 Plainfield-Ashfield-Buckland Provincetown Quincy    
2013 Round 2 Adams Amherst Andover Great Barrington-Egremont Lexington-Bedford
Needham Salem-Swampscott Watertown Wellfleet Williamsburg-Whately-Chesterfield
2013 Round 1 Bourne Brookline Chelmsford-Carlisle Lee Medford
Medway Newton Northampton Williamstown


2012 Acton Arlington Boston Hopkinton


Mendon Montague Newburyport Palmer


Pittsfield-Lenox Millbury-Sutton Wayland-Lincoln-Sudbury