Building Insulation & Weatherization

The below incentives are for buildings less than 8,000 square feet only.

1. Participate in a No-Cost Energy Assessment
   Contact your Mass Save Sponsor to schedule a no-cost energy assessment before installation. A qualified vendor will contact you to determine existing conditions at your facility and identify potential energy-saving measures during a site visit or virtual assessment. Recommended improvements will be installed by your qualified vendor.
   
2. Apply for Weatherization Rebates
   

   Work with a licensed weatherization contractor to discuss your weatherization project and determine rebate eligibility. Upon completion of installation, apply for a rebate by submitting all required documentation by email to your Mass Save Sponsor.

   For customers of Berkshire Gas, Cape Light Compact, Liberty Utilities, or Unitil, notification and approval of the project is required prior to installation.

   Download & Email Rebate Form

Can’t find what you’re looking for? The Sponsors of Mass Save offer customized project support to help your business save energy and money and reduce greenhouse gas emissions.

For a full list of eligibility requirements, please reference the rebate form.

• Facilities undertaking weatherization improvements must be 8,000 square feet or less.
• Weatherization measures must be installed between July 1, 2022 and December 31, 2022. Completed application and required documentation must be submitted no later than February 28, 2023.
• Offers valid only for commercial & industrial customers in Massachusetts where Berkshire Gas, Cape Light Compact, Eversource, Liberty Utilities, National Grid, or Unitil are the electric or gas Program Administrator.
  • For customers of Berkshire Gas, Cape Light Compact, Liberty Utilities, or Unitil territories, notification of project prior to installation is required. Please use the Find Your Sponsor tool for contact information.
• Weatherization measures that have already received a rebate or incentive from a Mass Save Sponsor are not eligible.
• Weatherization measures are limited to attic air sealing, attic insulation (including attic kneewall insulation), and exterior wall insulation. Basement insulation and air sealing are not eligible for rebates.
• Mass Save Sponsors, at its discretion, may exclude projects in facilities with heating and cooling loads that are highly driven by ventilation requirements such as those incurred by food service or laboratory settings.
• New construction projects are not eligible for this weatherization rebate.

Project installation may be subject to an onsite verification. See Terms & Conditions for full requirements. 

If your building is over 8,000 square feet, we offer incentives for custom weatherization projects.