MassSave has launched a new program temporarily paying 100% of the cost of insulation, air sealing, and weatherization projects in houses of worship (HOW). Worship buildings, social halls, schools, and other faith community-owned buildings are eligible. This has great potential to lower costs and carbon emissions – weatherization often lowers heating/cooling costs 20% or more.

MassSave will pay 100% of the cost of weatherization projects like insulation, air sealing and weatherstripping. Note: program usually pays 70%. The program will run through the end of this year.

Massachusetts Interfaith Power and Light is partnering with  MassSave and one of their lead weatherization contractors, Advanced Green Insulation, to engage as many houses of worship in the state as we can. For each project Ma ssIPL brings them, they will make a donation to support our work.

To participate:

  1. Email Jim Nail at MassIPL ( and provide the house of worship name and address, a contact name, email address, and phone number.
  2. Jim will forward the information to Advanced Green Insulation (AGI).
  3. AGI will reach out to the contact to schedule the assessment.
  4. AGI will send the proposal, including the MassSave incentive amount, likely within 2 – 4 weeks in Eversource territories, 4 – 8 weeks in National Grid territories.
  5. Review, sign and return the proposal to AGI, and they will contact you to schedule the work.