How much you get
75–100% off — Mass Save covers 75% of the cost for all Massachusetts homeowners. If your household is under 60% of area median income, it's covered at 100% — you pay nothing.
Installers
Browse HVAC, solar, and electrical installers near Somerville →
Common questions
How much does insulation cost in Somerville with Mass Save?
75% of the cost is covered for every Massachusetts homeowner, including Somerville. If your household is under 60% of area median income, it's covered at 100% — free.
What does Mass Save insulation cover in Somerville?
Attic, wall, and basement insulation plus air sealing, as part of your home energy assessment's recommendations.
Next steps
View all Somerville rebate programs → or check the official Mass Save site → for the current source of truth.