What Somerville homeowners can claim
Mass Save funds nearly all residential energy rebates across Massachusetts, including Somerville. All amounts below are in US dollars.
🔥 Heat Pump
$2,650/ton, capped at $8,500 for whole-home systems (partial-home systems can add up to $1,000 in weatherization and sizing bonuses). Income-qualified: up to $16,000 (air-source) or $25,000 (ground-source). Only R-32 or R-454B refrigerant systems qualify — R-410A heat pumps are no longer eligible as of January 1, 2026.
🟫 Insulation & Air Sealing
75% covered for all Somerville homeowners. Income-eligible households (under 60% AMI) pay $0.
💨 HRV & Ventilation
Mass Save may cover ventilation when it's needed as part of a weatherization project. Ask during your home energy assessment; we couldn't confirm a standalone amount.
☀️ Solar (SMART 3.0)
Locked-in production payment for a fixed term once enrolled.
🔌 Battery Storage
No upfront Mass Save rebate. ConnectedSolutions pays you each year for letting the utility use your battery at peak times (MassCEC example: about $1,375/yr for a 5 kW battery), plus the SMART storage adder if paired with solar.
🟩 Windows & Doors
$75 per window when you replace single-pane windows with triple-pane windows. Windows & insulation →
🚘 EV Charger
Eversource and National Grid each run their own home EV charger programs; check your utility for current amounts. EV charger rebates →
📋 Home Energy Assessment
No-cost first step (in person, virtual or online). Needed for insulation discounts and helps you qualify for whole-home heat pump rebates.
🔌 Appliances
$500 for an induction cooktop when switching from gas or propane, $50 for an ENERGY STAR dryer, plus washer and fridge recycling offers.
How to claim it
- Schedule your free Mass Save home energy assessment
- Get quotes from Mass Save-participating contractors in Somerville
- Work is installed
- Contractor or you file the rebate paperwork with Mass Save
- Rebate is paid after Mass Save approves it. Some offers (like heat pump water heaters) are instant; mailed rebates can take months, so keep copies of everything
Other Massachusetts cities
Boston Worcester Springfield Cambridge
Renting or living in a condo in Somerville? Here's what applies to you
Most of the rebate figures above assume you own a single-family home and control the whole building. That's not most of Somerville, one of the densest cities in Massachusetts. Here's what changes if you rent or own a condo unit:
- If you rent: The structural rebates (heat pump, insulation, windows, solar) go to whoever owns the property, not you. A free smart thermostat installed during a home energy assessment is often still available to renters — ask when you book. For the bigger upgrades, point your landlord to this page.
- If you own a condo unit: In-unit upgrades you control yourself, like a heat pump water heater or an in-suite heat pump, may still qualify for the rebates above, usually with your building's approval for anything touching shared systems or exterior walls.
- If it's a whole-building retrofit: Heat pumps, insulation, and solar for an entire condo or multi-family building go through a separate Mass Save multi-unit program rather than the single-family numbers above. Your condo board or property manager applies, not individual owners.
Next steps
View all Massachusetts rebate programs → or read our heat pump buyer's guide →