Massachusetts Clean Energy Incentive Programs
Massachusetts has the highest solar incentive density per capita in the United States. The SMART program provides a guaranteed 10-year performance-based incentive for solar projects, while Mass Save delivers some of the most generous heat pump and efficiency rebates in the country. Combined with the federal ITC and the MA state solar tax credit, Massachusetts projects consistently achieve exceptional economics.
Overview
Massachusetts' clean energy programs are led by MassCEC (Massachusetts Clean Energy Center), the Department of Energy Resources (DOER), and the state's three major utilities — Eversource, National Grid, and Unitil. The combination of the SMART solar program, Mass Save efficiency programs, and offshore wind development creates a multi-layered incentive ecosystem for clean energy developers of all sizes.
Highest incentive density: Massachusetts ranks #1 nationally for solar incentives per capita. The combination of SMART (10-year performance payment), Mass Save (deep efficiency rebates), and the federal ITC creates total incentive stacks that can cover 50–60% of total solar + storage project costs.
SMART Program — Solar Massachusetts Renewable Target
The SMART program is Massachusetts' primary solar incentive, providing a fixed per-kWh compensation rate for 10 years to qualifying solar projects. Base rates decline as capacity blocks fill. SMART includes several adder categories that increase the base compensation rate:
| Adder Category | Rate Increase |
|---|---|
| Storage Adder | +$0.04–$0.06/kWh |
| Building-Mounted Adder | +$0.05/kWh |
| Low-Income Housing Adder | +$0.06/kWh |
| Brownfield Adder | +$0.03/kWh |
| Canopy / Carport Adder | +$0.06/kWh |
SMART capacity blocks are allocated by utility territory (Eversource, National Grid, Unitil) and system size category. When a block fills, the next block opens at a lower rate. Current block status and rates are published by the MA DOER and should be verified before project financial modeling.
Mass Save
Mass Save is the statewide energy efficiency program funded through utility customer charges. It delivers some of the most generous efficiency rebates in the US, particularly for heat pumps — making Massachusetts one of the most attractive markets for heat pump and electrification contractors.
Heat Pump Systems
Cold-climate heat pumps for heating and cooling. Includes mini-splits, central ducted systems, and ground-source heat pumps.
Heat Pump Water Heaters
High-efficiency heat pump water heaters replacing electric resistance or gas water heating.
Insulation & Air Sealing
Comprehensive weatherization for residential properties, including 75–100% of insulation costs for income-eligible households.
Commercial HVAC & Lighting
Commercial and industrial equipment rebates for qualifying HVAC, lighting, motors, and building systems upgrades.
0% HEAT Loan
Zero-interest financing for qualifying energy efficiency and heat pump improvements. Administered by Mass Save partners.
EV Charging
Rebates for Level 2 EV charging installation for residential and commercial properties.
Green Communities Program
The Green Communities program provides annual grants to Massachusetts municipalities that achieve Green Community designation by meeting five qualifying criteria. Since 2010, over $240M in grants have been awarded to more than 250 communities for clean energy projects, fleet electrification, municipal building retrofits, and renewable energy installations.
MassCEC Programs
The Massachusetts Clean Energy Center (MassCEC) is the state's clean energy agency, administering programs across offshore wind, clean transportation, energy storage, and workforce development.
Offshore Wind
Vineyard Wind, SouthCoast Wind, and New England Wind development support; supply chain investment programs.
Clean Transportation
Fleet electrification grants, EV adoption programs, and charging infrastructure development.
Energy Storage
Advancing Commonwealth Energy Storage (ACES) program; demonstration grants for novel storage technologies.
Massachusetts State Solar Tax Credit
Massachusetts offers a residential income tax credit equal to 15% of the cost of a qualifying solar energy system, capped at $1,000. The credit is non-refundable but can be carried forward for up to 3 years if it exceeds annual state tax liability.
Utility Programs
Eversource
Eastern + Central MACommercial efficiency rebates, heat pump incentives, EV charging infrastructure programs, and SMART administration for the Eversource territory.
National Grid (MA)
Central + Western MABusiness energy efficiency rebates, industrial process improvement incentives, and SMART administration for the National Grid MA territory.
Unitil
Northern MACommercial and residential efficiency programs in the Unitil service territory, including heat pump and insulation rebates.
Federal + MA Incentive Stack
Example combined incentive stack for a commercial solar + storage project in Massachusetts:
| Incentive Source | Rate / Value |
|---|---|
| Federal ITC (§48/48E) | 30% |
| Federal Low-Income Bonus Adder | +10% to +20% |
| SMART Program Compensation | $0.03–$0.15/kWh |
| Mass Save Rebates | Up to $10,000 residential |
| MA State Solar Tax Credit | 15% (up to $1,000) |
Frequently Asked Questions
What is the Massachusetts SMART program?
The Solar Massachusetts Renewable Target (SMART) program is a performance-based incentive administered by the Massachusetts DOER. SMART provides a fixed per-kWh compensation rate for solar energy produced over 10 years, with rates varying by utility, system size, and capacity block. The program includes adder categories for storage, building-mounted systems, low-income projects, and brownfield sites that increase the base compensation rate.
What rebates does Mass Save offer?
Mass Save is the statewide energy efficiency program administered by Massachusetts electric and gas utilities. Residential customers can receive rebates of up to $10,000 for heat pump installations, $1,000+ for insulation, and significant rebates for heat pump water heaters. Commercial and industrial customers can access rebates for qualifying HVAC, lighting, motors, and building envelope improvements. Mass Save also offers 0% HEAT Loan financing.
What is the Massachusetts 15% solar tax credit?
Massachusetts offers a state income tax credit equal to 15% of the cost of a solar installation, capped at $1,000. While the cap limits the credit for larger systems, it stacks directly with the federal ITC and SMART program incentives. The credit applies to residential solar installations and can be carried forward for up to 3 years if it exceeds annual tax liability.
What is the Green Communities program in Massachusetts?
Green Communities is a Massachusetts DOER grant program that provides funding to municipalities for clean energy projects, energy efficiency improvements, and renewable energy installations. Municipalities must meet five criteria to qualify as a Green Community, then receive annual grant funding. Over $240M has been awarded to more than 250 communities since the program launched.
Can Massachusetts solar projects stack SMART, Mass Save, and federal ITC?
Yes. Massachusetts projects can typically stack the federal ITC (30%), the SMART performance-based incentive, Mass Save rebates for associated efficiency measures, and the MA state 15% tax credit. For larger commercial systems, the SMART compensation plus federal ITC often provides the most significant combined value. IncentEdge models the full stack for your specific project size and location.
Get Your Complete MA + Federal Incentive Stack
IncentEdge models SMART program compensation, Mass Save rebates, federal ITC, and the MA state tax credit together — delivering a full project economics analysis in under 60 seconds.
Get Started Free