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Guides/Solar regulations/Massachusetts

MA · PLAN BEFORE YOU BUY

Massachusetts solar regulations.

Check both net-metering eligibility and the electric company’s interconnection process; municipal electric customers must check their own municipal program.

Marconi Beach, Cape Cod National Seashore, Massachusetts
Marconi Beach, Cape Cod National Seashore, MassachusettsPhoto details & credits

Sources reviewed · 3 regulation sources

What to know in Massachusetts.

  • DPU says an eligible net-metering facility must be interconnected by the electric company and meet that company’s requirements before connection.

    Massachusetts DPU — Net metering eligibility

  • DPU’s net-metering eligibility guidance applies to customers of regulated electric companies; customers of municipal electric companies should ask their municipality what it offers. SMART and net metering are separate programs.

    Massachusetts DPU — Net metering guide

  • The Department of Fire Services publishes the Massachusetts Electrical Code and Massachusetts amendments to NFPA 70. Use the current adopted requirements and obtain local permits.

    Massachusetts Electrical Code
Which rules cover your project?

Net-metering cap allocation or an exemption may also matter; confirm the specific facility class with the utility and DPU resources.

Who provides electricity here?

Narrow possible delivery utilities by ZIP or confirm yours

Find the delivery utility on your electric bill first. A retail supplier or on-site solar seller may be a different company; your delivery utility handles the local grid connection.

Check your actual service address.

Municipal light plants can have programs separate from the Mass Save sponsors.

DPU: Find my electric, gas and water company
Browse 91 reported provider records in Massachusetts

91 records

Electric delivery utilities 46

  • Eversource — official logo
    NSTAR Electric CompanyInvestor Owned · EIA 54913
    Reported counties (11)

    Barnstable, Berkshire, Bristol, Dukes, Franklin, Hampden, Hampshire, Middlesex, Norfolk, Plymouth, Suffolk

  • National Grid — official logo
    Massachusetts Electric CoInvestor Owned · EIA 11804
    Reported counties (12)

    Barnstable, Berkshire, Bristol, Essex, Franklin, Hampden, Hampshire, Middlesex, Norfolk, Plymouth, Suffolk, Worcester

  • City of Taunton - (MA)Municipal · EIA 18488
    Reported counties (1)

    Bristol

  • Town of Reading - (MA)Municipal · EIA 15748
    Reported counties (1)

    Middlesex

  • City of Chicopee - (MA)Municipal · EIA 3477
    Reported counties (1)

    Hampden

  • Fitchburg Gas & Elec Light CoInvestor Owned · EIA 6374
    Reported counties (2)

    Middlesex, Worcester

  • City of Peabody - (MA)Municipal · EIA 14605
    Reported counties (1)

    Essex

  • City of Westfield - (MA)Municipal · EIA 20481
    Reported counties (1)

    Hampden

  • Town of Shrewsbury - (MA)Municipal · EIA 17127
    Reported counties (1)

    Worcester

  • City of Holyoke - (MA)Municipal · EIA 8774
    Reported counties (1)

    Hampden

  • Town of Middleborough - (MA)Municipal · EIA 12473
    Reported counties (1)

    Plymouth

  • Town of Wakefield - (MA)Municipal · EIA 19979Residential service not separately reported
    Reported counties (1)

    Middlesex

  • Town of Braintree - (MA)Municipal · EIA 2144
    Reported counties (1)

    Norfolk

  • City of Norwood - (MA)Municipal · EIA 13839
    Reported counties (1)

    Norfolk

  • Town of North Attleborough - (MA)Municipal · EIA 13679
    Reported counties (1)

    Bristol

  • Town of Belmont - (MA)Municipal · EIA 1523Residential service not separately reported
    Reported counties (1)

    Middlesex

  • Town of DanversMunicipal · EIA 5480
    Reported counties (1)

    Essex

  • Town of Hudson - (MA)Municipal · EIA 8973
    Reported counties (1)

    Middlesex

  • Nantucket Electric CoInvestor Owned · EIA 13206
    Reported counties (1)

    Nantucket

  • Town of Marblehead - (MA)Municipal · EIA 11624Residential service not separately reported
    Reported counties (1)

    Essex

  • City of Hingham - (MA)Municipal · EIA 8796Residential service not separately reported
    Reported counties (1)

    Plymouth

  • Town of Mansfield - (MA)Municipal · EIA 11586
    Reported counties (1)

    Bristol

  • Town of Wellesley - (MA)Municipal · EIA 20310
    Reported counties (1)

    Norfolk

  • Town of Holden - (MA)Municipal · EIA 8715Residential service not separately reported
    Reported counties (1)

    Worcester

  • Town of Concord - (MA)Municipal · EIA 4147Residential service not separately reported
    Reported counties (1)

    Middlesex

  • Town of South Hadley - (MA)Municipal · EIA 17560Residential service not separately reported
    Reported counties (1)

    Hampshire

  • Town of Ipswich - (MA)Municipal · EIA 9442Residential service not separately reported
    Reported counties (1)

    Essex

  • Town of Littleton - (MA)Municipal · EIA 11085
    Reported counties (1)

    Middlesex

  • Hull Municipal Light Plant - (MA)Municipal · EIA 8797Residential service not separately reported
    Reported counties (1)

    Plymouth

  • Town of Groton - (MA)Municipal · EIA 7715Residential service not separately reported
    Reported counties (1)

    Middlesex

  • Town of Sterling - (MA)Municipal · EIA 18087Residential service not separately reported
    Reported counties (1)

    Worcester

  • Town of Middleton - (MA)Municipal · EIA 12477Residential service not separately reported
    Reported counties (1)

    Essex

  • Town of Templeton - (MA)Municipal · EIA 18546Residential service not separately reported
    Reported counties (1)

    Worcester

  • Town of West Boylston - (MA)Municipal · EIA 20326Residential service not separately reported
    Reported counties (1)

    Worcester

  • Town of Georgetown - (MA)Municipal · EIA 7130Residential service not separately reported
    Reported counties (1)

    Essex

  • Town of Ashburnham - (MA)Municipal · EIA 902Residential service not separately reported
    Reported counties (1)

    Worcester

  • Town of Rowley - (MA)Municipal · EIA 16377Residential service not separately reported
    Reported counties (1)

    Essex

  • Town of Merrimac - (MA)Municipal · EIA 12296Residential service not separately reported
    Reported counties (1)

    Essex

  • Town of Groveland - (MA)Municipal · EIA 7723Residential service not separately reported
    Reported counties (1)

    Essex

  • Town of Boylston - (MA)Municipal · EIA 2086Residential service not separately reported
    Reported counties (1)

    Worcester

  • Town of Paxton - (MA)Municipal · EIA 14585Residential service not separately reported
    Reported counties (1)

    Worcester

  • Town of Princeton - (MA)Municipal · EIA 15371Residential service not separately reported
    Reported counties (1)

    Worcester

  • Town of ChesterMunicipal · EIA 3447Residential service not separately reported
    Reported counties (2)

    Berkshire, Hampden

  • City of Russell - (MA)Municipal · EIA 16438Residential service not separately reported
    Reported counties (1)

    Hampden

  • Massachusetts Bay Trans AuthorityPolitical Subdivision · EIA 49848Residential service not separately reported
    Reported counties (3)

    Middlesex, Norfolk, Suffolk

  • University of Massachusetts AmherstState · EIA 66866Residential service not separately reported
    Reported counties (1)

    Hampshire

Electricity suppliers / retail marketers 39

  • Direct Energy ServicesRetail Power Marketer · EIA 54820
    Reported counties (0)

    County coverage not reported in this source

  • First Point Power, LLCRetail Power Marketer · EIA 59793
    Reported counties (0)

    County coverage not reported in this source

  • Constellation NewEnergy, IncRetail Power Marketer · EIA 13374
    Reported counties (0)

    County coverage not reported in this source

  • Dynegy Energy Services, LLCRetail Power Marketer · EIA 59385
    Reported counties (0)

    County coverage not reported in this source

  • NextEra Energy Services, LLCRetail Power Marketer · EIA 7279
    Reported counties (0)

    County coverage not reported in this source

  • Reliant Energy Northeast LLCRetail Power Marketer · EIA 57037
    Reported counties (0)

    County coverage not reported in this source

  • Inspire Energy Holdings, LLCRetail Power Marketer · EIA 59310
    Reported counties (0)

    County coverage not reported in this source

  • CleanChoice Energy, Inc.Retail Power Marketer · EIA 58951
    Reported counties (0)

    County coverage not reported in this source

  • Clearview Electric Inc.Retail Power Marketer · EIA 58974
    Reported counties (0)

    County coverage not reported in this source

  • Town Square EnergyRetail Power Marketer · EIA 59059
    Reported counties (0)

    County coverage not reported in this source

  • Residents Energy, LLCRetail Power Marketer · EIA 59809
    Reported counties (0)

    County coverage not reported in this source

  • SmartEnergy Holdings, LLCRetail Power Marketer · EIA 58956
    Reported counties (0)

    County coverage not reported in this source

  • Nordic Energy Services, LLCRetail Power Marketer · EIA 59088
    Reported counties (0)

    County coverage not reported in this source

  • Titan Gas LLCRetail Power Marketer · EIA 59065
    Reported counties (0)

    County coverage not reported in this source

  • National Gas & Electric, LLCRetail Power Marketer · EIA 63232
    Reported counties (0)

    County coverage not reported in this source

  • Think Energy, LLCRetail Power Marketer · EIA 65310
    Reported counties (0)

    County coverage not reported in this source

  • Palmco Power MA, LLCRetail Power Marketer · EIA 59313
    Reported counties (0)

    County coverage not reported in this source

  • Viridian Energy LLCRetail Power Marketer · EIA 58161
    Reported counties (0)

    County coverage not reported in this source

  • Hampshire Power CorporationRetail Power Marketer · EIA 67240
    Reported counties (0)

    County coverage not reported in this source

  • Provider Power MASS, LLCRetail Power Marketer · EIA 58747
    Reported counties (0)

    County coverage not reported in this source

  • Major Energy Electric ServicesRetail Power Marketer · EIA 56504
    Reported counties (0)

    County coverage not reported in this source

  • Ambit Energy Holdings, LLCRetail Power Marketer · EIA 56212
    Reported counties (0)

    County coverage not reported in this source

  • SFE Energy Massachusetts, Inc.Retail Power Marketer · EIA 59734
    Reported counties (0)

    County coverage not reported in this source

  • Discount Power Inc - (CT)Retail Power Marketer · EIA 59993
    Reported counties (0)

    County coverage not reported in this source

  • XOOM Energy Massachusetts, LLCRetail Power Marketer · EIA 57489
    Reported counties (0)

    County coverage not reported in this source

  • Energy Services Providers, IncRetail Power Marketer · EIA 55874
    Reported counties (0)

    County coverage not reported in this source

  • Verde Energy USARetail Power Marketer · EIA 59620
    Reported counties (0)

    County coverage not reported in this source

  • Renaissance Power & Gas, Inc.Retail Power Marketer · EIA 61059
    Reported counties (0)

    County coverage not reported in this source

  • Atlantic Energy LLCRetail Power Marketer · EIA 60583
    Reported counties (0)

    County coverage not reported in this source

  • Public Power LLC (CT)Retail Power Marketer · EIA 58119
    Reported counties (0)

    County coverage not reported in this source

  • Alpha Gas and Electric, LLCRetail Power Marketer · EIA 58964
    Reported counties (0)

    County coverage not reported in this source

  • Green Mountain Energy CompanyRetail Power Marketer · EIA 7554
    Reported counties (0)

    County coverage not reported in this source

  • Energy Plus Holdings LLCRetail Power Marketer · EIA 56265
    Reported counties (0)

    County coverage not reported in this source

  • Summer Energy Northeast, LLCRetail Power Marketer · EIA 61200
    Reported counties (0)

    County coverage not reported in this source

  • Great American Gas & Electric, LLCRetail Power Marketer · EIA 67589
    Reported counties (0)

    County coverage not reported in this source

  • Eligo Energy, LLCRetail Power Marketer · EIA 59054
    Reported counties (0)

    County coverage not reported in this source

  • Maven Energy, LLCRetail Power Marketer · EIA 67751
    Reported counties (0)

    County coverage not reported in this source

  • Just EnergyRetail Power Marketer · EIA 9949
    Reported counties (0)

    County coverage not reported in this source

  • MidAmerican Energy Services, LLCRetail Power Marketer · EIA 59931
    Reported counties (0)

    County coverage not reported in this source

On-site energy sellers 6

  • Sunrun Inc.Behind the Meter · EIA 59647
    Reported counties (0)

    County coverage not reported in this source

  • Tesla Inc.Behind the Meter · EIA 57313
    Reported counties (0)

    County coverage not reported in this source

  • Spruce FinanceBehind the Meter · EIA 59943
    Reported counties (0)

    County coverage not reported in this source

  • EverBright, LLCBehind the Meter · EIA 66036
    Reported counties (0)

    County coverage not reported in this source

  • SunPower Capital, LLCBehind the Meter · EIA 59580
    Reported counties (0)

    County coverage not reported in this source

  • Palmetto Solar, LLCBehind the Meter · EIA 66026
    Reported counties (0)

    County coverage not reported in this source

Official logo sources · Initials indicate a logo not yet verified. Municipal-owner emblems identify the owning city or village.

Source: EIA-861 final 2025 detailed data · Reporting year 2025. Names and reported counties are historical survey data, not a live address lookup. A county can have several providers, and a listing does not mean every resident can choose it. Small/territory-only reports may not identify residential service separately.

Credits, rebates, and other opportunities.

Check the program’s scope before comparing savings: a tax exemption, equipment rebate, loan and electricity-export payment provide different benefits. Funding, utility territory, income, equipment and installation dates can limit eligibility. Amounts below are not added together or deducted from product prices.

Build a project incentive checklist for Massachusetts

1 state & utility record

Mass Save — official logo
Utility · rebateEligibility / funding conditions

2026 air-source heat-pump rebates

Sponsors of Mass Save · Heat pumps

Whole-home, partial-home and basic heat-pump rebate paths have different eligibility and equipment rules.

Benefit
2026 rebates depend on tonnage, project type and income; use the current schedule.
Who may qualify
Participating sponsor accounts, qualified equipment and a Heat Pump Installer Network contractor; whole-home projects have weatherization requirements.
Before applying or buying
Verify eligibility before work. 2026 equipment must be installed by December 31, with supporting documents due February 28, 2027.
Mass Save: Air Source Heat Pumps Reviewed 2026-11-06

Mass Save is service- and equipment-specific; a municipal account may have different incentives. Solar and storage programs need their own eligibility review. This is a curated starting list, not every local incentive or a guarantee of available funding.

Federal programs in every state

The federal rules below apply nationally. State-administered federal rebates still require the local program to be operating and your project to meet its conditions.

  • Residential Clean Energy Credit (25D)

    Closed / ended

    Not available for new property placed in service after December 31, 2025. Do not assume a federal 30% credit for a new 2026 solar, wind, geothermal or battery installation.

    IRS: Residential Clean Energy Credit

  • Energy Efficient Home Improvement Credit (25C)

    Closed / ended

    The federal home-efficiency credit, including qualifying heat-pump improvements, ended for property placed in service after December 31, 2025.

    IRS: Energy Efficient Home Improvement Credit

  • HOMES / High-Efficiency Electric Home Rebates

    Eligibility / funding conditions

    Federally funded home-energy rebates operate through participating local administrators. Check the state program’s launch, current funding, eligible measures and application requirements. This is not a blanket rooftop-solar rebate.

    DOE: Home Energy Rebates Program

  • Weatherization Assistance Program

    Eligibility / funding conditions

    Income-eligible households may receive approved home-weatherization services through local agencies. This is assistance delivered through a program, rather than an automatic reimbursement for equipment you buy.

    DOE: How to Apply for Weatherization Assistance
Federal program details & filing sources

Permits and electrical codes.

The Department of Fire Services publishes the Massachusetts Electrical Code and Massachusetts amendments to NFPA 70. Use the current adopted requirements and obtain local permits.

Use the adoption authority linked below to check the effective date and amendments. The newest published NEC edition is not automatically the edition adopted for your project.

Before ordering equipment.

Two conversations. Keep their answers separate.

Your proposed system and location inform separate local-authority and serving-utility questions, which become dated project records.
A question map, not an approval sequence. Local permit/code questions and utility interconnection/export questions have different scopes; processes and reviewers vary by address and serving utility. Keep permit and interconnection records

Track permits and interconnection in a project

  1. Confirm the permit authority

    Ask the city, county, or state electrical office which building, electrical and fire-code editions and amendments apply to this address. Request the solar/ESS permit checklist and inspection sequence.

  2. Confirm the utility process

    Give the serving utility your proposed capacity, inverter model and operating mode. Ask which interconnection application, tariff, export limits, meter changes and written operating authorization apply.

  3. Document the exact equipment

    Collect model-specific certificates, installation manuals, a one-line diagram, site/roof plans, and the battery/inverter pairing if storage is proposed. Check them with the permit authority and utility before ordering.

For the general permitting and inspection process: DOE: Permitting and Inspection for Rooftop Solar .

UL, NEMA, and system acceptance.

Different evidence, different scope.

UL 1973 concerns battery scope, UL 9540 concerns an exact energy storage system, and UL 9540A is a test method; one does not automatically replace another.
Conceptual scope labels, not certification marks or product approvals. A battery listing or fire-test report alone does not establish acceptance of a complete installed system. Read the exact model/configuration records. Check exact certification and test scope

Check the exact model and approved system configuration. A UL 1973 battery listing or UL 9540A fire-test report does not, by itself, establish UL 9540 certification of a complete storage system.

Open the UL & NEMA reference

Scope and system-level certification: UL Solutions: Energy Storage System Testing and Certification .

Official sources.

Open the source for current forms, eligibility, tariffs, and adopted rules. Utility-specific examples apply to that provider.

KEEP EXPLORING

More state guides.

CT

Connecticut

West Branch Reservoir and Colebrook Dam, Connecticut

For new residential projects, start with Residential Renewable Energy Solutions rather than assuming the legacy net-metering program.

11 delivery providers · 1 program record3 regulation sources · View guide
DE

Delaware

Cape Henlopen State Park, Delaware

Identify your utility before applying the state’s net-metering provisions or estimating annual credits.

11 delivery providers · 2 program records3 regulation sources · View guide
DC

District of Columbia

Washington Monument at dusk, Washington, DC

Treat utility interconnection and DOB construction permitting as separate approvals.

1 delivery providers · 1 program record3 regulation sources · View guide

Photography & map credits