Plugin Solar Central logoPlugin Solar Central

Sources last reviewed 2026-11-01

Content updated

Massachusetts plug-in solar status

Bill pendingBill pending — in conference
Where Massachusetts stands: Massachusetts H.5175 / S.3166 has not been enacted. The House and Senate passed different versions; a conference committee was appointed July 16, 2026 and met July 29.

The key facts

Bill or law
H.5175, S.3166
Size limit
Not verified
Enacted
Not enacted
Effective date / scope
Not applicable or not verified

H.4744 is a historical precursor. H.5175 / S.3166 are the current references for the conference process.

Proposed wattage limits and notification rules are not enacted requirements or permission to install.

Before you buy in Massachusetts

This page is informational research, not legal advice — and it can fall out of date quickly. Before installing anything, confirm the current law and its start date, any size limit, your local building and fire codes, your utility’s requirements, that the kit is certified as a complete system, your landlord or homeowners association (HOA) rules, a safe way to mount it, and the maker’s instructions.

Massachusetts plug-in solar FAQ

Is plug-in solar legal in Massachusetts?

Massachusetts is currently listed as: Bill pending — in conference. Massachusetts H.5175 / S.3166 has not been enacted. The House and Senate passed different versions; a conference committee was appointed July 16, 2026 and met July 29. Always confirm current state law, local code, utility rules, and product certification before installing.

Do I need utility approval for plug-in solar in Massachusetts?

That depends on the current state rule, your utility tariff, the product, and your installation. Read the cited sources on this page and confirm directly with your utility before buying or plugging in a kit.

What should I check before buying a plug-in solar kit in Massachusetts?

Check the law or bill status, effective date, size limit, utility requirements, complete-system certification, local building and fire codes, landlord or HOA rules, mounting safety, and the manufacturer's instructions.

Estimate your savings in Massachusetts

Use the calculator to get a rough idea. For a truer number, swap the national average electricity price for your own rate (it’s on your bill), and remember that surplus power you send back may earn nothing unless your state and utility specifically pay for it.

Estimated monthly savings$12
Electricity made per year794 kWh
Time to pay off8.0 years

A planning estimate, not a promise. It doesn’t check whether plug-in solar is legal where you live, whether a kit is certified, whether your outlet or mount is suitable, or whether your utility pays for surplus power.

Sources