Can I Get Balcony Solar in Massachusetts?
Balcony solar is not legal in Massachusetts yet, at least not in the clean, no-paperwork way it works in the nine states that have passed laws for it. A bill spelling out the rules cleared the House in February. The Senate passed its own version on July 1. Since late July, a conference committee has been trying to turn those two versions into one. Until that happens and the governor signs it, your utility’s standard interconnection rules still apply.
That’s the short answer. The longer one matters, because Massachusetts is now one of the last holdouts in New England and the pace of this thing has been genuinely strange to watch.
What is balcony solar, exactly?
The technical name in most of these bills is a “portable solar generation device.” That means a movable photovoltaic system, usually capped around 1,200 watts of AC inverter output, that connects to a building’s electrical system through a standard 120-volt outlet, is meant to offset part of what you’re already using, and carries anti-islanding protection so it shuts down if the grid goes down.
Put more simply: it’s one to four solar panels you hang on a railing, lean against a fence, or set in the yard, wired to a small inverter that plugs into a regular wall socket.
The easiest way to picture it is to think about every other thing plugged into your walls. A refrigerator pulls power in from the outlet. This pushes power out into the outlet, and whatever else is running in your home grabs it before the grid does. You’re not storing it, you’re not selling it, you’re just buying less.
You’ll see it called a few different things depending on who’s writing: plug-in solar, portable solar, apartment solar, plug-and-play solar, PIPV, or the German term Balkonkraftwerk. They all describe the same product.
Is balcony solar legal in Massachusetts right now?
No. Here is the actual sequence, all of it on the record:
The House passed H.5175, an omnibus energy affordability bill carrying plug-in solar provisions, by a vote of 128 to 27 on February 26, 2026. The Senate then substituted its own text rather than voting on the House bill and passed it 32 to 8 on July 1, 2026.
Two different bills, one subject. So a conference committee was appointed to reconcile them. Representative Mark Cusack and Senator Michael Barrett convened that committee on July 29, 2026, per the Legislature’s own event record.
As of today, no compromise bill has come out of conference. Nothing has reached Governor Healey’s desk. Anyone telling you balcony solar is legal in Massachusetts, or quoting you a firm date for when it will be, is getting ahead of the record.
What we do know about the administration’s posture: Healey’s Office of Energy and Environmental Affairs told WBZ in August that plug-in solar is “an exciting new development” that would make solar an option for more people. That’s supportive language, not a signature.
One thing to keep an eye on. Because the House and Senate versions still differ, the specifics that matter most to you (the wattage cap, what certification a device needs, and whether a landlord can say no) aren’t settled until the conference report is public. We’ll update this page when it is.
What about New Hampshire?
New Hampshire already did it. Governor Kelly Ayotte signed SB 540 in early July 2026, which NHPR reported put the state alongside Maine, Vermont and Connecticut. The law defines portable solar generation devices, exempts them from utility interconnection requirements and net metering, and takes effect January 1, 2027.
Utilities can’t charge extra fees or demand prior approval for systems that meet the safety requirements, and the cap is 1,200 watts of AC output per meter.
So if you’re in southern New Hampshire, your clock is a calendar date. If you’re in Massachusetts, your clock is a conference committee.
Which states already allow it?
Utah went first, in March 2025. Since then Colorado, Connecticut, Maine, Maryland, New Hampshire, Vermont, Virginia and New Jersey have all enacted laws, with New Jersey’s governor signing on September 1, 2026. Canary Media keeps a running state-by-state tracker that’s the most current thing out there.
California’s legislature passed its own bill in late August and it’s sitting with Governor Newsom. New York’s SUNNY Act cleared both chambers back in May and is waiting on Governor Hochul.
For context on why this keeps happening: Germany’s federal network agency had more than 1.3 million plug-in systems registered as of early 2026, adding up to roughly 1.34 gigawatts. Real numbers are probably higher, since registration compliance isn’t perfect. Germany got there by treating these as appliances instead of electrical installations, and by giving renters a legal right to install one.
What would balcony solar actually save you in Massachusetts?
Start with the rate, because that’s the whole argument. Massachusetts residential electricity runs around 31 cents per kilowatt-hour against a national average near 18 cents, according to EIA. On top of that, Eversource’s basic service supply rate went from 15.6 to 17.3 cents on August 1, and National Grid’s fixed option moved from 15.372 to 17.185 cents.
Now the production math, with our assumptions on the table. An 800-watt AC system in eastern Massachusetts, mounted flat against a railing, should land somewhere in the 700 to 1,000 kWh per year range (railing-mounted panels sit vertical, which costs you meaningful output compared to a tilted roof array, so we’re using the low end of what the equipment could do in a perfect world). At current Massachusetts rates that’s roughly $200 to $300 a year, and only if you’re actually home using the power while the sun is up.
Kit prices generally run $500 to $1,500 depending on panel count and mounting hardware. WBZ profiled a Fitchburg homeowner named Andre who paid about $1,500 for two panels, an inverter and mounting after a $1,200 summer electric bill got his attention. He’s tracking roughly 10% off his usage from the first array.
Payback lands somewhere in the three to seven year range on those numbers. That’s a real return, and it is not rooftop solar. A full roof system offsets most of a home’s usage and qualifies for state incentive programs. A plug-in system takes a bite out of your baseload and nothing more.
Two things people get wrong, and they’re both important:
You don’t get paid for what you export. These laws exempt plug-in devices from interconnection, and most of them exempt the devices from net metering right along with it. Power you generate and don’t use just goes out to the grid uncompensated. Your savings come entirely from self-consumption, which is why a household with a daytime baseload (a fridge, a router, a home office, a dehumidifier) does better than one that’s empty from 8 to 6.
It’s not backup power. Anti-islanding protection is mandatory in every version of these laws, which means the system shuts itself off during an outage. That’s the point, it keeps line workers from getting hurt. If you want power when the grid drops, you need a battery.
Is plug-in solar safe?
This is the legitimate part of the utility objection, and it’s worth understanding rather than dismissing.
Household branch circuits were designed for power flowing one direction, from your panel out to your outlets. When a solar device pushes power back into that same circuit, current from the utility and current from the panels can add up past what the wire is rated for without the breaker seeing anything wrong. There’s also the exposed-prong problem: unplug a live cord on a sunny afternoon and those metal pins could still be energized.
In December 2025, UL Solutions published an Outline of Investigation for plug-in photovoltaic equipment, and on January 8, 2026 launched a certification program built around it. The standard is UL 3700. It requires the system to prevent contact with live parts, protect against circuit overload, and stop current from flowing the wrong way. Ken Boyce at UL Solutions framed it as defining how these systems get built, evaluated and installed so more people can access solar safely.
Nearly every state law now points at exactly this: certification by UL or an equivalent nationally recognized testing lab. That certification is the gate, and it’s why buying the cheapest overseas kit you can find on a marketplace listing is a bad idea regardless of what the law eventually says.
Who is balcony solar actually for?
About 37% of Massachusetts households rent, which works out to roughly a million households, based on Census figures putting the owner-occupied rate at 62.5%. Almost none of them can put panels on a roof they don’t own.
Add condo owners who’d need association approval for anything permanent, homeowners with a north-facing or heavily shaded roof, anyone whose roof needs replacing before it could carry an array, and people who just aren’t ready to commit to a full system. Put together, that’s a large group of people Massachusetts has had nothing to offer until now.
A caution for renters and condo owners: even after a state law passes, your lease and your condo documents still exist. Some of the other states wrote landlord protections into their statutes and some didn’t, and we won’t know which way Massachusetts went until the conference report is out. Read your lease before you buy anything.
What should you do right now?
Not much, honestly, and we’d rather say that than sell you something.
There is no Massachusetts law on the books yet. There’s no certified product ecosystem to speak of. Boston Solar isn’t selling balcony solar today, and we’re not taking deposits or payments for it.
What we are doing is watching this closely, because we’ve been installing solar across Massachusetts and New Hampshire since 2011 and we think this is the biggest opening for renters and condo owners we’ve seen in that time.
Join the balcony solar waitlist and we’ll email you when the conference committee reports out, when a bill gets signed, and when there’s a certified product we’d actually put our name on. No cost, no commitment, and you can leave the list whenever you want.
Sources
- Massachusetts Legislature, H.5175 bill page
- Massachusetts Legislature, Energy conference committee meeting record, July 29, 2026
- MASSPIRG, Senate passes energy bill, July 2026
- CBS Boston / WBZ, Is Massachusetts ready to allow plug-in solar panels? (August 12, 2026)
- NHPR, New Hampshire joins states with plug-in solar laws
- NH Business Review, New state law empowers homeowners with balcony solar panels
- Canary Media, Where does balcony solar stand in your state?
- UL Solutions, Testing and certification framework for plug-in solar (January 8, 2026)
- U.S. Energy Information Administration, Massachusetts state energy data
- Boston.com, Electric utility rates going up Aug. 1
- U.S. Census Bureau, Massachusetts QuickFacts
Last updated September 15, 2026. Balcony solar legislation in Massachusetts is active and unresolved. Nothing here is a guarantee that a law will pass or a prediction of when.
