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Plug-in solar panels, explained and checked

Small solar kits that plug into a normal outlet are now legal in some places and not in others. We read the laws, say what they require, and put the date we last checked next to every one.

Your state is not in the list? We have not finished it yet. See the full tracker.

What are plug-in solar panels?

Plug-in solar (also called balcony solar or plugin solar) is a small kit you set up yourself. One or two panels, a small inverter, and a cord with a regular plug. You mount the panels on a railing, wall, fence or the ground, plug the cord into an outlet, and the power joins what your home is already using.

It is not a rooftop system. It is smaller, it does not need an installer's crew, and it does not pay you for what you do not use. Whether you are allowed to use one comes down to your state's law (or the national plug-in solar rules in Great Britain), and the safety label on the product. If you are in the UK, it is worth knowing what a plug-in kit costs there before you start comparing.

Plug-in solar and rooftop solar, side by side

Plug-in kitRooftop system
Who installs itYouA licensed installer
How it connectsA plug in an outletWired into your main panel
SizeSmall, usually 1,200 W or less in the laws so farSized to your whole home
Paid for exported powerGenerally noOften yes, through net metering
Renters and apartmentsCan be possibleRarely
Needs a roof you ownNoYes

What changed most recently

Why trust the dates

Every legal status here has been read from the law or the legislature's own record, then confirmed through a second route. Where we could not do both, we say so on the page. The methodology explains how, and the about page explains who we are and how the site is paid for. We do not take money to change a status.

Questions people ask

Is plug-in solar legal?
It depends on where you live. In the US it is decided state by state. Of the 12 states we have researched, 4 have a law in force and 6 more have signed one that has not fully started. In Great Britain it has been legal since 27 Aug 2026. We have not researched every US state, so the count is not a national total. See the state tracker
How does plug-in solar work?
A panel makes electricity from sunlight, a small inverter turns it into household current, and a cord with a regular plug carries it into an outlet. Your home uses it first, so you buy less from the grid. Read the full guide
Are plug-in solar panels worth it?
It depends on what you pay for electricity, how much sun the panels get, and how much of the power your home uses while the sun is up. We are still checking US prices and yields, so we are not going to give you a figure yet. The calculator method is on our methodology page. See how we work out savings
Do I need an electrician?
The state laws we have read mostly do not require one, because you plug the kit in instead of wiring it in. If your outlets or wiring are old, a licensed electrician is still worth asking.
Can renters use plug-in solar?
Sometimes. A few state laws say landlords cannot flatly ban a qualifying system, and Colorado lets a renter install one after telling the landlord. Others say nothing. Your state page lists what we found.
This is general information, not legal or electrical advice. If your socket or wiring is old, ask a licensed electrician first.