About
Plug-in solar is the small kind: panels that run through an ordinary outlet, rather than a rooftop system wired into your electrical panel. It is a new enough category that the rules are still being written, and they change from one month to the next.
Plug-In Solar Panels follows those rules in two places: the United States, state by state, and Great Britain, where a national product framework came into force in 2026. Alongside the law it explains the shared basics: how plug-in solar works, panel watts versus inverter output, balcony use, batteries and power outages, plug-in versus rooftop solar, and the economics.
Where the facts come from matters. US state law is read from the legislature's own page or the enacted text; Great Britain from legislation.gov.uk, DESNZ, Ofgem, the Energy Networks Association and Energy Saving Trust; certification and technical points from UL, the relevant testing-laboratory standards and other official sources. Each state page links the bill or statute behind its facts, and every page carries the date it was last read.
It reports what those sources say and what that means for you, and it stops there. It can say that a law or a qualifying route is in force where the primary sources establish that. It does not certify a particular product or declare an individual installation legal, safe, or approved: that turns on your exact product, your utility or network operator, your local rules, and, where the law requires one, a licensed electrician. Some state routes need no electrical work; others, like Maine's higher tier, require a licensed electrician and a dedicated circuit.
Nobody pays to appear here, and there are no affiliate links. Plug-In Solar Panels has no tie to any government body, utility or network operator, UL Solutions, manufacturer, or retailer, and earns nothing from what it lists. State law is cited to the legislature's own page or the enacted text wherever a state has been read, and the tracker is explicit about which states have not yet been checked.
Spot an error, or a bill or rule that has moved since it was last checked? Email editor@pluginsolarpanels.org with the page and the source, and it gets fixed.