Plug-in solar explained: What balcony panels can do, where they're legal and why Oregon isn't there yet (Nov. 1)
Quick Read
Plug-in or "balcony" solar is a small kit, usually one or two panels and a microinverter, that plugs into a standard 120-volt outlet and feeds power into your home's circuits. Most U.S. laws cap it at 1,200 watts.
Ten states have passed plug-in solar laws, according to a state-by-state tracker. Utah was first in 2025. California's law takes effect Jan. 1, 2027.
Oregon is not one of them. House Bill 4080 got a hearing in February but died in committee when the short session ended in March. Backers expect to try again in 2027.
Until Oregon changes its law, PGE and other Oregon utilities still require an interconnection agreement before any customer generator runs on their system.
Solar used to mean a roof, a contractor and a five-figure loan. Plug-in solar flips that. You set a panel or two on a balcony railing, patio or fence, plug the cable into an outdoor outlet and the power offsets what your refrigerator, router and other appliances pull from the grid. Renters can take the kit with them when they move.
The idea took off in Germany, where an estimated 3 million balcony kits are in operation, according to a legislative summary prepared for the Eugene Water & Electric Board (EWEB). Now it is spreading state by state in the U.S.
The benefits
Low cost and no installer: Kits skip the permitting, labor and other "soft" costs that drive up the price of rooftop solar, EWEB's summary notes.
Renters and condo owners can play: People who don't control a roof can still make some of their own power, which is the main selling point lawmakers in California and Oregon cited.
Everyday savings: A kit near the 1,200-watt cap can power "a refrigerator and a few small household appliances," the Los Angeles Times reported. Savings depend on sun, placement and your power rate, and most state laws say plug-in systems do not get net metering credit for power that flows back to the grid.
Where it's legal in the U.S.
Utah opened the door. House Bill 340, which took effect May 7, 2025, defines a "portable solar generation device" as a movable system of up to 1,200 watts that plugs into a standard 120-volt outlet, meets the latest National Electrical Code and is certified by Underwriters Laboratories or an equivalent lab. It exempts those devices from interconnection agreements, bars utilities from requiring approval, fees or extra equipment, and requires a feature that keeps the system from energizing the house during an outage, according to the enrolled bill.
California followed on Sept. 30, 2026, when Gov. Gavin Newsom signed Senate Bill 868, the Plug and Play Solar Act by Sen. Scott Wiener. Starting Jan. 1, 2027, it exempts certified plug-in systems of up to 1,200 watts per dwelling from interconnection rules and fees, lets utilities require only a simple online registration, and, starting in 2030, bans the sale of plug-in devices that don't meet its safety rules, according to the chaptered bill.
In all, 10 states have enacted plug-in solar laws as of this week: Utah, Maine, Vermont, Colorado, Maryland, Connecticut, New Hampshire, Virginia, New Jersey and California, according to PluginSolarTracker, which says it reviewed each statute. Six are already in force. California, New Hampshire and Virginia take effect Jan. 1, 2027, and New Jersey's on March 1, 2027. Most use the 1,200-watt cap. Colorado allows up to 1,920 watts, and Maine limits do-it-yourself installs to 420 watts unless a licensed electrician installs the kit, the trackers report.
Bills are also moving in New York, Illinois, Massachusetts, Michigan, Ohio, Pennsylvania, Rhode Island and the District of Columbia, according to CanIPlugInSolar.
The safety rules: UL 3700 and the NEC
UL 3700, published in December 2025, is the first U.S. safety standard written specifically for plug-in solar. Of the 10 state laws, three (Maine, Vermont and New Jersey) name it outright, while the others require listing by a nationally recognized testing laboratory, according to CanIPlugInSolar's review of the statutes.
The National Electrical Code has not caught up. "The 2026 NEC, like all previous editions, does not recognize the use of plug-in photovoltaic (PIPV) modules," UL Solutions' code team says, as quoted by CanIPlugInSolar. That is why states are writing their own laws to carve out a legal path.
Certified gear is still scarce. Rocky Mountain Power, the PacifiCorp utility that serves most of Utah, says on its plug-in solar page that, based on its reading of HB 340 and the UL and NEC requirements, "there does not appear to be any manufacturer whose PIPV product fully meets both applicable NEC compliance and the required UL certifications." The utility also says plug-in solar is allowed only for its Utah customers, not in its Wyoming and Idaho service areas.
Where Oregon stands
Oregon came close to joining the list. House Bill 4080 would have let any retail electricity customer use portable solar devices totaling up to 1,200 watts after filing a free declaration with their utility, with no review, approval or interconnection agreement required. It also would have barred most landlord, homeowners association and condo bans, and would have taken effect Jan. 1, 2027, according to the bill and its staff measure summary.
The House Committee on Climate, Energy, and Environment held a public hearing Feb. 5, but the bill never advanced before the session ended. Utilities sought amendments protecting them from liability and requiring UL-listed anti-islanding protection that shuts the device off during an outage. Backers drafted those changes, but concerns from the Oregon Fire Chiefs, landlords and the International Brotherhood of Electrical Workers needed more time, EWEB's summary says. "This bill will likely be reintroduced next legislative session," it says. The 2027 session begins in January.
For now, that leaves Oregonians under the normal rules. Portland General Electric says an interconnection agreement "must be signed by you and PGE for every DER prior to the operation of the DER on the PGE system," according to its interconnection overview. DER stands for distributed energy resource, which includes customer-owned solar. Pacific Power, PacifiCorp's Oregon utility, has not published a plug-in policy for Oregon that Willamette News could find. Anyone in Oregon who wants to feed solar into a home circuit should call their utility first.
What to buy, and what to watch for
Willamette News could not find a UL 3700-certified, U.S. plug-in solar kit for sale on Amazon as of Sunday night, Nov. 1. Several "balcony" kits and microinverters listed there were unavailable, built for 230-volt European outlets, or did not list a U.S. safety certification. If you live in a state where plug-in solar is legal, check for UL 3700 or an equivalent lab listing before you buy.
The building blocks are easy to find. The Renogy 100-watt N-type solar panel is a top-selling, well-reviewed panel that also works for off-grid setups like RVs, cabins and battery banks, which need no utility approval. For permanent, permitted systems installed by an electrician, the Enphase IQ8+ microinverter is UL listed as PV rapid shutdown equipment. It is a hardwired 240-volt unit, not a plug-in device.
Sources
Utah Legislature: H.B. 340, Solar Power Amendments, enrolled copy (effective May 7, 2025)
Rocky Mountain Power: Portable solar generation (plug-in solar) guidance
California Legislature: SB 868, Electricity: portable solar generation devices, Chapter 985, Statutes of 2026 (approved Sept. 30, 2026)
Los Angeles Times: California just legalized plug-in panels (Sept. 30, 2026)
PluginSolarTracker: Balcony and plug-in solar laws by state
CanIPlugInSolar: UL 3700 or UL 1741? What your state's plug-in solar law says
Oregon Legislature: HB 4080, 2026 regular session
Oregon Legislative Policy and Research Office: HB 4080 staff measure summary
Eugene Water & Electric Board: 2026 legislative session summary (April 7, 2026)
Portland General Electric: Overview of the interconnection process
Cover photo: Oregon Department of Transportation via Wikimedia Commons, CC BY 2.0
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