In as little as a year, lowering your electricity bill could be as simple as buying a kit with a few solar panels and accessories, completing a quick online registration form, and plugging it into a standard outlet.
California lawmakers passed a bill on Wednesday night to formally legalize plug-in, or balcony, solar: small, portable and relatively inexpensive systems that do not require rewiring or the costly installation fees that often come with rooftop solar.
The legislation, SB 868, sailed through the state assembly and senate with bipartisan support. The bill now moves to the governor’s desk for signature.
The devices can be tented in a backyard, hung off a balcony or placed on a roof. Models range from as low as $300 to $2200, depending on size. The bill would open the solar market to people who were previously left out: renters, people with unsuitable roofs, and those lacking the capital to build out a rooftop system, which can cost in the tens of thousands of dollars.
“There’s no question SB 868 is the most exciting clean energy and energy affordability bill right now up for consideration in California,” said Bernadette Del Chiaro, senior vice president at the Environmental Working Group, a nonprofit that co-sponsored the bill. “You never get to pass a big controversial bill in one year. We’re poised to do that. It is a huge win.”
A wave of state legislation over the past 18 months is making balcony solar — a nascent technology in the U.S. — within reach of everyday Americans. Utah pioneered a law passed in March 2025, and others quickly followed.
Eight states now have bills on the books that allow a relatively straightforward process for purchasing and setting up balcony solar systems, including Colorado, Virginia and Maine. Bills in New York and New Jersey are awaiting the governors’ signatures, like California.
Advocates believe California’s market has massive potential. They’re motivated by Germany, where millions of solar panels dot balconies across the country.
Some of the state’s largest investor-owned utilities, however, opposed the legislation, citing safety and a concern that the systems would shift energy costs to people without solar power.
PG&E initially said it supported the bill if it were amended, but opposed the final version. Spokesperson Paul Doherty said the utility is concerned that certain safety and certification requirements on some systems would not be enforced until 2030.
But he said that the company “supports plug-in solar and the opportunities it could create for customers, particularly renters and others who have not had easy access to traditional rooftop solar.”
San Diego Gas & Electric also opposed the legislation, citing concerns that even if balcony solar is designed to prevent feeding power back to the grid, systems may malfunction and endanger workers or customers.
Southern California Edison originally opposed the bill but later took a neutral stance after bill authors updated safety standards and how people notify their utility of their systems, spokesperson David Eisenhauer said.
Notably, labor unions representing firefighters and PG&E employees dropped their opposition and took a neutral stance on the bill after lawmakers amended it to explicitly comply with state and national electrical codes.
If signed into law by Newsom, the legislation would exempt plug-in solar devices from what critics say is a cumbersome and expensive interconnection application process, and replace registration with a free and straightforward online form.
Some Californians have already installed plug-in solar panels, but utilities ask them to complete an interconnection agreement, citing state rules. If done through PG&E, for example, representatives from the utility said that process would cost roughly $100 to $800 and take about an hour. Typically, the approval comes through in three days, PG&E staff said.
But plug-in solar advocates argued that the interconnection process defeats the plug-and-play nature of the technology, and could double or triple its cost.
Their goal is to make the panels as ubiquitous and easy to install as any off-the-shelf appliance dotting the racks of a Home Depot or Costco.
The newly passed bill outlines several device requirements. The balcony solar systems must be capped at generating 1,200 watts per home, plug into a standard outlet, offset a customer’s onsite electricity use and meet state and national electrical codes. They also must be certified by an outside safety organization like Underwriters Laboratories and have a feature that would prevent electricity from feeding back into the grid if there’s a power outage.
Current plug-in solar models do not yet meet the outlined requirements, and customers therefore must still register their systems as though they are rooftop solar. Del Chiaro said there are already a few companies developing devices that will meet the standards in the new California legislation.
The bill is meant to help reduce the cost of power for Californians and “eliminates red tape, so that people in California can actually use plug-in solar right now,” bill author and state Sen. Scott Wiener said during an Assembly hearing in June.
Del Chiaro estimated that just one 400-watt solar panel would cover about 14% of a typical renter’s apartment’s annual electricity bill and translate to energy-bill savings of roughly $250 a year. That system would provide enough juice to run a refrigerator, modem and Wi-Fi. A larger, 1,200-watt system would generate enough energy to power a window air conditioning unit, “enabling families, especially in our hotter regions, to afford to cool their home on increasingly hot days,” Del Chiaro said.
Dozens of environmental and community groups and a few cities supported the bill.
Plug-in solar advocacy group and nonprofit Bright Saver tentatively celebrated the action.
“It’s a clear statement that the biggest state in the union wants this,” said Cora Stryker, the group’s co-founder, although she said she was not happy with an amendment sunsetting the legislation in 2030 and other provisions that could slow down the market for balcony solar.
“The devil in the details makes it not a home run. It makes it a fight that continues,” she said.
Fiscal analysis of the bill estimates implementation will cost the state between $200,000 and $500,000 annually to fund program administrator positions.
If Newsom signs, staff in Wiener’s office estimated that people would be able to buy compatible plug-in solar kits in the spring of 2027.
From KQED’s Climate desk, “Flipping the Switch” documents California’s transition to clean energy and what it means for you. What works? What doesn’t? How much does it cost? Help us find these answers and more by donating today.
