Daniyal AhmedCalifornia has become the 10th U.S. state to legalize plug-in balcony solar systems, opening a new path for renters, apartment residents and homeowners to generate electricity without installing a conventional rooftop solar array.
Gov. Gavin Newsom signed Senate Bill 868 into law on September 30. The legislation, authored by state Sen. Scott Wiener, establishes statewide rules for small portable solar systems that connect directly to a building’s electrical system through a receptacle.
The law removes conventional utility interconnection requirements for qualifying systems, allowing consumers to purchase certified portable solar equipment and connect it without first completing the same approval process required for larger rooftop solar installations.
California joins nine other states that have established laws allowing or facilitating plug-in solar systems.
Table of contents
- California allows plug-in solar systems up to 1,200 W
- Balcony solar expands access for renters
- Interconnection exemption expires in 2030
- Plug-in solar expands across the U.S.
California allows plug-in solar systems up to 1,200 W
Under SB 868, a qualifying portable solar generation system can have a maximum combined output of 1,200 W AC per dwelling.
The equipment must be designed to connect and disconnect through a receptacle and must be intended primarily to offset electricity consumed at the property.
The law also establishes safety requirements for eligible systems. Equipment must comply with applicable provisions of the National Electrical Code and California Electrical Code and must be certified by a nationally recognized testing laboratory.
Systems must also include safeguards designed to prevent electricity from continuing to flow when the utility grid loses power, reducing potential risks to utility workers during outages.
These requirements distinguish qualifying balcony solar equipment from uncertified plug-in systems that consumers may already be able to purchase online.
Balcony solar expands access for renters
Plug-in solar, sometimes referred to as balcony solar, generally consists of one or more small photovoltaic panels connected to a compact inverter. The system feeds electricity directly into the home’s electrical system, reducing the amount of power the household needs to purchase from the grid.
Unlike conventional rooftop solar, the equipment can be portable and does not necessarily require permanent installation.
That makes the technology particularly relevant for renters, apartment residents and people who do not control their roofs.
California residents have already been purchasing plug-in solar equipment, but the technology previously existed in a regulatory gray area because distributed generation systems were generally subject to utility interconnection rules. The new law creates a specific legal framework for qualifying portable systems.
The Environmental Working Group, which co-sponsored SB 868 with the Abundance Network, estimates that a 400-W system could offset roughly 14% of an average California apartment’s electricity use. The group estimates potential savings of approximately $250 per year, although actual savings would vary substantially depending on system output, electricity rates, location and household consumption.
Interconnection exemption expires in 2030
One significant provision of SB 868 is temporary.
The exemption allowing qualifying portable solar systems to bypass conventional utility interconnection requirements is scheduled to expire on January 1, 2030. The provision was added during the legislative process following concerns from utilities.
Unless California lawmakers extend or modify the policy, portable solar systems could again become subject to utility interconnection requirements after that date.
Utilities raised several concerns while the legislation was being considered, including electrical safety, grid reliability and the possibility that reduced electricity purchases by participating customers could shift some grid costs to other ratepayers.
The Los Angeles Times reported that Southern California Edison dropped its opposition after amendments addressing safety and certification requirements, while Pacific Gas & Electric continued to raise concerns about implementation and potential effects on other customers.
Plug-in solar expands across the U.S.
California’s decision significantly expands the potential U.S. market for balcony solar because of the state’s population and high electricity rates.
Portable solar legislation has gained momentum across the country during 2026. Lawmakers in at least two dozen states introduced measures addressing plug-in solar earlier this year, while states including Utah, Maine, Virginia, Colorado and Maryland have adopted policies supporting the technology.
California’s law is scheduled to take effect January 1, 2027.
Actual deployment will also depend on the availability of equipment meeting the law’s certification and safety requirements. As a result, signing SB 868 establishes the legal framework for balcony solar in California, but consumers will still need qualifying certified products before taking advantage of the simplified rules.
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Sources
- California Governor’s Office, September 30, 2026 legislative update
- California Legislature, SB 868, Electricity: portable solar generation devices
- California Assembly Utilities and Energy Committee, SB 868 legislative analysis
- Los Angeles Times, reporting on California plug-in solar legislation
- Environmental Working Group, SB 868 policy information
- Solar Power World
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Marley Kakusa
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