California is 10th state to legalize balcony solar

California has legalized "balcony solar," small plug-in solar panel systems that renters and homeowners can buy and plug directly into an outlet, without going through the usual utility approval process (called an interconnection agreement). The new law, SB 868, or the Plug and Play Solar Act, makes California the tenth state to allow these systems. Until now, the cost and delay of getting utility sign-off has kept many people from installing them, even though the panels themselves are simple to set up.

The law sets safety rules: systems must be certified by UL or an equivalent testing lab, must automatically shut off within seconds if the power grid goes down, and are capped at 1,200 watts. That size limit means these panels work best as a way to offset part of your electric bill, not replace a full rooftop solar system. One thing to know: the exemption from needing utility approval is set to expire on January 1, 2030, unless lawmakers extend it, so the law gives the market a four-year window to prove itself.

For homeowners and renters in California, this means you may soon be able to buy a small solar panel system from a retailer and plug it in yourself, similar to a major appliance, without hiring an electrician or filing utility paperwork first. If you live outside California, it's worth checking whether your state is one of the nine others that already allow balcony solar, since rules and size limits vary by state.