California's SB 868 Caps Balcony Solar at 1,200 Watts and Puts Compliant Products a Year Away

The number that matters in California's new plug-in solar law is not the 1,200 watts but the product timeline behind it. Governor Gavin Newsom signed SB 868 on September 30, 2026; the law takes effect on January 1, 2027, and models that meet state standards are expected on sale in mid-2027, according to Electrek and pv magazine USA.

The bill was authored by Senator Scott Wiener, who represents California's 11th district. The two outlets name it differently: Electrek calls it the Plug and Play Solar Act, pv magazine the Plug Into the Sun Act. The bill number, SB 868, is the same in both.

What the law specifies

Balcony solar means a small system that sits on a balcony, patio or yard and plugs into an ordinary 120-volt outlet. The pv magazine report describes the devices as "portable solar generation devices" designed to offset onsite electricity, connected through a receptacle to building wiring.

Requirement	Detail
Output cap	1,200 watts AC per dwelling
Certification	Underwriters Laboratories or equivalent lab
Outage behaviour	Must not feed the grid during an outage
Utility paperwork	Online notice: address, make, model, size
Effective	January 1, 2027

Utilities cannot require an interconnection agreement, advance approval or device fees. The utility exemption is scheduled to expire on January 1, 2030, per Electrek; pv magazine describes the same rules as repealing in 2030.

Why 1,200 watts is a modest ceiling

A 1,200 watt AC limit is the output of the inverter, not the panel rating. At a 120-volt outlet that is 10 amps, which is why the cap sits well inside a standard 15-amp household circuit. A system at the cap running flat out for five hours produces 6 kilowatt-hours; that figure is arithmetic on the cap, not a forecast, since real output depends on sun, angle and shading.

The safety condition carries more engineering weight than the cap. A device that keeps pushing power into a dead street can injure a lineworker, so the outage requirement forces anti-islanding behaviour into cheap hardware. That is what the UL certification step has to test, and it is why products cannot simply be imported from markets with different rules.

What the utility exemption removes

The practical effect is on the household's timeline. Under the reported rules a buyer sends the utility a simple online notice with the system's address, make, model and size, then plugs in. There is no interconnection study, no waiting for approval and no device fee.

That matters most for renters and apartment dwellers, the groups Electrek names alongside homeowners with unsuitable roofs. They are the households that cannot hire an installer for a roof array, and for whom a 1,200 watt device that moves with them is the only form of solar available.

The cost of the exemption falls on the utility's visibility. Many small inverters on one local circuit is a planning question, and the notice with address, make, model and size is the only record the law asks for; the exemption's 2030 end date is the next fixed point.

Where California sits among the states

Utah passed the first plug-in solar law, HB 340, in 2025, according to pv magazine. Eight more states had passed laws before California's signing, and 35 states considered them in 2026. New York's SUNNY Act passed its legislature in June 2026 and awaits Governor Kathy Hochul's signature.

California's 39 million residents make it the largest such market, per pv magazine. A single certified product design now has a buyer base larger than the other states' combined populations would need to justify a production run, which is the mechanism by which prices fall.

1. Passed before California (excluding Utah)8 states
2. Considered laws in 202635 states

Source: pv magazine USA, accessed 2026-10-02

What is not settled

The reports do not give a price for a compliant product. Neither names a manufacturer with a certified model. The mid-2027 sales window is an expectation, not a listing, and it falls six months after the law takes effect.

The companion bills matter for the grid side. Electrek lists SB 913, the Clean Local Power Act by Senator Josh Becker, and SB 905, a grid modernization bill by the same author, with a June 30, 2028 regulatory deadline for improving virtual power plant pathways. Kat Lockwood, CEO of The Climate Center, said: "Not only do these laws provide relief for Californians struggling with high utility bills, but they also create a foundation for climate action."

Plug-in solar also sits next to the other loads now arriving at the home outlet. Tesla's Emergency Drive Away concerns the charging connector, and Monta's unpatched EV-charging flaw shows what a flawed device on that circuit looks like.

What would change this read is a certification lab publishing a test protocol that small makers cannot afford; then the 1,200 watts is a permission few can use. The date to watch is January 1, 2027, when utilities lose the right to ask.