California legalizes plug-in solar, and sidesteps its own utility gatekeeping

California lawmakers just passed Senate Bill 868, which legalizes plug-in solar systems for renters, apartment dwellers, and homeowners who cannot or will not afford a rooftop installation.^[1] The bill permits systems up to 1,200 watts to plug directly into standard 120-volt outlets, requiring only UL certification and compliance with electrical code, no utility interconnection application, no $100 to $800 fee, no waiting.^[1] If Governor Newsom signs, compatible systems could be available by spring 2027.^[1] On its surface, this is a narrow policy tweak: allowing a small, portable solar device to feed a home's own circuits. But it is actually an indictment of how California's utilities have weaponized interconnection to ration distributed solar.

Here is the mechanism. Under NEC Article 705 (interconnected electric power production sources), any grid-tied PV system, even a rooftop array on your own home, must be registered with the utility and comply with its interconnection rules. California utilities, led by PG&E, have used this gatekeeping to extract fees, delay approvals, and suppress adoption among renters and cost-conscious owners. PG&E itself disclosed that its interconnection process costs customers $100 to $800 and requires about an hour of paperwork, with approvals typically taking three days.^[1] For a 1,200-watt system costing $1,200 to $1,500 installed, that $500+ fee is a 40 percent tax on entry. For renters who cannot amortize a rooftop system over a 25-year mortgage, the interconnection barrier is often fatal. SB 868 carves out this category of system, small, non-export or export-managed, plugged into a standard receptacle, and allows it to operate under building codes and UL standards alone, sidestepping the utility entirely.

The political story is sharper than the engineering one. Utilities do not actually need to approve a 1,200-watt load on a 15 or 20 amp residential circuit; the circuit breaker and the home's electrical panel already govern that risk. The interconnection process exists to protect the grid from backfeed during outages, a real concern for older, non-UL-listed equipment, but SB 868 requires UL certification and anti-backfeed relays, removing that justification. What utilities actually lose is the registration data (adoption tracking) and the ability to say no. California's community solar pushback, NEM 3.0's export-rate gutting, and now the plug-in carve-out are all symptoms of the same disease: monopolies resisting the loss of captive load. By forcing registration and approval for rooftop solar while permitting plug-in systems to operate unlicensed, California is signaling that the utility's power to approve is not a safety mechanism, it is rent extraction.

The second bill, AB 1813, strengthens community solar programs, requiring the California Public Utilities Commission to develop a more robust offering.^[2] Together, these moves sketch a floor of access: renters and cost-constrained homeowners can now choose between plug-in solar (owned, portable, no permitting), community solar (shared generation, subscribed, no rooftop required), and traditional rooftop arrays for those who can afford and own them. The effect is to fragment the monopoly's load. A 1,200-watt plug-in system offsetting 100 to 150 kWh per year is not a rooftop array, it is not competing for $12,000 to $15,000 in turnkey installation, but it is electricity the grid no longer sells to that customer. At scale, thousands of modest solar adapters across a service territory erode volumetric throughput. Utilities know this and have fought it accordingly.

The lesson for other states is brutal and actionable. If your state or local utility requires an interconnection application for grid-tied PV, ask why. Examine the fee, the timeline, and the criteria for approval. If the utility denies or delays interconnections for systems under 10 kW without an engineering study, it is not protecting the grid, it is protecting revenue. Texas, Florida, and most of the Northeast impose interconnection barriers far steeper than California's. Some jurisdictions (Maine, parts of New Mexico) have adopted streamlined processes; others have permit-by-rule thresholds that exempt small systems entirely. The federal government funded SolarAPP+, an instant-permitting platform that works where jurisdictions adopt it, but adoption remains patchy because utilities and their contractors have no incentive to speed permitting that undermines their market. California's move, cutting the Gordian knot by making a category of solar invisible to the utility, is a workaround born of frustration. The honest move would be to slash interconnection fees to cost-of-processing, enforce a 15-day approval standard with deemed-approved fallback, and ban capricious denials. But that would require utilities to treat distributed solar as a resource, not a threat.