Official Briefing: State-Level Legislation on Portable Plug-in Solar Systems

Official legislative records show that the policy move toward small plug-in or portable solar systems has already advanced from proposal to law in several states. As of May 21, 2026, Utah’s H.B. 340 (Solar Power Amendments) is marked Governor Signed; Virginia’s SB250 and HB395 are marked Acts of Assembly Chapter; Colorado’s HB26-1007 is marked Became Law; Maine’s LD 1730 was Enacted and signed on April 6, 2026; and Maryland’s relevant enacted measure appears in Chapter 353 (HB1532), which was Approved by the Governor on May 12, 2026.

The five enactments are not identical, but they point in the same direction: a lighter regulatory pathway for small residential photovoltaic devices. Utah’s bill defines a portable solar generation device with a capped output; Virginia’s bills address small portable solar generation devices and remove them from certain interconnection restrictions; Colorado’s law prohibits utilities from requiring prior approval before installation or use; Maine’s enacted law is titled to make small plug-in solar generation devices accessible to residents; and Maryland’s Chapter 353 allows one portable solar energy generating system per electric meter for residential use only, limits the device to 1,200 watts back to the building’s electrical system, and excludes it from net metering and renewable energy credit treatment.

Compared with traditional rooftop solar, these systems are smaller, more standardized, and designed for connection through an existing outlet or similarly simplified pathway rather than a full rooftop installation and utility interconnection package. Traditional systems typically involve fixed mounting, more extensive electrical review, and standard net-metering or interconnection procedures; by contrast, the new state laws generally reduce or waive those steps for qualifying portable systems while still preserving safety, code, and technical-limit requirements. That comparison is an inference drawn directly from the statutory text.

Bottom line: the official record supports the conclusion that this is no longer just a policy discussion. The relevant states have already enacted legislation, but the exact rules still vary by state, especially on wattage limits, notification requirements, utility obligations, and whether the system is treated as net-metering eligible.