First UL 3700-Compliant Plug-In Solar Microinverter Reaches US Buyers

Hoymiles' HiFlow Pro, the first plug-in solar microinverter certified under UL 3700, is now available to US buyers. UL 3700, adopted in December 2025, is the inaugural North American safety standard for plug-in PV systems — a category that lets homeowners and renters connect small panels directly to household outlets, bypassing conventional permitting and inspection.