Source: NYT > Business (paywall)
Ten states have now legalized plug-in solar panels that connect directly to standard outlets, removing the permitting and inspection requirements that once stretched residential solar installations into months-long projects. This regulatory shift matters because it converts solar from a capital-intensive, contractor-dependent installation into a consumer commodity—accelerating adoption among renters and homeowners who lack the appetite or liquidity for $15,000+ roof systems. The competitive pressure flows backward into the traditional solar industry, where financing, permitting, and installation labor compose 50-60% of customer cost.