Affordable plug-in solar panels, gaining popularity in the US, offer a cheaper alternative to rooftop solar systems. These smaller systems, about the size of a door, are easier to install and require less extensive home modifications. While some utilities require interconnection agreements, others don't, creating some uncertainty for consumers. Utah has passed legislation supporting plug-in solar, streamlining regulations and boosting demand. Manufacturers are seeing increased sales, driven by both environmental concerns and the recent elimination of residential rooftop solar tax credits.

Prepared by Jonathan Pierce and reviewed by editorial team.