So why hasn’t plug-in solar taken off in the U.S.?
State laws require the same kind of complex, technical diagram-heavy, and grid interconnection request process that you’d need for large solar systems. This needless bureaucracy makes these simple systems unaffordable.
The good news is that last year Utah became the first state to change its rules to allow people to use plug-in systems without this red tape. Dozens more states are considering legislation in 2026.