Anyone using plug in (aka balcony) solar?

I understand Utah made it legal but it hasn't really caught on in the US yet. Apparently it's everywhere in Germany.

https://solarunitedneighbors.org/resources/what-to-know-about-plug-in-solar/

Very encouraging to see UL has released a standard, UL3700, for plug in solar hardware. Looks like they figured out how to ensure the homes internal wiring won't inadvertently be overloaded.