There's been a wave of legislation[1] introduced in the US to legalize so-called "balcony solar," small grid-tied solar systems that plug into a regular household outlet with zero permitting or interconnect requirements. This is already common in Europe, it's mildly complicated by our split-phase system but not much.

The reason for the high burden today is people have developed an inflated sense of how much the kWh they generate is worth. They install massive systems on their roofs to try to "cancel out" their power bill by exporting their entire daily power consumption over the course of a few sunny hours, which (when all their neighbors do the same) ends up being a costly burden for grid operators who then pass the costs on to users without panels. Smaller systems focused on immediate, local consumption rather than export are much better for the grid which is why they have support.

1. https://www.canarymedia.com/articles/solar/balcony-solar-tak...