If anyone's still checking a thread a few days old, I was talking about things like Florida's requirement that even if you're capable of being fully independent you be connected to the grid: http://www.wftv.com/news/local/want-solar-panels-you-still-h...

A side effect of that is that if the grid is down, you're also required to shut down your solar system (which makes complete sense, it's a safety thing to not have power sources connected while there's work being done) except that you're apparently not allowed to disconnect.

Discussion on [1] notes that disconnectable systems can be quite a bit more expensive, but it sounds like that's not even a legal option - no connection, no occupancy.

[1] https://www.dailykos.com/stories/2017/9/18/1699490/-Solar-Po...