Things aren't quite as "sophisticated" (controlled) here.
I know some folks who have solar installed and connected through the mains. So they draw electric from the grid at night and feed it back into the grid during the day. No permit from the PEA.
As long as the electric bill doesn't go negative for the billing period, everybody is happy.
I’ve never had solar but don’t you have to let the electric company know so they can setup the net metering? If so they would know that is in the mix.