Summary: They don’t really have a legal framework for houses in the middle of towns and cities who suddenly DOESN’T want a grid connection, and also don’t want to pay for it. There is also no national legislation for this, so each town/city does their own thing. A large scale moving away will be a disaster for some (since they cross-subsidise things from electricity), so don’t expect it to come easy.
Did I get that about right ? 