Why do Europeans need permission from their governors to buy solar panels? I bet you also need to pay taxes on the energy you generate even though you alleviate the infrastructure need.
Because those "governors" need to first ensure that their grids and home electrical systems are equipped to handle a solar system pumping into the house power system.
You speak as though that were a bad thing. I'd rather not have people accidentally burning their houses down.
Once it's approved for an area, you go to your local shop, buy an approved PV system, and plug it in. No fuss, no worries, and your insurer must cover it.
If you pay tax on generated energy they would have to let you deprecate the cost of the panel as a cost. Would be interesting as to where that lands and if it makes much tax revenue at all.