Except they will be stoned to death getting back from the bakers.
Maybe it will not get to that as after a while those with lights on will be recognised by mobs who will evict them and take over their homes. No point in solar or wind powered security devices. The mobs will only need to wait a few hours for renewables to cease producing and entry will be easy.
FIT parasites should be quaking in their boots at their grim future wandering what remains of the UK with a long lingering death in a cold damp cave as communes take over the shiny properties that stand out like a sore thumb.
Some have said the next wars will be over water, in the UK they will be over energy.