Best to have silent back up power in your home that no one knows about...generators can be heard by neighbours, causing a stampede.
How do you propose this silent back up power would work?
Nobody will notice your solar panels...
Portable power stations...Jackery etc brands.
1000w
1500w
1800w.
The Van Life community uses them all the time.
A bank of those charged up from house power and alway kept ready would power 850w microwaves to heat canned soup.
Small cannisters of propane and camping stoves.
Camping fridges could be powered by the Jackerys.
USB lights run from small usb battery pack charged from a Jackery.
A US man who had to have his van repaired hired a U Haul truck and lived in the back of that for 2 nights.
He used a small camping stove to cook himself a nice steak and veg dinner.
He strung some usb lights from Amazon around in the u haul and drank some beer with his meal.
Slept in a sleeping bag.
Off grid living.