We have had a few power cuts so went and bought a portable silent camouflaged 3KW Generator. Always follows a virus or disease............power or utility cuts, or even petrol rationing.
Now the hard part, finding a space for the switching unit next to the fuse box, and placing a discreet caravan plug on the outside wall to hook up to.
Bought it thinking it was Germanicon but made in China

Bohmer-AG W5500I Petrol Inverter Generator - 3000W - Union Mart Ltd : Union Mart Ltd

Electric start and pull start