as long as the gas supply is there too....worthless with out fuel, and places can't pump if they don't have power....the neighbor learned that the hard way and had to drive a distance to get some, and those stations were packed with drivers wanting fuel
I have a backup but most of the time it is a loaner to neighbors that extension cords won't reach ....across the street
I play unplug and plug in switch to the next after a hour or so,,,,just to keep the fridge's running and freezers maybe a light or TV for the neighbors....I have saved many pounds of food for the neighbors during outages