What I got ready is a generator that I would wheel out back then plug that into a plug that runs back to my electric panel.
That way all I do is flip the breakers that I need in the house, Furnace, tank stuff and some lights.
This is kinda dangerous in the fact that if you don't turn you main breaker off it can back feed and zapp some line man. Or if the power comes back on and blows your generator up.