As I've said before, I occasionally run my house on listeroid power. If you have not done it, you need to. There is much to learn. Mine, a 20/2 twin, downrated to 12HP, will easily run my house and my 5 ton central air.
What's more interesting, is how I must manage the power. I can't, for example, start and run the well pump, the AC and my shop air compressor at the same time. But, I can operate off grid, without difficulty, for extended periods of time, and without excessive power management.