[jacquesm]

I think you're more than a bit power hungry. My house consumed < 5 KWh max per day, so even running to 50% discharge that bank would power the house for up to 5 days.

It's much easier to save on consumption than to create capacity, especially stored capacity. You don't really realize just how much energy goes into AC, heating, washing and so on until you've lived off the grid for a bit. And then you'll quickly learn how to conserve energy. I'm currently living in an on-grid house, the old habits die hard, my computers are probably the biggest consumers here.

Anyway, if 22KW is your power budget then don't bother going off-grid without a generator.

Battery powered houses make perfect sense if you're able to conserve power, if you can't then of course it does not make sense.

[IgorPartola]

That I suppose is the line for me. I am unwilling to go to a point where I cannot use my washer/dryer, dishwasher, AC, etc. I believe the majority of the developed world is with me on this, though of course there is a minority that have other priorities.