My neighbors, that is they live 1 mile away, just put up a little tiny house that is 10 ft by 22 feet. They set a bunch of solar cells in the yard. They planned on running it entirely on solar. But, on hot summer days they have a gas powered generator running 8 hours a day. Their solar cells don't make enough electricity to run the window unit a/c.
of course it doesnt
Ive dealt with this company for support
https://backwoodssolar.com
