We had 5 kids - needed 6 bedrooms+.

BUT - the reason I have so much solar is I kept buying electric cars and wanted to offset ALL my energy needs on a yearly basis for house AND cars. Currently have 3 Tesla's. But have owned 5 Tesla's and all our kids but the first drove Chevy Volts (at one time we owned 5 Volts and a Tesla).

Currently my utility bill is $15/month for house (we do have gas for heat so a couple months a year the gas bill can be a couple hundred) AND the only time we pay for any other fuel is for travel (supercharges and airplane fuel! lol).