EM: It depends on where you are and what the house size is relative to the roof area, but it's a fair statement to say that most houses in the US have enough roof area to power all the needs of the house.
EM: To ovisi o vašoj lokaciji i veličini kuće u usporedbi s veličinom krova, ali mogu reći da većina kuća u SAD-u ima dovoljno velike krovove da opskrbe sve potrebe kućanstva.