Before installing solar panels, get a home energy audit to find out where you're wasting the most energy. Your house will be more comfortable if you seal leaks and add more insulation, so don't just slap solar panels on the roof without curbing energy use.
A premium home needs a fancy gas range, right? Wrong! An electric induction burner has the same power and quick response as a gas flame, but it uses energy more efficiently and won't demand (cold) makeup air as it gobbles up oxygen. And chefs love them!