A team from Wake Forest University is about to field-test a new home solar energy system that collects power not only from visible sunlight but from the sun's heat, as well. The new … Another Option for Building-Integrated Solar … Plumbing. F or decades we have been taught not to waste energy. We know that we should turn off lights and water when we aren't using them. We know we should insulate our homes to prevent heat loss and cut down on air conditioning.