This a great thread guys, we need more of these here!.
One other thing that is being sold here, quite prolifically so I'm told, is the solar water heater, it is a unit that is totally self-contained and is installed on your roof.
It works on UV light not actually heat from the sun, so even on a cloudly sort of day, you can expect to get a reasonable supply of hot water.
Now considering that Hot water is a large degree of people's electricity bills, would it make sense that solar panels and this thing would make a house a LOT more energy efficient?.
