This clever renewable energy concept is the brainchild of an American design group called SMIT (Sustainably Minded Interactive Technology). The house pictured below has been fitted with solar leaves (seen close up on left) These small flexible solar cells are apparently wired together and then onto the side of a building. They were inspired by ivy climbing up a wall. The cells flutter prettily in the wind – though one wonders how much wind they could withstand before they start to blow off. The designers also have a solar leaf that is also a wind power solution. You can find out more about the solar leaves on the SMIT website.