Michael Coren 01.19.12 12:10 AM The sun pours down a lot of energy onto the surface of the ocean every day. Now scientists are figuring out a way to get that energy onto the grid, with only seawater as a waste product. It just requires a really, really long pipe. Newsletter Get the latest Fast Company stories delivered to your inbox daily. Send I'd also like to receive special Fast Company offers ARE YOU REGISTERED TO VOTE? Register now to make sure you have a voice in the election.