“Ten years out we want lamps that use 2 percent the energy and put out the same amount of light,” Doerr said at the beginning of his talk at GreenBeat 2009 today — indicative of his interest and that of his firm, Kleiner Perkins Caufield & Byers in the newest, boldest investments when it comes to cleantech and the grid. He began the conversation with VentureBeat editor Matt Marshall by comparing t