Before there was a "cleantech" industry, there was Tim Healy. Tim figured out that he could route electricity through digital switches and create an energy marketplace. Companies could trade and share their energy when they weren't using it, then back it up on batteries for future needs. The concept was solid, but would utilities actually allow energy trading behind their backs? We invested anyway based on Tim's confidence and long-term vision. EnerNOC became an enormous success, paving the way for an entire cleantech industry. Today, EnerNOC's technology has saved more than 10,000 gigawatts of electricity since its inception. For perspective, ALL of San Francisco runs on just 6 gigawatts of electricity per year. Back founders who see the future before it exists.(Tim Draper)