The Cleantech Open runs the world’s largest accelerator for clean technology startups. Our mission is to find, fund and foster entrepreneurs with big ideas that address today’s most urgent energy, environmental and economic challenges.
Since 2006, our one-of-a-kind annual Accelerator & Competition has helped 727 companies bring their ideas to fruition, in the United States alone. Up to 40% of each year’s US graduates raise third party capital; between them they have now raised over $800M. Fueled by a network of more than 2,000 volunteers, the Cleantech Open unites the best cleantech ideas with the resources they need.