expertinabox

The Cleantech Open runs the world's largest cleantech accelerator. 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 581 companies bring their ideas to fruition. These alumni have since raised $660M. Fueled by a network of more than 1,500 volunteers, the Cleantech Open unites the best cleantech ideas with the resources they need.