Since 2005 Cleantech Open (CTO) has trained over 1200 early-stage clean technology startup entrepreneurs through its annual business accelerator. A majority of CTO alumni have survived the merciless technology startup "valley of death" and gone on to raise $1.2 billion and create over 3,000 clean economy jobs.

CTO's one-of-a-kind innovation ecosystem built over the last 11 years of programming spans key cleantech innovation hubs in the U.S. and globally. As a non-profit organization run largely by volunteers, there are many ways to contribute. Join our global network of innovation and together let's forge a clean and sustainable future.

CTO BLOG

Cleantech Open Alumni Make an Impact in 2015

by Jane Richards

More Cleantech Winners in the Pacific Northwest

by Chris Bradbury

Cleantech Innovation Awarded at our 2015 Western Region Showcase

by Jane Richards

Green Build in Pleasanton

by Kim Chase

West Sponsors