Since 2005 Cleantech Open (CTO) has trained over 1200 early-stage clean technology startup entrepreneurs through its annual business accelerator. Seventy percent 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

Touch Light Innovations

by Steve Webster

Illinois researchers seek a battery you can pump into your car’s tank by David J. Unger

by Steve Webster

The Key to Getting Max Value? Choosing the Right Landing Zone by Scott Propp

by Steve Webster

Cleantech Open-Midwest Announces New Student Division for 2017

by Steve Webster

Midwest Sponsors