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

Apply Today to the 2017 Cleantech Open Accelerator

by Cleantech Open


Apply%202017%20Paragraph%20Top.png

Recruitment%202017%20-%20Long%20Body%20FRecruitment%202017%20-%20Long%20Body%20SAccelerator%20Timeline.pngRecruitment%202017%20-%20Long%20Body%20T

APPLY_8813.png

Read more

Global Forum National Chemicals and Advanced Materials Prize: QLean Tech Enterprises

by Cleantech Open

QLean%20Tech_97d7.png

Read more

Global Forum National Energy Efficiency Prize: Proper Pipe

by Cleantech Open

PP_7d66.png

Read more

Global Forum National Water Technology Prize: Crystal Clear Technologies

by Cleantech Open

CCT.png

Read more

Featured Sponsors