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

A LOOK BACK AT 2016 CLEAN ENERGY POLICY IN THE NORTHEAST

by Christina Guerra

Catching up with the 2016 Cleantech Open Northeast Regional Winners

by Christina Guerra

Cleantech Open Northeast Announces Top Cleantech and Energy Startups of 2016

by Chelsea Mattioda

CTOH2O in Action: Cleantech Open Semifinalist Teams Pursue Innovation in Water Technology

by Rebecca Noyes

Northeast Sponsors