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

Sparkplug Power and Xively Partner Up to Improve Grid Management

by Riddhi Samtani

Cleantech Open Northeast Hosts 2017 Program Kickoff

by Elise Baker

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

Northeast Sponsors