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 Northeast Holds 2017 Business Briefing

by Elise Baker

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

Northeast Sponsors