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We find, fund, and foster the most promising cleantech startups on the planet.

Cleantech Open is...

the oldest and largest cleantech startup accelerator program, with the mission to find, fund, and foster entrepreneurs with ideas to solve our greatest environmental and energy challenges. Through our annual business competition and accelerator program, we connect cleantech startups with the people and resources that will accelerate their success, and provide a national platform for public visibility. 

Cleantech Open Northeast was founded in 2005 as the Ignite Clean Energy program by the Energy Special Interest Group (ESIG) of the MIT Enterprise Forum.
At the beginning, with less than 30 teams applying and a huge outpouring of community, business, academic, and volunteer enthusiasm, the program initially focused on student entrepreneurship at MIT and then expanded rapidly to the larger community.
In 2010, Ignite expanded its reach and impact by
joining forces with the national organization Cleantech Open,
creating the largest cleantech innovation footprint in the country.

Cleantech Open Northeast covers Massachusetts, Vermont, Maine, Connecticut, Rhode Island, New Hampshire, New York, Pennsylvania, and New Jersey.

We are proud to be a central part of the highly unique and productive regional cleantech ecosystem:
we work with partners all over the region to support the growth of innovative startups
coming out of our tremendous research institutions and business community.

In 2014, the New England Clean Energy Council (NECEC) and Cleantech Open Northeast formed a formal alliance to better facilitate and accelerate cleantech entrepreneurship. Aligned with CTONE, NECEC created the Cleantech Navigate Northeast program, which is targeted to helping Cleantech Open alumni entrepreneurs in the Northeast make quality, targeted connections on a regional scale. Learn more about NECEC's Cleantech Navigate Northeast here. Learn more about the alliance here.