Clean Tech Open Northeast

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About us

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 use mentoring, training, and coaching to connect cleantech startups with the people and resources that will accelerate their success, as well as a national platform for media and public visibility.

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 are proud to work with partners all over the region to support the growth of innovative start-ups coming out of our tremendous research institutions and business community.

Some of our accomplishments include:

  • 2012 applicants representing all 7 Northeast States
  • More than $800M raised by our startups nationally
  • More than $230M raised by Northeast alumni companies alone over the past 5 years
  • Over 160 experienced mentors involved in our mentor program, working to support and encourage our start-up teams

Contact information

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337 Summer Street, Boston, MA, 02210, US

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