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

Two thousand and sixteen was undeniably a year of clean energy policy progress in the northeast. Policymakers in the northeast turned out some of the most...

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Catching up with the 2016 Cleantech Open Northeast Regional Winners

by Christina Guerra

On October 27th, Cleantech Open Northeast announced this year’s four regional accelerator winners who will represent the Northeast at Cleantech Open’s Global...

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Cleantech Open Northeast Announces Top Cleantech and Energy Startups of 2016

by Chelsea Mattioda

Four companies focusing on water, efficiency, and energy generation receive $20,000 in prizes.

Boston, Mass. -- October 27, 2016 --  Cleantech Open Northeast, the...

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

by Rebecca Noyes

Water. It is the newest word in cleantech innovation, and a resource that every individual and company must consider on a daily basis. According to a report published...

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