The new face of Cleantech innovation
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.
Cleantech Open at the Forefront of Social Entrepreneurialism
by Emily Lundberg
Why make the effort? Because the Cleantech Open accelerator’s broad cross-sector approach to innovation promotes cross-pollination with a wide range of business models,...
Startup Accelerator and Competition for Promising Cleantech Entrepreneurs Announces May 1 Deadline
by Beth Zonis
Three CTO Alumni Take their Technology Abroad
by Jessica Smothermon
The portfolio of companies that have moved through Cleantech Open's annual accelerator since its launch in 2005 contains a multitude and variety of #CTOAlumniSuccess stories....