Cleantech Open Global

Cleantech Open (CTO) is the world's largest cleantech accelerator program, having trained over 4,000 entrepreneurs from 2,100 early-stage cleantech startups since its inception in 2005. The organization focuses on fostering innovation within the cleantech sector, with a significant portion of its recent cohorts comprising teams that include members identifying as BIPOC and/or women.

As a nonprofit organization largely run by volunteers, CTO has built a unique innovation ecosystem over the past two decades, supporting key cleantech hubs both in the U.S. and globally. The program has successfully helped alumni raise over $3 billion in equity, demonstrating its commitment to forging a clean and sustainable future.

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