The Cleantech 50 to Watch is an annual list of early-stage innovators taking action on the climate crisis. The entrepreneurs on the list are creating new technologies and business models that could advance geothermal heating, batteries, recycling, packaging, and sustainable food, as well as many other innovations.

To create the list, we put together a diverse panel of over 30 early-stage innovation and investment experts. We asked them to nominate and review the companies that most impressed them and combined that information with our own nominations and research on early-stage awards.

Want to meet the innovators on this year’s Cleantech 50 to Watch list and gain insight into the technologies and business models they’re using to take action on the climate crisis? Join us at Cleantech Forum Europe for your chance to meet many companies on the list, as well as plenty of other innovators making great progress.

Think your company should be on this list? Create your profile on i3 to make sure you are in the running for next year.