Nominations now open

In the fall of 2010, the Cleantech Group and the Guardian will publish the latest iteration of the Cleantech Global 100, a list of the 100 most promising private clean technology companies on the planet. View last year's winners here.

Select your top 10 private cleantech companies using the form below before nominations close June 30th, 2010. The final list of 100 private companies will be derived from nominations and the views of a panel of experts to reflect the combined wisdom of the international cleantech community. More details will be available later in 2010.