This is the second year of the Cleantech 100, first published in 2009 as a joint venture between the Guardian and the Cleantech Group as a true representation of global innovation and private company creation.
Which 100 of today's private cleantech companies are the most likely to make the most significant market impact over the next 5-10 years? Hundreds of worldwide cleantech experts – including companies themselves – nominated the list, which also included so-called "passive" nominations and validations derived from analysing market data, taking votes of confidence in a company's ability to achieve high growth and high-market impact from market transactions such as investment rounds, and major customer and partnership announcements. To be on the list, companies must be independent, for-profit, cleantech companies that are not listed on any major stock exchange. TaKaDu is a 2010, 2011 and 2012 Global Cleantech 100 Company.