Two Swedish companies, two Danish, one Finnish and one Norwegian are listed at the 2011 Global Cleantech 100, produced by the Cleantech Group in collaboration with the Guardian.The US dominates the list by absolute numbers, but Sweden, Denmark, Israel and the Netherlands dominate in nominations per unit of GDP.To qualify for the list, companies must be independent, for-profit, cleantech companies that are not listed on any major stock exchange. Some 4,500 nominations from 45 countries were received.Chemrec AB is a Swedish company providing technology for black liquor gasification, which integrated in pulp mills provides the opportunity to produce large quantities of renewable motor fuels or electricity from biomass. The technology has potential to globally provide motor fuels equivalent to over 45 billion liters per year of gasolineBoth Chemrec anf ClimateWell, the other Swedish company on the list, were included also last year. ClimateWell said in a statement that the Global Cleantech 100 list is unique in the sector, because it highlights the promise of private clean technology companies from all around the world, focusing on those companies which are most likely to make the most significant market impact over the next five to ten years. /AA