Brazil is the country with the longest tradition of renewable energy
promotions policies for transport fuel, not taking into account the experience of some countries in
war-economy situations. In recent years, some more countries - most
notably the United States - have started policies to give biofuels a significant
share in the fuels market. The
REN21 Global Status Reports
gives an
overview.
In 2006, biofuels have become the most vibrant issue in
renewable energy all over the world, nourishing high expectations but
also concerns. The timely study 
Biofuels for Transportation
produced by Worldwatch and GTZ for the German Government provides an in-depth analysis of the current issues and recommendations to decision-makers
