For those who have burgeoning interest in biofuels, but are still lost in the terminology and technical jargon, this site from the US Department of Energy provides a straightforward and useful starting point. The reader with little technical background would be able to relate the word “biofuels” with other related concepts like “biomass”, “biomass-derived fuel”, “biomass power”’ “energy crops”, “bioethanol” and “biodiesel”. For example, “biofuels” is a term used for biomass-derived liquid fuels used for transportation. Here, “bioethanol” and “biodiesel” are considered important biofuels. In contrast, “biopower”, or “biomass power”, is the term used for systems that generate electricity or industrial process heat and steam. This would probably include “biogas” which is a mixture of methane and carbon dioxide from the anaerobic biological degradation of plant biomass and/or animal wastes. The Biomass Energy FAQ also provides a good overview of biomass energy feedstocks, and technologies for biomass energy processing..