 In October 2016 the German Biomass Research Center ("") (DBFZ) launched an online biomass atlas for researchers, investors and the interested public.The energy efficiency bottom-up index for the whole economy (ODEX) in Germany decreased by 18% between 1991–2006, which is equivalent to an energy efficiency improvement by 1.2% per annum on average based on the ODEX, which calculates technical efficiency improvements.Since the beginning of the new century, however, the efficiency improvement measured by the ODEX has slowed down.