The superiority of BEKON technology is already apparent from the wide diversity of suitable substrates. Bulk materials with a high dry-substance content can be digested without need for any complex pretreatment of the fermentation material. The principle is quite simple: in the absence of air and following inoculation by previously fermented material, the biological waste begins to digest, immediately resulting in the production of biogas. The BEKON process is a single-step fermentation process that employs batch operation. ‘Single step’, in this sense means that the various degradation reactions (hydrolysis, acidification and methanisation) constitute one process step.