There are reasons that we put so much emphasis on the realistic calculations of economic profitability before we truly take on a project. One should always be kept in mind: a biogas plant is not the same as a wind turbine or a solar collector. 
 
 The deciding factor as to whether a biogas system is a success is the biology. The profitability is tightly coupled with the stability and effectiveness of fermentation process, independent of what substrate is used.
  
 Our process biology specialized team advises the system operators of over 600 systems. Because the basis of the biological process is the same, we also test numerous systems that were not built by us.