Different feasibility studies have been prepared for our customers. The feasibility studies handle different subjects and market sectors. Production of renewable natural gas from biogas instead of producing electricity is one of the important subjects for German operators of anaerobic digestion plants under the requirements of the revised renewable energy law. Another subject is the utilization of biochemical additives in anaerobic digestion plants to minimize the losses of biodegradable organic material during the processing of kitchen waste. The feasibility studies provide the necessary technical and economical impacts and advices for investment decisions to the customers