Swedish biogas production is crucial to reach environmental and climate targets and manure represents a great potential, corresponding to ca 2,7 Twh. However, the production from manure-based facilities currently only reaches around ca 64 GWh. Due to the character of manure it is difficult to reach economic feasibility, which limits the establishment of new biogas facilities. Moreover, there is no conclusive “best operational management”, and thus the efficiency of the plants is varying a lot and the full potential is not reached. The proposed project will compile and statistically evaluate data from a comprehensive survey of the majority of presently established manure-based biogas facilities, with the overall aim to find links between management and efficient biogas production, e g high degradation, biogas production and nutrient level in digestates, and low residual gas production. The results will be communicated to the scientific community, advisors, stakeholders and farmers.