State of the art and best practices collection

One document with all information from the sub WPs mentioned in the work package. The report will collect the state of the art in Italy and Europe of: - the current biogas and biomethane scenario in Italy and assessment of the residual biomass potential; - technical background on biogas and biomethane production and gas grid injection, and best practices; - use of digestate and best practices; - participatory process in energy field and best practices.