Biomethane (IMAGE) Helmholtz Centre for Environmental Research - UFZ Caption According to the report around 280 biogas upgrading plants in different countries with a production capacity of around 100,000 Nm³/h of biomethane are already in operation. Credit DBFZ Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.