Renewable Energy: Biomass Feasibility Study for Chengdu, China Zurich/Switzerland | 07.02.2013 | ADRA The Adventist Development and Relief Agency ADRA Switzerland will prepare a feasibility study for biomass power plants in Chengdu/China, together with Europe's leading biogas expert Dr. Arthur Wellinger, President of the "European Biogas Association", project manager Marcel Wagner, ADRA China and local authorities. The planned study assesses the local situation and opportunities. It delivers both technical expertise and financial ratios for return on investment, which are important for inter