Therefore, a case study on Singapore and its neighbours was proposed to illustrate data requirements and workflows, structured around four aims. We first identify key biowaste sources, and characterize them using five criteria: availability, supply stability, underutilization, segregation/purity and derivable key feedstocks. We find that Singapore's neighbours have a significant amount of suitable empty fruit bunch (EFB) biowaste; easy to collect and stable in supply, possible to segregate, at present neither economically utilised nor properly managed from an environmental perspective, and able to yield useful feedstock such as cellulose, lignin and hemicellulose sugars. In the interest of extracting these feedstocks, an ethanol organosolv pretreatment process is then simulated in Aspen Plus using process conditions, parameters and steps from literature. An exergy profile is obtained from stream data which highlights opportunities for process improvement via metrics such as the cumulative exergy demand, exergy efficiency, exergy destruction and exergy loss.