This research investigates the economic and environmental impact of various suitable biogas conversion technologies and their energy utilization options (electrical and thermal) on cassava pulp treatment. The results showed that the anaerobic cover lagoon (ACL), modified cover lagoon (MCL), and anaerobic baffled reactors (ABR) were the most suitable options in terms of the investment cost, which was the major factor influencing the selection of biogas technology. The ACL and MCL technologies had the highest values of NPV, a high IRR and a short payback period regardless of the energy utilization options due to their low investment and operating costs.