In order to achieve sustainable development, along with implementation of energy management systems in wastewater treatment plants and reduce energy consumption, must try to offset all or part of the energy consumption of sewage treatment facility from potential of wastewater for energy production. Currently, biogas production in anaerobic reactors, microalgae cultivate and microbial fuel cell are known methods of producing energy simultaneous with wastewater treatment. Several parameters involve in the process of producing energy from wastewaters. Therefore, selection of optimal processes, is complex and difficult. First step is recognition of criteria and evaluate their effectiveness. In this research, prioritization and selection of the best option for energy producing method based on technical, economical, management and environmental criteria were done based on AHP method and experts judgment with special emphasis on the countrys infrastructure. Finally, the priorities determined as anaerobic treatment with 0.540, microalgae with 0.330 and microbial fuel cell with 0.130 weight.