In order to reduce the system cost and ensure the full consumption of renewable energy, the optimal allocation method of hybrid renewable energy system in remote areas is proposed. Through the application of a variety of meta-heuristic algorithms, including the pelican optimization algorithm (POA), the optimal configuration of photovoltaic, wind turbine, biogas generator and battery in the microgrid system in remote areas is studied. The results show that the improved POA is superior to other algorithms in achieving the optimization objectives, and is outstanding in resource utilization and cost minimization.