Operation of biogas-solar-diesel hybrid renewable energy system with minimum reserved energy

There are methods of supplying the required energy to load while reducing cost relatively, but do not take into account amount reserved energy; this is preferred if batteries used store excess produced. The proposed method a mathematical model calculate system size for in an area far from electrical grid where there huge sources biomass and high rates solar radiation. includes three generate energy, biogas addition diesel generator specific without batteries. provides solution that achieves optimized design minimizing taking cost. assumes supplied first generator, when gets higher, introduced, works only exceeds capacity renewable sources. This scenario depends on increasing contribution resources compared fossil fuel.