Renewable energy based hybrid energy system have been considered as an efficient mechanism to generate electrical power. The basic idea of hybridizing the energy sources is that the base load is to be supplied by principal energy source and the peak load supplied by other irregular sources. The Bangladesh Government decided to provide electricity throughout the country by 2021. According to government policy the BREB (Bangladesh Rural Electrification Board ) is work for ensuring electricity in the rural area of Bangladesh. But in some rural forest area like kaliakair upazilla in gazipur district it is very difficult to provide electrification all the time during the month of April to September because of heavy rainfall and storm. The purpose of this study is to suggest the optimal hybrid energy system for generation of electricity from a combination of energy sources to fulfill the energy demands of the Kaliakair Upazilla in Gazipur District of Bangladesh. The design of hybrid energy system based on PV system, CAES and grid are considered in this study. The study area is the vannara, Kaliakair Upazilla in Gazipur District of Bangladesh.. The study is based on simulation and optimization of renewable energy system using Hybrid Optimization Model for Electric Renewable (HOMER). The hybrid model has been designed to provide optimized system configuration based on hybrid energy component costs, technical specifications and energy demand. The proposed hybrid energy system is environmental friendly which mitigates the CO2 emission and other greenhouse gas emissions.

Energy is one of the essential requirements to alleviate poverty and socioeconomic advancement. Most of the rural area is not under the national grid; therefore, electrification in rural area is the crying need of Bangladesh. Government of the People's Republic of Bangladesh has issued its vision to bring the entire country under electricity service by the year 2030. The reserve of fossil fuel is diminishing; also the price of fuel is increasing throughout the world. Environmental pollution is another important issue. Green energy is current demand for the existence of future world. For that reason, reducing carbon emission and meeting energy demands are the main topologies to plan energy systems. As Bangladesh is an agricultural based country, biomass resources are available here and there is also good prospect of solar energy. Now-a-days CAES (Compressed Air Energy Storage) is another potential resource in the world. In this paper, a solar-biomass-CAES hybrid system is proposed for electrification of rural area in Bangladesh.