Electricity is needed every where after its invention by Edison. It is called the prime mover of a nation. Bangladesh is a developing country and it is facing huge energy crisis. Modern life and its supporting activities are impossible without proper supply of electricity at a reasonable price. To achieve desirable performance and viability of the sector, there is no alternative to bring down the system loss to an acceptable limit. Two economic growth scenarios (Low Scenario and Reference Scenario) were considered to forecast future energy demands. To ensure the electricity supply to all by 2021, the government is considering an optimum energy supply mix of gas, oil, coal, hydro, wind, nuclear and solar energy. Nuclear power is the only way with which we can solve the power problem permanently. If we remain unable to produce nuclear power, this would create a great trouble for us, because of limited reserve of natural gas and limitation of coal mining. We can''t get rid of single fuel dependency overnight. The analysis should help the concerned authority to make changes their decisions towards the development of Bangladesh.