Now in Bangladesh almost 80% people have the access of electricity. The electricity consumption percentage is increasing sharply along with the economic development of Bangladesh. This research has shown the effect of energy consumption and population growth on economic development and the effect of GDP growth on energy consumption as well. This research has collected historical data and have done unit root test by Augmented Dicky Fuller model, then used multiple regression analysis to analyze data, and have given some suggestions for future sustainable economic development.