Abstract: To improve the rationality of energy utilization and power source planning of Hubei Hunan and Jiangxi provinces and increase the operation rate of the corridor along with the Haolebaoji-Ji'an Railway, on the basis of considering the constraint of coal transportation a regional power source optimization model, in which the constraint of coal transportation was considered, was constructed. On the basis of forecasting the supply and demand of the power and coal in the three provinces located in Central China and taking the minimum total cost of the system as the objective function and taking the power supply and demand, the transportation capability of transport corridor, the upper limit of installed capacity as constraints, the impacts of transportation capability of Haolebaoji-Ji'an Railway on total cost of power supply and carbon emission the three provinces were analyzed. Analysis results show that in the near future the transportation capability of Haolebaoji-Ji'an Railway is beneficial to secure regional coal supply, decrease total cost of energy source supply as well as the transportation cost of unit coal, however, in the viewpoint of medium and long term the Haolebaoji-Ji'an Railway will bring about the increase of regional carbon emission, thus from the consideration of carbon neutrality and energy reform, as an exclusive line for coal transport the transport capacity of Haolebaoji-Ji'an Railway will be hard to be adequately released. In the future, the utilization scale of clean energy and extra-high voltage should be further enlarged.