Introduction  The paper aims to obtain optimal configuration and operation strategy of the distributed energy system which is based on the calculation of the annual typical daily cooling， heating and electric load demand of various buildings.

  Method  The energy station was equipped with a variety of energy-saving and cost saving equipments， such as internal combustion engine， flue gas and hot water lithium bromide unit， centrifugal electric refrigeration （heat pump） unit， ground source heat pump， gas-fired hot water boiler and water storage （heat） tank， which realized the gradient utilization of energy and better match the load demand of the client.

  Result  The results show that it is feasible in technology and economy.

  Conclusion  Reasonable allocation of units in the energy station can save investment， protect environment and save energy. Make use of the difference between peak and valley electricity prices which can reduce operating costs and improve system efficiency.