Abstract: The capacity matching optimization of various heating and cooling sources,such as the combined cooling,heating and power-heat pump（CCHP-HP）system,is one of the important tasks for planning and designing the integrated energy system.This paper proposes an analytical method which can identify the optimized matching capacity of CCHP-HP system.The method is based on the formulation of net present value（NPV）of unit installed capacity within different scenarios.Combined with the frequency statistics of each load internal,the equivalent full load service hours of CCHP-HP and the corresponding income are acquired under different capacity matching schemes.The optimal scheme of CCHP-HP can be acquired from the comparison of total NPV value.Combined with a case study,the advantages of the proposed method are illustrated and it is convenient for the participants to make appropriate decisions.