With the development of middleware technology and electricity application system, many middleware technologies have been applied to the research of EAS. This paper firstly discusses the application of middleware on energy measurement system(EMS), and a new method for CORBA/Web services integration is investigated on analyses of CORBA and Web Services. On this basis, the paper designs and implements a new middleware, to solve the problem of information sharing between eterogeneous EMS. Through practical application, the middleware can excellently improve the sharing of information of distributed EMS and company operational efficiency.