IEC 61970 is a standard to facilitate the integration of electrical energy management system. This paper mainly discusses the method of using extensible markup language (XML) Web Services

which is recommended by IEC 61970

to implement the component interface specification (CIS) in IEC 61970. The CIS interface is only defined by object management group (OMG) interface definition language (IDL) now. This paper uses Web Services Description Language (WSDL) to define CIS based on IDL CIS

and implements XML Web Services CIS Server on .NET platform. The XML Web Services CIS Server is built based on common object request broker architecture (CORBA) CIS Server

thus the integration of CORBA and Web Services is realized. Then a function and performance test is made to get the performance of XML Web Services CIS Server.