IEC 61850 is the most promising standard for design of substation communication and automation systems. Recent revisions of the standard include support for modeling, and control of Distributed Energy Resources (DER). This paper presents an application of the IEC 61850-7-420 data model for DER in the implementation of a control and energy management system for a Hybrid Renewable Energy System (HRES). These systems are beginning to prove their usefulness in providing deployable electrical supply in locations where no such supply exists as well as for backup power or power quality related support functions. The motivation for applying the standard to the design process is twofold; to modularize the design according to an accepted international standard and to design for interoperability with other IEC 61850 enabled devices and SCADA systems