This presentation will review the concept of interoperability and the IEEE Std 2030-2011, Guide for Smart Grid Interoperability of Energy Technology and Information Technology Operation with the Electric Power System (EPS), and End-Use Applications and Loads. It provides an overview the smart grid interoperability reference model (SGIRM). A smart grid standardization roadmap was developed in 2010 by the IEC that is similar to the framework and roadmap developed by NIST. Standards developing organizations (e.g., IEEE) -using an open and balanced consensus process- are establishing standards for the smart grid, building off of the conceptual reference models produced by NIST. IEEE Std 2030-2011 supports EISA, the NIST framework coordination efforts, IEC interests, and additional smart grid applications. It focuses on a systems-level approach to understanding and guidance for interoperability components of communications, power systems, and information technology platforms. This landmark standard needs to be reinforced for Working Groups and users of standards.