This document, Release 2.0 of the NIST Framework and Roadmap for Smart Grid Interoperability Standards, details progress made in Phases II and III of NIST‘s three-phase plan since the establishment of the Smart Grid Interoperability Panel (SGIP) in November 2009. Major deliverables have been produced in the areas of Smart Grid architecture, cybersecurity, and testing and certification. The lists of standards have been updated and expanded. The first group of Smart Grid standards to emerge from the SGIP Priority Action Plans (PAPs), filling gaps identified in Release 1.0, were added to the list of identified Smart Grid standards. The listed standards have undergone an extensive vetting process and are expected to stand the ―test of time‖ as useful building blocks for firms producing devices and software for the Smart Grid. Among the stakeholder groups who may find this Release 2.0 document most useful are the following: Utilities and suppliers concerned with how best to understand and implement the Smart Grid (especially Chapters 3, 4, and 6); Testing laboratories and certification organizations (especially Chapter 7); Academia (especially Section 5.5 and Chapter 8); and Regulators (especially Chapters 1, 4, and 6).