Here is what NIST has to say about their efforts a defining a smart grid via standards: the website is
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Smart Grid Interoperability Standards Project
Under the Energy Independence and Security Act (EISA) of 2007, the National Institute of Standards and Technology (NIST) has "primary responsibility to coordinate development of a framework that includes protocols and model standards for information management to achieve interoperability of smart grid devices and systems…"
As specified in the American Recovery and Reinvestment Act (ARRA), NIST will receive $10 million through the Department of Energy (DOE) to carry out responsibilities assigned under EISA. In addition, NIST is allocating $5 million in ARRA funding for this purpose. The funding supports collaborative efforts to develop a comprehensive framework for a nationwide, interoperable Smart Grid for the U.S. electric power system (as called for in EISA Title XIII, Section 1305).
The Smart Grid will be key to national efforts to further energy independence and curb greenhouse gas emissions, and NIST is carrying out its responsibilities with a sense of urgency. With industry, government, and consumer stakeholders, NIST is expediting identification and development of standards critical to achieving a reliable and robust Smart Grid.
NIST is well-suited for this role. The agency has earned a reputation as an “honest broker”—an impartial, technically knowledgeable third party with a long history of working collaboratively with industry and other government agencies. These partners include DOE and the Federal Energy Regulatory Commission (FERC).
NIST also has provided measurement technology and assistance to utilities, equipment manufacturers, and other power-system stakeholders. It participates in key international standards organizations, and NIST’s measurement and testing expertise is recognized worldwide.
Interoperability—the ability of diverse systems and their components to work together—is vitally important to the performance of the Smart Grid at every level. It enables integration, effective cooperation, and two-way communication among the many interconnected elements of the electric power grid.
Effective interoperability is built on a unifying framework of interfaces, protocols, and the other consensus standards. These standards facilitate useful interactions so that, for example, “smart” appliances and meters will tell consumers how much power they are using and at what cost, providing them with more control over their power consumption and energy bills. Widely adopted standards also will help utilities to mix and manage varying supplies of solar, wind, and other renewable energy sources and better respond to changing demand.
The task is akin to developing standards for the next-generation telecommunications network. This effort has spanned many years, continues to evolve, and involves dozens of standards development organizations. Also, like the telecom network, the Smart Grid is almost entirely owned and operated by industry. Therefore, Smart Grid interoperability and cybersecurity standards must reflect industry consensus, with active participation, and where required, leadership and coordination by government.
NIST brings a diverse combination of skills and expertise to the challenge. Beyond the measurement and testing support it has long provided the electric utility industry, NIST is a recognized expert in advanced networking technology and in the cybersecurity countermeasures needed to detect and mitigate intrusions and network disruptions. In particular, NIST has extensive experience in establishing testing and certification programs in cybersecurity.
NIST also has collaborated with businesses and standards organizations on guidelines and standards to protect industrial supervisory control and data acquisition (SCADA) systems and to secure their interfaces to the power grid. NIST know-how extends to standards and measurements for building control systems and their links to the grid.
The Draft of a document
"NIST Framework and Roadmap for Smart Grid Interoperability Standards Release 1.0" is attached for your review and comment.