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Grid Standards and Codes

NREL provides leadership and technical expertise in the development of standards and codes to improve the integration, interconnection, and interoperability of electric load and generation technologies.

An NREL researcher presents on an electrolyzer grid integration demonstration in the control room of the Energy Systems Integration Facility.

In its standards and codes initiatives, NREL works with a range of partners, including laboratories and government agencies; electric utilities; standards development organizations; industry collaborations and organizations; universities; private companies; and state, local, and tribal governments.


To support technical analysis and studies, NREL develops modeling and simulations to describe the problems under study. Using capabilities and resources at NREL laboratories, the standards and codes team excels at developing rapid simulations that take advantage of advanced concepts such as hardware-in-the-loop testing. Such methods of testing actual equipment coupled with computer simulation provide added assurance and validation of methods and solutions.


Sharp increases in photovoltaics (PV) adoption have given a sense of urgency to the standards development process. By providing leadership and direction for the full revision of interconnection standard IEEE 1547—as well as the two standards currently under revision, IEEE 1547.1 and UL 1741—the Accelerating Systems Integration Standards team is addressing this urgency. The goal of this work is to accelerate the development of interconnection and interoperability requirements in order to take advantage of new and emerging distributed energy resource technologies, such as grid-supportive inverters and energy storage. New conformance test procedures in UL 1741SA and IEEE 1547.1 are being validated at NREL's Energy System Integration Facility.

Progress toward an advanced and interoperable grid requires new relationships and interactions among distributed energy resources and with the power system. Immature levels of interoperability impose costs, reduce efficiency, and can prevent devices from working together at all. In this project, NREL is collaborating with three other national laboratories to establish a strategic vision of grid interoperability and provide guidance for implementation. This includes working with industry to articulate general interoperability requirements along with methodology and tools that support the information and communications technology application of distributed energy resource integration.

The electricity grid is vital to our security, economy, and way of life and provides the foundation for essential services that Americans rely on every day. This project is a collaboration among NREL and six other national laboratories with the goal to develop and validate interconnection and interoperability standards for electrical generation, storage, and loads that ensure cross-technology compatibility, encourage harmonization of jurisdictional requirements, and enable high deployment levels without compromising grid reliably, safety, or security.

The goal of this project is to develop streamlined and accurate methods for New York utilities to determine interconnection requirements for PV installations. The project requires collaboration with the New York Department of Public Service, New York State Energy Research and Development Authority, New York Power Authority, and New York investor-owned utilities and provides technical expertise, research, and testing methods to address grid-integration issues in New York State. Methods include providing analysis for resolving interconnection issues, developing fast screens, and identifying solutions following the paths of states such as California, Hawaii, and Massachusetts.


IEEE Std 1547-2018 (Revision of IEEE Std 1547-2003) - IEEE Standard for Interconnection and Interoperability of Distributed Energy Resources with Associated Electric Power Systems Interfaces, IEEE (2018)

Prevention of Unintentional Islands in Power Systems with Distributed Resources, NREL Presentation (2016)

IEEE 1547 and 2030 Standards for Distributed Energy Resources Interconnection and Interoperability with the Electricity Grid, NREL Technical Report (2014)

IEEE 1547 Standards Advancing Grid Modernization, IEEE 42nd Photovoltaic Specialist Conference (2015)


Dave Narang

Principal Engineer | 303-384-6914