This American National Standard, NSF/ANSI 457 Sustainability Leadership Standard for Photovoltaic Modules and Photovoltaic Inverters has been developed as part of the ongoing efforts of a number of interested parties to document and improve the sustainability performance profile of. . This American National Standard, NSF/ANSI 457 Sustainability Leadership Standard for Photovoltaic Modules and Photovoltaic Inverters has been developed as part of the ongoing efforts of a number of interested parties to document and improve the sustainability performance profile of. . NFPA is keeping pace with the surge in energy storage and solar technology by undertaking initiatives including training, standards development, and research so that various stakeholders can safely embrace renewable energy sources and respond if potential new hazards arise. NFPA Standards that. . The safe and reliable installation of photovoltaic (PV) solar energy systems and their integration with the nation's electric grid requires timely development of the foundational codes and standards governing solar deployment. Technological advances, new business opportunities, and legislative and. . The National Electric Code (NEC), published by the National Fire Protection Association (NFPA) and officially designated as NFPA 70, sets the standards for electrical safety and performance and provides a comprehensive framework that photovoltaic and other renewable energy projects must follow. The. . This work was funded by the United States (U. ) Department of Energy, Office of Electricity, through the Energy Storage Program under the direction of Dr. National Renewable Energy Laboratory, Sandia National Laboratory, SunSpec Alliance, and the SunShot National Laboratory Multiyear Partnership (SuNLaMP) PV O&M Best Practices. .