This document defines a set of UNIFI Specifications for GFM IBRs that provides requirements from both a power system-level as well as functional requirements at the inverter level that are intended to provide means for vendor-agnostic operation of GFM IBRs at any scale in electric. . This document defines a set of UNIFI Specifications for GFM IBRs that provides requirements from both a power system-level as well as functional requirements at the inverter level that are intended to provide means for vendor-agnostic operation of GFM IBRs at any scale in electric. . NLR provides strategic leadership and technical expertise in the development of standards and codes to improve the integration, interconnection, and interoperability of electric generation and storage technologies. Performance standards are critical to building a clean and modern grid—they. . Interconnection standards define how a distributed generation system, such as solar photovoltaics (PVs), can connect to the grid. In some areas of the United States, the interconnection process lacks consistent parameters and procedures for connecting to the grid or is unnecessarily complex. This. . n this broad area are in diferent stages of adoption. At present these standards focus primarily on grid-following (GFL) technologies, and thus their requirements are generally not designed to ensure acceptable pow r system operation with grid-forming (GFM) resources. In some cases, those. . IEEE Standard 1547-2018, titled “IEEE Standard for Interconnection and interoperability of Distributed Energy Resources with Associated Electric Power Systems Interfaces” provides a set of criteria and requirements for the interconnection of distributed generation resources to the electric power. . These devices convert the DC output of solar panels into an AC voltage that can be supplied to grid-connected or off-grid networks. EPC's PCS (power conversion systems) can connect to energy storage systems like Battery Energy Storage System (BESS), fuel cells, and solar power systems. The IBRs include. .