US Department of Energy I2X program In 2023, Enphase submitted a proposal to the U.S. Department of Energy (DOE) to study the impact of PCS on utility service transformers. The project was selected for funding and assigned to Paci昀椀c Northwest National Labs (PNNL) which will conduct the research. Enphase worked with several utilities to de昀椀ne the goals and objectives of the project and is supplying PNNL with high resolution performance data for actual systems operating in the 昀椀eld. International Code Council We work alongside other clean energy stakeholders, in collaboration with the International Code Council (ICC) to develop changes to the International Fire Code (IFC) and the International Residential Code (IRC) to develop practical solutions. The group actively participates in the code-making process to recommend solutions for future versions of the Code. The IFC has gained increased importance, especially in California, as energy storage systems are beginning to be installed at scale. International Electrotechnical Commission (IEC) The IEC is a global, not-for-pro昀椀t membership organization, whose work underpins quality infrastructure and international trade in electrical and electronic goods. We work with the IEC to support the writing of international codes and standards. Speci昀椀cally, our team is actively engaged as members of the IEC Technical Committee 82, which is scoped to look at solar PV energy systems. Within this committee, we are actively involved with Working Groups 3 (balance of system components) and 6 (inverter safety). We have also participated in working groups to develop the following IEC standards: • IEC 63027 (DC arc fault) • IEC 62109-1 (Inverter safety) • IEC 62109-3 (AC module safety) • IEC 62548 (PV array design requirements) 68