DER Commissioning for IEEE 1547-2018 Conformity Assessment: Progress, Practices, and Challenges

This paper reviews the current state of distributed energy resource (DER) commissioning practices from U.S. utilities, focusing on the implementation of IEEE 1547-2018 DER interconnection requirements. The paper also reviews the standard requirements for DER conformity assessment, describes typical utility interconnection processes, and summarizes existing commissioning practices. Key challenges and gaps in current practices are identified including EPRI’s perspective on needed improvements. The findings highlight the need for standardized approaches to DER commissioning and field testing as utilities continue to integrate increasing amounts of inverter-based resources into the power grid.