NERC Releases Level 2 Alert Focused on Inverter-Based Resource Performance Issues for Generator Owners

​WASHINGTON, D.C. – Today, NERC issued the Inverter-Based Resource Performance Issues Alert, which is being distributed to Generator Owners (GOs) of Bulk Electric System (BES) solar photovoltaic (PV) generating resources. This alert comes after NERC analyzed multiple large-scale disturbances involving widespread loss of inverter-based resources (IBRs), which resulted in abnormal performance across several BES solar PV generating resources. These resources have exhibited systemic performance issues that could lead to potential widespread outages if they persist. As the penetration of BPS-connected IBRs continues to rapidly increase, it is paramount that any performance deficiencies with existing and future generating resources be addressed in an effective and efficient manner.

As a Level 2 Alert, this document contains recommendations for specific actions that should be taken, and entities registered under the GO function are required to acknowledge receipt and respond to a series of questions. Responses are due by 12:00 a.m. Eastern on June 30, 2023. NERC strongly recommends that registered GOs also adopt the recommendations and supply data for their non-BES solar PV facilities so that NERC can more comprehensively assess potential BPS reliability risks in this area. While entities other than GOs are not required to submit a response, NERC also advises that all registered entities assess the content of the alert for applicability to their operations and incorporate recommendations where possible.

For more information on NERC​s current and future work to mitigate emerging risks associated with IBR performance issues, please view the IBR Activities Quick Reference Guide and the Inverter-Based Resource Strategy. The quick reference guide consolidates the work that the ERO Enterprise has done regarding this topic and is regularly updated by the subject matter experts to reflect new additions. The strategy includes four key focus areas: risk analysis, interconnection process improvements, sharing best practices, and industry education and regulatory enhancements. Each focus area includes specific activities and work items that are described in more detail throughout the strategy document.

The ERO Enterprise remains committed to identifying and working toward solutions to better manage the complex reliability challenges facing industry during this time of unprecedented change. 

Posted On: 03/14/2023