Classification and Identification of Renewable Energy Droughts in the United States

Renewable resource droughts, defined as significantly reduced wind and solar power generation periods, present challenges to power system reliability and stability. This study proposes two strategies and suggests their related metrics to identify and classify renewable resource drought events based on severity and duration. The focus of this study is on identifying wind generation droughts across U.S. states, utilizing over 80 years of ERA-5 weather dataset. The results provide valuable insights for optimizing renewable energy integration and strengthening system resilience to renewable resources variability.