Senate Bill 2565 aims to enhance the resilience of Tennessee's electrical infrastructure against geomagnetically induced currents (GICs) by mandating technical assessments and reporting requirements for covered entities, which include electric utilities and project developers. By January 1, 2027, these entities must conduct a comprehensive evaluation of their covered equipment, specifically power transformers and generator step-up transformers with certain voltage and capacity thresholds. The assessments must follow specific technical standards and identify vulnerabilities related to GIC exposure, including factors such as transformer age and susceptibility to saturation and insulation degradation.

Furthermore, by July 1, 2027, covered entities are required to submit detailed reports to various state authorities, including the general assembly and the governor. These reports must include extensive information about each susceptible transformer, such as specifications, age, and location (with sensitive data redacted for critical energy infrastructure information protocols). The bill emphasizes that operational procedures alone, like load shedding, are insufficient for GIC risk mitigation, and it mandates that CEII data be handled according to established protocols to ensure confidentiality.