NERC System Operator (SOS) Practice Exam 2025 – Complete All-in-One Guide for Exam Success!

A System Restoration Plan is critical for ensuring that a power system can be restored after a disturbance, such as a blackout or system failure. The requirement to review the plan on an annual basis is established to ensure that it remains current and effective in addressing evolving operational challenges, regulatory requirements, and technological advancements. This annual review allows system operators to assess and refine the plan based on lessons learned from drills, real-life events, and changes in system configuration or personnel. Keeping the plan up-to-date is vital for enhancing recovery efforts and minimizing downtime during restoration scenarios.

Other review frequencies, such as monthly, quarterly, or bi-annually, may not provide the necessary regularity for effective updates, while too frequent reviews could lead to unnecessary resource allocation without significant benefit in most situations. The choice of an annual review strikes a balance between maintaining the plan's relevance and managing the resources involved in its upkeep.