Electrical systems are the backbone of modern infrastructure, and their reliability directly impacts safety, productivity, and operational efficiency. To maintain high standards, organizations must go beyond corrective actions and adopt a structured approach to performance monitoring and continuous improvement. This chapter introduces the principles and practices of monitoring electrical system performance through key metrics, advanced diagnostic tools, and systematic evaluation methods. Learners will explore how performance monitoring provides real‑time insights into system health, identifies emerging risks, and validates the effectiveness of corrective actions. Equally important, the chapter emphasizes the role of continuous improvement frameworks where lessons learned from monitoring are fed back into design, maintenance, and operational strategies. By integrating monitoring with improvement cycles, organizations can achieve long‑term resilience, reduced downtime, enhanced safety compliance, and optimized resource utilization.