Electricity is the backbone of modern infrastructure, powering smart cities, solar farms, data centers, and industrial plants. With global electricity demand soaring due to electrification, renewable energy integration, and digital transformation, intelligent Energy Management Systems (EMS) are essential. Advanced solutions like Automatic Power Factor Correction (APFC), reactive power compensation, and digital metering improve power quality, reduce energy losses, and optimize consumption. As industries face challenges such as low power factor, voltage instability, harmonic distortion, and utility penalties, EMS ensures compliance, cost savings, and equipment longevity. Built on three pillars—real-time measurement, dynamic control, and predictive optimization—modern energy management leverages smart devices and digital platforms to deliver efficiency, reliability, and sustainability.