An Energy Analyzer is a smart electrical measuring device that helps monitor and analyze how electricity is being used in a system. It tracks important values such as voltage, current, power factor, frequency, and total energy consumption over time. In Bangladesh, this device is widely used in industries, commercial buildings, and power systems to manage electricity more efficiently. It shows where energy is being wasted and helps users take action to reduce unnecessary usage. By providing real-time and recorded data, it makes energy management easier and more accurate. Overall, it is an important tool for improving electrical efficiency and system performance.