By using mechanical, relay, and digital intelligent on-off products, precise measurement of electricity consumption, current, voltage, power, and other data for each branch is achieved. Combined with actual customer scenarios, efficient, high-precision, and fine-grained energy consumption analysis is conducted to identify energy consumption peaks; By utilizing the IoT (5G, 4G, NB, etc.) communication methods carried by the product itself, while reporting data, the downstream execution device is analyzed and controlled in a regular or intelligent manner. Combined with cloud based big data AI algorithms, the start and stop of each branch device is effectively controlled, and timed, delayed, periodic, and AI intelligent branch devices are executed to save energy. This achieves data aggregation, analysis with basis, efficient power saving, and helps increase efficiency.