Commercial complexes, office buildings, hospitals, schools and other public facilities feature diverse power consumption scenarios and large load fluctuations, which impose extremely high requirements on the safety, scalability and easy maintenance of power systems. We build an integrated scalable power solution for commercial and public facilities: Gas insulated ring main units (RMU) and LV/MV/HV switchgears construct a stable backbone power distribution network, enabling rapid fault isolation and redundant switching to ensure uninterrupted commercial operation. Distribution transformers and oil-immersed power transformers efficiently adapt to different load levels, meeting the voltage demands of shopping malls, offices, public services and other scenarios. Low-voltage distribution cabinets can flexibly divide power supply branches according to business layout to realize refined power management. CATV branch boxes also improve weak current supporting facilities to meet the communication needs of modern commercial spaces. Featuring modular design, the complete solution supports later expansion and upgrading, while boasting high protection grade and low noise characteristics, perfectly integrating into the urban commercial environment. It provides safe, efficient and scalable power support for diverse urban applications, ensuring the stable and orderly development of commercial activities and public services.