Municipal engineering covers key public infrastructure such as urban road lighting, bridges and tunnels, water supply and drainage systems, and public transportation hubs, which are the core support for the normal operation of cities, and have rigid requirements for the stability, reliability and all-weather operation capability of power supply. We build a highly reliable and adaptable power solution for municipal engineering: Gas insulated ring main units (RMU) and LV/MV/HV switchgears adopt high protection grade design, resisting the erosion of complex outdoor environments and ensuring the long-term stable operation of municipal power distribution nodes. Distribution transformers and oil-immersed power transformers have wide voltage adaptability, which can meet the power supply needs of distributed loads in municipal engineering. Low-voltage distribution cabinets can realize centralized control and time-sharing power supply for municipal equipment such as road lighting, water supply and drainage pumps, and traffic signal systems. With miniaturized and low-noise design, compact substations are perfectly integrated into urban municipal construction scenarios without affecting the overall urban style. With all-weather uninterrupted power supply capability as the core, the complete solution provides stable, safe and reliable power supply for urban public infrastructure, ensuring the efficient operation of urban people’s livelihood security systems and supporting urban construction and development.