Abstract: The pumping station of the Chaohu City Yangtze River Water Supply Project is located on the outer beach of the Yangtze River embankment in He County, Ma’anshan City, with a total installed capacity of 6,720 kW. Considering equipment layout and flood season protection requirements, a double-caisson configuration is adopted, resulting in severely constrained dimensions for the electrical equipment rooms. In response to these characteristics, this paper elaborates on the selection schemes for main transformers, high-voltage switchgear, frequency converters, and other critical equipment. It also outlines the cable routing plan for the pumping station, providing a reference for future electrical designs of caisson-based pumping stations.