On August 13, the upper reservoir dam of the Hubei Weijiachong Pumped Storage Power Station, constructed by Sinohydro Bureau 12, was successfully filled to the top, marking a major milestone in the project's construction and laying a solid foundation for the station to achieve its goal of water storage and power generation on schedule.

The Weijiachong Pumped Storage Power Station is located in Tuanfeng County, Huanggang City, Hubei Province, and is one of the major implementation projects of Hubei Province's 14th Five-Year Plan. The station consists of structures including the upper reservoir, lower reservoir, and water conveyance and power generation system, with a total installed capacity of 298 MW. The upper reservoir dam is a reinforced concrete face rockfill dam with a maximum dam height of 69.5 meters and a total fill volume of approximately 1.773 million cubic meters. Once completed, the station will undertake tasks such as peak shaving, valley filling, frequency regulation, phase modulation, energy storage, and emergency reserve for the Hubei power grid, and is of great significance for further optimizing the clean energy structure, promoting high-quality development of the old revolutionary base areas, and accelerating the achievement of the "dual carbon" goals.

2025 is a critical year for the construction of the Weijiachong Pumped Storage Power Station, and the filling of the upper reservoir dam is one of the key contract performance milestone targets. Facing multiple challenges such as complex dam foundation treatment, high and steep slope operations, management and control of millions of cubic meters of material sources, and extreme weather, the project team took responsibility and acted proactively, planning in advance and preparing a reservoir expansion excavation scheme, meticulously organizing process tests such as blasting and rolling, continuously optimizing construction parameters, improving construction techniques, and ensuring construction quality, ultimately delivering an excellent result of "zero safety accidents and zero quality accidents."

With the successful completion of the upper reservoir dam filling, the station will fully transition to construction stages such as face slab pouring and reservoir area seepage prevention. Next, the project department will focus on the overall goal of "building a benchmark for small and medium-sized pumped storage projects nationwide," maintain high morale, ensure the high-quality and efficient advancement of subsequent works, and contribute PowerChina's wisdom and strength to the construction of pumped storage power stations.