Recently, the upper reservoir project of the Guangxi Nanning Pumped Storage Power Station, a major national energy project under the 14th Five-Year Plan, began impounding water, creating conditions for the subsequent water-filled commissioning of the generating units and full commercial operation. The project was constructed with the participation of Sinohydro Bureau 8 Co., Ltd. and supervised by Guiyang Engineering Corporation Limited.

The upper reservoir built by Sinohydro Bureau 8 is located atop Baizao Mountain, with a normal water level of 776 meters and a storage capacity of nearly 6.37 million cubic meters, equivalent to half the capacity of West Lake. The retaining dam is 92 meters high and nearly 500 meters long at its crest; approximately 7.34 million cubic meters of earth and rock were excavated, and it took 600 days of filling to reach the top. With the smooth lowering of a gate measuring 13.4 meters high, 9.2 meters wide and 1.7 meters thick and weighing 129 tons, the 32-month construction task of the upper reservoir was basically completed, marking the project's official entry into a new stage of impoundment.

Since the start of construction, Sinohydro Bureau 8 has integrated intelligent construction and green building practices throughout the project. As a demonstration project for practicing new quality productive forces, the upper reservoir area has built and put into use China's first battery swap station for heavy trucks at a pumped storage site, featuring one lane and five battery bays, equipped with four 300-kilowatt chargers and 20 electric heavy trucks, enabling rapid battery swaps in 3–5 minutes, saving 680,000 liters of fuel annually and reducing carbon dioxide emissions by 1,800 tons accordingly, making the "low-carbon, quiet" mode a reality at the construction site. Based on actual site conditions, the project actively explored new technologies, applying the cloud vehicle platform for the first time in the pumped storage engineering sector in South China, which greatly simplified the construction process, effectively shortened the concrete construction time of the gate shaft, reduced process transitions and personnel input, improved the installation accuracy and quality stability of the gate slots, and boosted construction efficiency by more than 30%.

The Nanning Pumped Storage Power Station is a major project coordinated and advanced by the autonomous region and the first pumped storage power station in Guangxi. The station has a total installed capacity of 1.2 million kilowatts, a total investment of about 8 billion yuan, and an designed annual power generation of 1.6 billion kilowatt-hours. It can save 285,000 tons of standard coal and reduce carbon dioxide emissions by 766,000 tons annually, with environmental benefits equivalent to the carbon sink capacity of 62,500 mu of forest.