The smoke and dust from tunnel blasting in the mountainous areas of southern Jiangxi slowly dissipated, and the first hammer of the underground power plant officially fell, marking the start of the main construction of the Xunwu Pumped Storage Power Station in Jiangxi. As of October 2026, 42 key pumped storage projects in the 14th Five Year Plan have started construction nationwide, with a total installed capacity exceeding 60 gigawatts. The Xunwu project is the latest benchmark project in the southern region to enter the main construction phase.

The main construction phase has officially started in full swing

With the successful completion of the first blasting operation of the underground powerhouse of the project, Jiangxi Xunwu Pumped Storage Power Station has officially entered the main construction stage from the preliminary preparation. Hundreds of builders entered the site simultaneously, and multiple work surfaces such as ventilation and safety tunnels, underground factories, and upper reservoir dam foundations were laid out simultaneously, striving to catch up with the construction progress along the entire line.

As the largest single investment project since the establishment of Xunwu County, the power station has a total investment of 7.967 billion yuan and a total installed capacity of 1.2 million kilowatts. It is planned to achieve grid connected power generation of the first unit by December 2030 and complete the commissioning of all units by September 2031. After completion, the project will become the most important peak shaving and energy storage hub in the southern Jiangxi power grid, significantly filling the flexible regulation gap of the regional power system.

The construction task of the warehouse project has been fully implemented

The upper reservoir project won by the 12th Bureau of Hydropower covers the entire construction chain, including the installation of the upper reservoir body, inlet and outlet, metal structures, water diversion system, on-site roads, building decoration, construction support tunnels, soil and water conservation, and greening. The total excavation volume of the project's earthwork exceeds 5 million cubic meters, and the total filling volume of the dam body is about 2.1989 million cubic meters. The upper reservoir is designed with a concrete face rockfill dam, with a dam crest elevation of 881 meters and a total storage capacity of 14.48 million cubic meters.

The power station is equipped with four single-stage mixed flow reversible water pump turbine units with a single capacity of 300 megawatts. After completion, the annual power generation can reach 1.51 billion kilowatt hours, which can improve the peak shaving capacity of Jiangxi power grid by 3 million kilowatts, save 470000 tons of standard coal annually, and reduce carbon dioxide emissions by more than 65 million tons throughout the life cycle. It provides core support for the construction of a green energy cluster with complementary water, wind, solar and energy storage in the local area. Keywords: New Energy News, Energy Storage News

The foundation of the upper reservoir between the high mountains is gradually taking shape, and the excavation of the water diversion tunnel is steadily advancing. This giant power bank in the mountains of southern Jiangxi is gradually being implemented from the planning drawings as the core hub supporting the operation of the new power system in the region.Editor/Cheng Liting