China Energy Engineering Corporation Gezhouba Wins Bid for Daofu Pumped Storage Lower Reservoir Project with RMB 2.754 Billion

en.Wedoany.com Reported - On September 22, China Energy Engineering Corporation Gezhouba Group received the notice of award, winning the bid for the lower reservoir project of the Daofu Pumped Storage Power Station in Sichuan, with a bid amount of approximately RMB 2.754 billion. The scope of this project includes the lower reservoir dam, spillway and emptying tunnel, Sangqike Gully and Panlong Gully sand retention dams, sand flushing tunnels, maintenance water supply pipes and construction adits, as well as reservoir expansion excavation, reservoir perimeter slope treatment, dangerous rock mass treatment, and debris flow treatment within the reservoir area.

The Daofu Pumped Storage Power Station is located in Seka Township and Yazhuo Town, Daofu County, Garze Prefecture, Sichuan Province, with a total installed capacity of 2.1 million kilowatts, equipped with 6 reversible hydroelectric generating units each with a unit capacity of 350,000 kilowatts. The project hub consists of an upper reservoir, a lower reservoir, a water conveyance system, an underground powerhouse, and a switch station. The tenderee is Yalong River Hydropower Development Co., Ltd., the project owner and contract employer is its wholly-owned subsidiary Yalong River Hydropower Garze Co., Ltd., and the on-site management agency is the Daofu Pumped Storage Construction Management Bureau.

The project was approved in November 2023, with an approved total investment of RMB 15.111 billion, and officially commenced construction in January 2024. The upper reservoir of the project site is at an altitude of approximately 4,300 meters, with a maximum water head of 760.7 meters. The maximum dam heights of the concrete face rockfill dams of the upper and lower reservoirs are 86.4 meters and 96 meters respectively. The normal storage level of the lower reservoir is 3,542 meters, with a regulating storage capacity of 7.83 million cubic meters. Upon completion, the project will be connected to the Sichuan main grid at a voltage level of 500 kilovolts.

The project is a key implementation project during the "14th Five-Year Plan" period under the national "Medium- and Long-Term Development Plan for Pumped Storage (2021–2035)," and is also a planned project of the Yalong River Basin hydro-wind-solar integrated base. SDIC Group disclosed that the Daofu Pumped Storage Power Station is the world's highest-altitude large-scale pumped storage power station; PowerChina disclosed that its maximum water head of 760.7 meters makes it China's second-highest operating water head pumped storage power station. The project is designed to generate approximately 2.994 billion kilowatt-hours annually, primarily undertaking operational tasks such as peak shaving, valley filling, energy storage, frequency regulation, and phase regulation for the Sichuan power system.