Jinyun Pumped Storage Tender

Location Jinyun County Zhejiang Province ChinaThe Jinyun hydropower project is a 1.8GW pumped storage power plant under construction in the Zhejiang province of China.Zhejiang Jinyun Pumped Storage a joint venture of State Grid Xinyuan 70 and State Grid Zhejiang Electric Power 30 is developing the project with an estimated investment of 1.14bn 1.5bn.The Zhejiang Provincial Development and Reform Commission approved the project in June 2017.Construction works were started in August 2020 while the first pump turbine unit is expected to commence operations in 2025. The remaining five units are expected to come online by the end of 2026. At full capacity the Jinyun pumped storage power plant is estimated to consume up to 2.4 terawatt-hours TWh of surplus electricity a year from the grid while operating in pumping mode during low electricity demand and generate up to 1.8TWh of electricity a year by releasing the stored water from the upper reservoir during peak electricity demand. The Jinyun pumped storage hydroelectric power project is located in Dayang and Fangxi in Jinyun county Lishui city Zhejiang province China.The project site lies in the middle-low mountainous area of southern Zhejiang on the south-west side of the Kuocang Mountains.The upper reservoir will be located in the Caotou village in Dayang town while the lower reservoir will be located on the Fangxi River approximately 1.9km upstream of the Fangxi Township. The lower reservoir of the project will be created with the construction of a 92.6m-high reinforced concrete dam with a crest width of 10m. The lower reservoir will have an active storage capacity of 15.3 million cubic meters Mcm.The upper reservoir will be created with the construction of a 59.2m-high reinforced concrete dam 59.2m with a crest length of 214m. It will have a water storage capacity of 12.62Mcm. Jinyun pumped storage power plant make-upThe Jinyun pumped storage hydroelectric power station will comprise an underground powerhouse equipped with six vertical-axis Francis reversible pump turbine units of 300MW capacity each. The turbines will operate at a net water head of 589m.Power evacuationThe electricity generated by the Jinyun pumped storage power station will be evacuated into the grid through two 35km-long 500kV power transmission lines.Contractors involvedThe 14th Bureau of Hydropower Construction was contracted to construct upper and lower reservoirs water delivery system powerhouse and switch station of the Jinyun pumped storage project.Harbin Electric HEC will manufacture and supply six reversible pump turbines and generators for the project.China Northwest Research Institute was contracted in November 2017 to provide construction supervision services while the East China Institute of Technology was engaged to perform surveys water storage level selection and site layout planning for the project.