Austria-based Andritz (www.andritz.com), a leading supplier of electromechanical equipment for hydropower plants, has won a contract to supply two pump-turbines for what will be the world’s largest pumped-storage power plant when it is completed in 2021.

The 3,600MW Fengning plant, being developed by State Grid Xinyuan Co in Hebei Province in China, will be equipped with 12 x 300MW pump-turbine units, which will be housed in an underground cavern.

Andritz says the contract, valued at $83.4 million, includes two pump-turbine motor-generator units with variable speed (and a nominal capacity of 330MVA in generator mode and 354MVA in pump mode), plus other systems.

Andritz says this is the first order to be awarded world-wide for supply of variable-speed pump-turbine units to China.

The State Grid Corporation of China says that construction of the power station, which began in May 2013 and is taking place in two phases, is scheduled for completion in 2021, at a total cost of $1.87 billion.

The annual output of the plant is expected to be 3.424TWh.