Hitachi ABB to support 250-MW Hatta pumped storage station in UAE

Austrian technology company ANDRITZ Hydro has selected Hitachi ABB Power Grids to supply technology for grid connection and stabilization for the 250-MW Hatta pumped storage hydroelectric power plant under construction in the Hajar Mountains, UAE.

The Hatta pumped-storage power station is a first-of-its-kind project in the UAE and the Arabian Gulf region. It is being developed by the Dubai Electricity & Water Authority (DEWA) and will be commissioned in early 2024. This project will diversify the energy mix and support the economic, social and environmental development of Hatta. It will also achieve the goals of Dubai Clean Energy 2050 to provide 75% of Dubai’s total power output from clean energy by 2050.

Hitachi ABB Power Grids will deliver two AC excitation systems, based on power electronic converters. The systems will ensure variable speed operations of the reversible rotating units. Hitachi ABB Power Grids will also supply an integrated solution to connect the plant to DEWA’s 132-kV network.

The pumped-storage hydroelectric power station comprises a lower reservoir near Hatta (Al Hattawi) Dam with 1,716 million gallons of water capacity and an upper reservoir built into the mountain about 300 m higher with up to 880 million gallons of water storage capacity. During off-peak hours, turbines will pump water about 4 km from the lower to the upper reservoir, using power drawn from the Mohammed bin Rashid Al Maktoum solar park.

The technology provided to ANDRITZ Hydro uses a PCS8000 converter for the AC excitation, enabling the machine to run at variable speed. This ensures optimal operational efficiency and variable power operation in pump mode without compromising transient behavior of the machine, according to a press release.

“This unique undertaking to generate electrical energy using pumped storage power technology in the desert has a signal effect for the future of clean energy in the generation mix. It’s a flagship project not only in the Arabian Peninsula, but for every hot and dry region of the world,” ANDRITZ Hydro said in a statement.

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