EANS-News

ANDRITZ to supply two pump turbines for the Hatta Pumped Storage Power Plant in Dubai

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Company Information

Graz/Vienna - OCTOBER 3, 2019. International technology group ANDRITZ has signed
a contract - as part of a consortium with the European construction group
STRABAG - with Dubai Electricity and Water Authority (DEWA) to supply and
commission the entire electro- and hydro-mechanical equipment for the Hatta
Pumped Storage Power Plant located in the Hajar Mountains 140 km southeast of
the city of Dubai. Startup is expected for the first quarter of 2024. The
contract value for the electro- and hydro-mechanical equipment is more than 100
million euros.

ANDRITZ will provide the electromechanical equipment for two 125 MW Francis-type
pump turbines with double-fed asynchronous generators and auxiliary systems, all
gates and trashracks, 320 m of penstocks, main inlet valves, main power
transformers, GIS switchyard, and high-voltage cables to connect the new power
plant to the national grid. A detailed model test to guarantee the
characteristics of the turbine will be conducted in ANDRITZ's own test
laboratories.

Hatta will be the first project of its kind on the Arabian Peninsula. The final
concept is based on a shaft-type powerhouse close to the existing hydro
reservoir, capable of providing 250 MW for six hours. Due to the relatively
limited reservoir capacity, the available head will vary significantly between
175 and 125 m during the cycle. To overcome this substantial variation in head
but still keep the units running at a high efficiency level over the complete
cycle, both pump turbine units are equipped with double-fed asynchronous motor-
generators, allowing the units to operate at variable speed.

Dubai has the clear goal to diversify the emirate's energy mix and increase the
share of renewable energy from the current level of 7 to 75% by 2050. To achieve
this ambitious target, DEWA decided not only to increase the share of power
generation from renewable sources, like photovoltaics and wind power, but also
to build the necessary hydro-pumped storage capacity required to balance the
volatility of these renewable energy sources.

ANDRITZ is one of the few global suppliers to have reference projects and
expertise for such specific technologies. Award of this order is a very
important milestone for ANDRITZ and its consortium partners because this