DEWA completes engineering studies for the 250MW hydroelectric power station in Hatta. Credit: Dubai Electricity and Water Authority.

Dubai Electricity and Water Authority (DEWA) has concluded the engineering studies for the 250MW hydroelectric power station located in Hatta.

The new hydroelectric plant will generate electricity using water in the Hatta Dam, which is capable of storing up to 1,716 million gallons.

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An upper reservoir to be built 300m above the dam level in the mountain can store up to 880 million gallons.

Water will be pumped from the lower dam to the upper reservoir through turbines that will make use of the clean and cheap solar energy during the off-peak hours.

“In addition to being a low-cost reliable and efficient source of clean energy, hydropower is the most important source for energy storage.”

Turbines operated by the waterfall speed from the upper reservoir will be used to generate electricity and connect it to DEWA’s grid during peak-load hours and when production costs are at the higher end,

The engineering studies are part of the AED58m ($15m) consultancy contract, which was awarded by the authority to France’s EDF Group in June last year.

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The contract covers various aspects such as design, hydro-geological, geological, environmental, geotechnical, and deep excavation studies.

DEWA managing director and CEO Saeed Mohammed Al Tayer said: “As part of the ‘Dubai Clean Energy Strategy 2050’, launched by His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai, we have launched several projects, including the hydroelectric power station, at a cost of AED1.92bn ($522.6m).

“In addition to being a low-cost reliable and efficient source of clean energy, hydropower is the most important source for energy storage. It is estimated that storage hydropower represents 99% of the world’s operational electricity storage.”

Additionally, the study has also covered consultancy on deep-water tunnel designs, the upper reservoir and hydroelectric power station, the tender for material supply, supervision of construction work, site installation, on-site testing and commissioning.

The project will have a lifespan of up to 80 years.