Dubai Electricity & Water Authority (Dewa) has invited consultants to submit proposals for a contract to design and oversee the construction of a 30 million imperial gallons a day (MIGD) water reservoir in Hatta.

Firms have until 24 June to submit proposals for the consultancy deal.

Dewa is moving ahead with plans for a number of projects in the Hatta area, including a 250MW pumped-storage hydroelectric project.

MEED reported in November that contractors had been invited to prequalify for the engineering, procurement and construction (EPC) contract for the GCC’s first pumped-storage hydroelectric scheme. According to sources close to the project, as many as 10 groups are believed to have submitted prequalification entries.

The hydro project will use water stored in the Hatta Dam near the Oman border. The existing Hatta Dam can store up to 1,716 million gallons of water. The project will involve the construction of an upper reservoir capable of holding up to 880 million gallons. The upper reservoir will be located 300 metres above the dam level.

During off-peak hours, turbines will use solar energy to pump water from the dam to the upper reservoir.