Dubai Electricity & Water Authority (Dewa) has extended the tender closing date to 25 October for the estimated $1.5bn contract to build the Hassyan sea-water cooling system.

The previous closing date was 13 September.

The turnkey engineering and construction contract involves building a seawater intake and outfall system for the Hassyan power and desalination complex.

It includes onshore and offshore sections of the intake channel as well as intake protection works. The outfall system comprises an outfall chamber and means of transporting the discharge offshore, a boat house and boat-lifting facilities. The contract also includes ancillary works including roads and lighting.

The waterway will serve Dewa power and desalination plants in the Hassyan area, which lies to the southwest of Jebel Ali.

All of Dewa’s existing cogeneration plants are located at Jebel Ali, but space constraints mean that M station, which is being developed there at the moment, will be the last at the site.

Dewa received bids from three groups when the contract was originally tendered last year. The bidders were Geneva-registered Archirodon Construction Services, China Harbour Engineering Company and Belgium’s Jan De Nul (MEED 26:2:09).