Arabian Power Company, which is made up of the UK's International Power, Abu Dhabi Water & Electricity Authority (ADWEA), Tokyo Electric Power Company (Tepco)and Mitsui & Company, also of Japan, is the project company for Umm al-Nar (MEED 25:4:03).

The scope of works on the ACC subcontract includes civil, structural, building and external works and the outfall channel for both the power and desalination elements. The subcontract will take 30 months.

The Umm al-Nar IWPP involves Arabian Power decommissioning the existing 850 MW of generating capacity at the site and installing 1,550 MW of new build to be constructed by Toshiba and based on Frame 9 gas turbines from the US' General Electric Power Systems (GE). In addition, 25 million gallons a day (g/d) of new multi-stage flash (MSF) capacity will be added by Japan's Hitachi Zosen Corporationto the plant's 70 million g/d of recently-installed capacity. The owner's engineer is the UK's Mott MacDonald.

The new build will be completed in 2006. With the bulk of existing capacity not due to be decommissioned until 2008, Umm al-Nar's contracted capacity for a two-year period will be 2,200 MW of power and 143 million g/d of water.