* Six international consortiums pre-qualified

* Bids due next month

By Stanley Carvalho

ABU DHABI, Jan 17 (Reuters) - Six international consortiums have been pre-qualified to bid for Abu Dhabi's ninth independent water and power project (IWPP), with the winner expected to be chosen by mid 2013, a senior official of the emirate's utility said on Thursday.

The selected developer will take a 40 percent stake in a special purpose company in which the Abu Dhabi Water & Electricity Authority (Adwea) will hold the rest.

"Next month the bids will be received from the six pre-qualified groups and after evaluation we will select the developer," Adwea general director Abdulla Saif al Nuaimi told Reuters on the sidelines of the World Future Energy Summit in Abu Dhabi.

The selection will be made by July, he said.

The 1,500-megawatt (MW) and 55 million gallon per day Mirfa plant will be located on the Gulf coast 160 km from Abu Dhabi, the capital of the United Arab Emirates.

The six pre-qualified consortiums are led by Japan's Marubeni 8002.T , GDF-Suez GSZ.PA , Singapore's SembCorp

SCIL.SI , Japan's Sumitomo Corporation 8053.T , France's EDF

EDFIGE.UL and Korea's Doosan Heavy Industries 034020.KS .

Abu Dhabi produces more than 9,000 MW of electricity from its eight independent water and power projects, most of which is consumed in Abu Dhabi and about 22 percent exported to the northern emirates, according to latest Adwea statistics.

Demand is forecast to grow at 11.3 percent annually in Abu Dhabi up to 2015.

(Editing by Daniel Fineren and James Jukwey)

((stanley.carvalho@thomsonreuters.com)(+ 9712 6444431)(Reuters Messaging: stanley.carvalho.thomsonreuters.com@reuters.net))

Keywords: EMIRATES UTILITIES/BIDS