The Suez-led consortium submitted an offer of BD13.972 ($37.1) a megawatt hour (MWh) of power.
A group of Saudi Arabia’s Acwa Power Projects and Korea Electric Power Corporation offered a tariff of BD14.725 a MWh.
Technical proposals for the $2bn scheme were opened on 5 June. An award on the project is expected within a week.
The successful bidder will design, finance, construct and commission the plant on a build-own-operate basis.
The project will have a capacity of 1,100-1,250MW of power and 48 million gallons a day of desalinated water (MEED 23:7:08).