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From Simple To Combined-Cycle

Posted on March 28, 2012

GE has received a nearly US$200 million contract to supply steam turbine technology, power generation services and distributed control systems for the conversion of Saudi Electricity Co.’s (SEC) PP10 power plant from simple to combined-cycle operation. The project will add 1300 MW to the plant’s capacity to support the growing power requirements of Saudi Arabia’s central region and help the area meet summer peak demands, GE said.

“The conversion to combined-cycle operation is part of our growth plan to add an average of 4000 MW of power each year, with a vision of doubling the grid capacity by the year 2020,” said Eng. Ali Saleh Al Barrak, president and CEO for SEC. “In addition to increasing plant capacity by more than 50%, from about 2200 to 3500 MW, the conversion will raise overall plant efficiency.”

GE will provide 10 of its SC series steam turbines specifically for the PP10 combined-cycle expansion. GE previously supplied 40 7EA gas turbines for the PP10 site. The combined-cycle conversion enables the plant to increase its output without any increase in fuel, boosting its operating efficiency, according to GE. In addition to the SC series steam turbines, GE will also supply new balance-of-plant mechanical and electrical equipment. An existing simple-cycle Mark Vle integrated control system will be expanded to incorporate the entire combined-cycle plant. GE power generation services will include installation, testing, commissioning and completing the combined-cycle conversion.

Shipment of the GE equipment is scheduled to begin in the first quarter of 2013, with services to start in the second quarter of that year. The first two combined-cycle blocks at PP10 are scheduled to begin commercial operation in the second quarter of 2014, in time to meet summer peak demands, while the full combined-cycle plant will be online by the first quarter of 2015.

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