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Powering Oregon, U.S.A., Power Plant

Wärtsilä to supply 12 engines, provide flexible response to variable renewable input levels

Posted on February 5, 2013

Wärtsilä has received an order to supply the generating sets and related auxiliary equipment for a new power plant being built near Clatskanie, Oregon, U.S.A.

The Port Westward Unit 2 plant is being built for the Portland General Electric Co., an investor-owned utility. It will be powered by 12 Wärtsilä 50SG natural gas-fuelled engines with an electrical output of approximately 220 MW, and is scheduled to be fully operational by 2015.

The Wärtsilä 50SG is a four-stroke, spark-ignited gas engine operating on the Otto cycle and incorporating the lean-burn principle. The company said it was designed using the gas technology used in the smaller Wärtsilä 34SG engine, and an important feature is its high power plant net electrical efficiency rating at high ambient temperatures – more than 50% in combined-cycle mode.

Wärtsilä said its 50SG gas engine will allow Portland General Electric to have the operational flexibility to quickly respond to variable input levels of wind and hydro power to the system.