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Siemens H-class Gas Turbine Exceeds Targeted Efficiency

Posted on May 19, 2011

Siemens has achieved a new world record in power plant efficiency with the SGT5-8000H gas turbine at the Irsching 4 plant in Irsching, Germany. With an output of more than 578 MW and a net efficiency level of 60.75%, Siemens has made history in the field of power plant technology, the company said.

The new Siemens gas turbine is designed for 400 MW in simple cycle duty and 600 MW in combined cycle duty. The new H-class plant can react to the demands for additional or reduced output, the company said. Siemens tested a number of corresponding load gradients for this. For example, more than 500 MW can be put online in the space of only 30 minutes and stable load gradients of 35 MW/min can be run.

Siemens invested more than US$714 million (€500 million) in turbine development and in the construction and operation of a prototype plant in Irsching. Upon completion of the trial operation phase that is now underway, E.ON will take over commercial operation of Irsching 4 this summer.

In addition to the combined cycle plant in Irsching 4, Siemens has already sold six of the new gas turbines as 60 Hz versions to a utility in Florida, U.S.A. The first machines for this order are already in production and will be dispatched to the customer in 2012. Siemens also received an order from South Korea to build a further turnkey single-shaft combined cycle power plant featuring the 60 Hz version the new gas turbine. This plant is scheduled to go online in 2013.

For more information: www.siemens.com

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