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Dual Power Islands

US$400 million order for H-class power; utilize single-shaft configuration

Posted on December 20, 2013

Siemens Energy has received an order to supply two integrated power islands fitted with H-class gas turbines for the 829 MW Patriot combined-cycle power plant (CCPP) in Pennsylvania, U.S.A.

The Patriot CCPP will fire local shale gas and will comprise two power islands, both designed as single-shaft configurations, meaning that the gas turbine and steam turbine are arranged on one shaft and drive the same generator. Siemens said that the Patriot and its sister power plant, Liberty, will be able to supply up to two million homes with clean power.

The two power islands each consist of one SGT6-8000H gas turbine, one SST6-5000 steam turbine, one hydrogen-cooled SGen6-2000H generator, and one heat recovery steam generator, along with the complete electrical system and SPPA-T3000 instrumentation and control system.

The complete power plant is to be erected by Gemma-Lane Patriot Partners, the U.S.-based engineering, procurement and construction (EPC) contractor. The order volume for Siemens, including a long-term maintenance and service contract, is approximately US$400 million, and commissioning of the plant is scheduled for 2016.