Gas Turbine and Combined-Cycle
 Plants in the Western USA

Bennett Mountain
Location: ID
Operator: Idaho Power Co
Configuration: 1 X 164 MW W501FD3 gas turbine
Operation: 2005
Fuel: natural gas
T/G supplier: Siemens Westinghouse
EPC: Lauren
Quick facts: The Bennett Mountain power plant was built by local developer Mountain View Power and Siemens-Westinghouse. The unit was turned over to Idaho Power following completion of pre-acceptance testing and went into operation in Feb 2005. It is the first U.S. installation of the 501FD3 machine.

Photograph courtesy of Siemens
Posted 17 Oct 2007

Location: WA
Operator: PacifiCorp Energy
Configuration: 520-MW, 2+1 CCGT with 7001FA gas turbines
Operation: 2003
Fuel: natural gas
HRSG supplier: Doosan
T/G supplier: GE, Alstom
EPC: Parsons
Quick facts: Tractebel first submitted the original site plan for its Port of Chehalis facility in 1994 and the plan was approved by state government in 1997 after numerous hearings conducted by the Energy Facility Site Evaluation Council. Subsequently, the scheme was up-rated and switched to dry cooling. Construction was completed for Tractebel North America in Nov 2003. In Sep 2008, Suez Energy North America completed the sale of the plant to PacifiCorp. Financial terms were not disclosed. All 15 plant employees accepted offers to work for the new owners.

Photograph courtesy of Suez Energy North America
Posted 17 Sep 2008

Currant Creek
Location: UT
Operator: PacifiCorp Energy
Configuration: 525-MW, 2+1 CCGT with 7001FA gas turbines
Operation: 2005-2006
Fuel: natural gas, oil
HRSG supplier: Vogt
T/G supplier: GE, Toshiba
EPC: Stone & Webster
Quick facts: Currant Creek was the first large-scale PacifiCorp project since the early 1980s and cost under $350mn. The gas turbines were released for simple-cycle operation in Jun 2005.  They were taken offline in Sep 2005 to complete and tie-in the steam set and the entire plant was declared in-service in Mar 2006. The HRSGs have duct burners from Foreny Corp and are equipped with SCR and an oxidation catalyst.

Photograph courtesy of Power
Posted 18 Jan 2004


Lake Side
Location: UT
Operator: PacifiCorp Energy
Configuration: 545-MW, 2+1 CCGT with 501F gas turbines
Operation: 2008
Fuel: natural gas, oil
HRSG supplier: ??
T/G supplier: Siemens
EPC: Lauren Engineers & Constructors, Teton Industrial Construction
Quick facts: This project was developed by Summit Power Group for PacifiCorp. The 62ac site was acquired from Geneva Steel Corp and connects to the PacifiCorp 138kV system at the Tri-City and Timp substations. The project can be supplied by both the Questar and the Kern River Pipeline companies. A second block is in development.

Photograph courtesy of Summit Power Group
Posted 29 Oct 2008


Mint Farm
Location: WA
Operator: Wayzata Investment Partners
Configuration: 320-MW, 1+1 CCGT block with 7001FA+e gas turbine
Operation: 2007
Fuel: natural gas
HRSG supplier: FW
T/G supplier: GE, Fuji
EPC: Shaw, J H Kelly
Quick Facts: This plant was originally licensed in 1999 by a joint venture of Avista Corp and Steag. The project was then acquired by Mirant Corp and construction started in Oct 2001 with completion scheduled for Jun 2003. In Aug 2002, contractor Shaw Group was notified by Mirant that construction was being suspended on Mint Farm with completion at approximately 34% and capex of about $169mn. In Oct 2005, Mirant received approval from bankruptcy court to sell Mint Farm to Wayzata Investment Partners, a transaction completed in Dec 2005 for $27mn. Construction re-started in 2006 with commercial operation achieved on 17 Dec 2007.

Photograph courtesy of Combined Cycle Journal
Posted 5 Jul 2008

Location: WA
Operator: Grays Harbor PUD
Configuration: 4 X 11 MW GE10 gas turbines
Operation: 2002
Fuel: natural gas
T/G supplier: GE
Quick facts: Franklin Public Utility District (PUD) and Grays Harbor PUD jointly developed this simple-cycle gas turbine site. Each utility owns two GTs.

Photograph courtesy of Grays Harbor PUD
Posted 16 Feb 2002


Location: ND
Operator: Montana Dakota Utilities
Configuration: 2 X 4 MW 3001BTG gas turbines
Operation: 1953
Fuel: natural gas
T/G supplier: GE
Quick Facts: These are among the last if not the last Frame 3 GE gas turbines in  operation, although they only operated at winter-peaks or in emergency situations. The original auxiliary systems and controls are still in-service as well. The Williston units were built with dual-furel capability but now run on gas only

Photograph courtesy of Combined Cycle Journal
Posted 1 Nov 2008


Abbreviations: GE = General Electric , GT = gas turbine, HRSG = heat recovery steam generator, SCR = selective catalytic reduction,  T/G = turbine generator

Data: industcards, Platts UDI World Electric Power Plants Data Base

Updated 11/01/08