Griffith Energy Plant

Griffith Energy Plant

Griffith Energy is a 570-megawatt,  natural gas fueled, combined cycle plant located on a 160 acre tract approximately 100 miles southeast of Las Vegas, Nevada.  The facility was constructed by Black & Veatch/ Zachry and employs two combustion turbine generators in a combined cycle configuration that includes two supplemental fired heat recovery steam generators (“HRSG”), and a single condensing steam turbine generator.  Griffith is a zero discharge facility, employing clarifiers, reverse osmosis filters and two evaporation ponds.  Ancillary equipment includes inlet chillers and HRSG duct firing to boost output, a raw water treatment system, and a closed loop condenser system with an 8-cell mechanical draft cooling tower.

The plant is designed to run as a base or intermediate load generator and is interconnected to the WAPA transmission system, on which Griffith holds firm transmission rights to move power to the Mead trading hub.  Griffith’s capacity and associated output are committed during the summer months under an existing power purchase agreement through September 2017.

Griffith Energy Power Plant Information

Location Kingman, Arizona; Mohave County
Net Capacity 570 MW
Star West Ownership 100%
Commercial Operation Date January 2002
Plant Configuration and Technology 2 GE 7FA+e combustion turbines
2 NEM heat recovery steam generators
1 Toshiba steam turbine generator
Fuel Natural Gas
Gas Interconnection El Paso Natural Gas and Transwestern Gas Pipeline via UniSource lateral
Electrical Interconnection Western Area Power Administartion (“WAPA”) system via Peacock and McConnico substations @ 230 kV;
Firm Transmission for 595 MW to the Mead hub
Regional Pricing Point Mead pricing hub
Power Purchasers NV Energy (Summer months through September 2017)
Plant is available for merchant deliveries during the months of October – May


Griffin Energy Plant Location With Respect to Mead Hub

Griffith Energy Plant Location