Clark County Nevada Gets Second 500 Megawatt Dry Cooled Power Plant in 2004

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Researched by Industrialinfo.com (Industrial Information Resources, Incorporated; Houston, Texas). GenWest LLC, a subsidiary of unregulated Pinnacle West Energy, a subsidiary of Pinnacle West Capital Corporation (NYSE: PNW) (Phoenix, Arizona) and Southern Nevada Water Authority (Las Vegas, Nevada) just announced the commercialization of their (75%/25%) joint venture Silverhawk power plant. Silverhawk is a combined-cycle natural gas-fired 570-megawatt (MW) Power Station (Plant 1056671, PEC 48000180) located in North Las Vegas, Clark County, Nevada.

In the same area, Reliant Energy Incorporated (NYSE: RRI) (Houston, Texas) began commercialization of their 591 MW natural gas-fired combined-cycle Bighorn Power Generation Complex (Plant 1053526, PEC 48000153) in February 2004 near Primm, Clark County, Nevada. Both Silverhawk and Bighorn plants utilized the new dry-cooled systems to reduce water usage normally needed for power plants by 90% to 95%.

Silverhawk was constructed by Lockwood Greene (Spartanburg, South Carolina), a wholly owned subsidiary of employee owned CH2M Hill Incorporated (Englewood, Colorado).

Silverhawk has two Siemens-Westinghouse W501F combustion turbine/generator (CT) sets each with an Alstom Power heat recovery steam generator (HRSG) plus one General Electric (GE) D-11 air cooled condensing steam turbine/generator set (ST). Bighorn was engineered and constructed by a group that consisted of Sargent and Lundy (Chicago, Illinois) for engineering, Sachs Electric (Saint Louis, Missouri) for electrical and controls, Graycor Industrial Constructors, Incorporated (Chicago, Illinois) for civil/mechanical plus Murphy Constructors (Saint Louis, Missouri) piping/mechanical. Bighorn has two Siemens-Westinghouse W501FD2 CT sets each with an Alstom Power HRSG plus one Siemens-Westinghouse air-cooled condensing ST. Both plants utilize selective catalytic reduction (SCR) technology to reduce nitrogen oxides (NOx) emissions.

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