Harry Allen Generating Station

The Harry Allen Generating Station is a 628-megawatt (842,000 hp) natural gas fired combined cycle power plant located in Clark County, Nevada about 30 miles north of Las Vegas. Electricity is generated by two GE Frame 7EA combustion turbines, two GE Frame 7FA+e combustion turbines, and a D11 steam turbine.^{[1][2][3] [4]}

Harry Allen Generating Station
Country	United States
Location	Clark County, near North Las Vegas, Nevada
Coordinates	36°25′48″N 114°54′4″W
Status	Operational
Commission date	1995
Owner	NV Energy
Thermal power station
Primary fuel	Natural gas
Combined cycle?	Yes
Power generation
Units operational	2 X 72 MW 484 MW system
Nameplate capacity	628 MW

History

The initial facility consisting of a single 72mw GE Frame 7EA simple cycle gas turbine was completed in 1995. The station was originally planned to be operated mostly during hotter periods when demand would be the highest. A second similar unit was added in 2006

In 2011, a 484mw combined cycle facility was completed consisting of two GE Frame 7FA+E gas turbines with the exhaust heat from both units captured to produce steam for a GE D11 steam turbine to generate additional electricity ^[1]

Facility

Due to its location in a desert where water is limited, the combined cycle plant utilizes a six-story-high dry cooling system. Operating similar to a massive automotive radiator, thirty-six 36-foot (11 m) diameter fans are used to help cool and condense steam back in to water. The dry cooling system allows the combined cycle facility to operate with just 7% of the water normally used by conventional water cooled plants of similar rating. The facility also utilizes a waste water reclamation system that recaptures and recycles approximately 75 % of the water used in the power generating process ^[1]

Notes

1. "Harry Allen Generating Station" (PDF). NV Energy. August 2011. Retrieved November 14, 2012.
2. "Harry Allen Generating Station" (PDF). COMBINED CYCLE JOURNAL. Retrieved December 10, 2012.^{[permanent dead link]}
3. "Nevada Power Plant Expands Off the Grid". McGraw-Hill Companies. Retrieved December 10, 2012.
4. "SPECIAL REPORT: NV Energy". PSI Media. May 4, 2011. Retrieved December 10, 2012.