Coolidge Generating Station, Phoenix, Arizona
One of the Largest Power Plants in U.S.
Capable of Rapid 10-Minute Startups
The Salt River Project (SRP) is a publicly owned
utility supplying water and power primarily to
the greater Phoenix, Arizona area. To meet
demand during the extremely hot summer
months, the project required the green field
erection of a nominal 575 MW peaking plant
for exporting power exclusively to the Salt River
Project. The simple-cycle peaking power plant
at the Coolidge Generating Station uses 12 of
GE’s LM6000PC SPRINT NXGEN combustion
turbine-generators with evaporative cooling
power augmentation to supply electricity to
500,000
homes. At the push of a button during
peak demand, all 12 natural gas-fired turbines
can start up in just 10 minutes—making this
one of the largest plants in the U.S. capable of
such rapid startups. With average ambient
temperatures exceeding 100°F, the plant can
continue to operate at temperatures as high as
122
°F or as low as 15°F.
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