Compressed air energy storage
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Compressed Air Energy Storage (CAES) refers to the compression of air during periods of low energy demand, for use in meeting periods of higher demand. Typically, compression is done with an electrically powered turbo-compressor; and expansion is done with a natural-gas powered 'expander' (heater) which drives a combustion turbine.[1]
Installations exist in Huntorf, Germany, and McIntosh, Alabama (USA).[1] An additional facility is under development in Norton, Ohio. This 2700 MW Norton project has been started in 2001, but in early 2006 construction had not actually begun.[2] Air is stored underground in a cavern created by solution mining (salt is dissolved away) or an abandoned mine. Plants are designed to operate on a daily cycle, charging at night and discharging during the day.
[edit] References
- ^ a b Distributed Energy Program: Compressed Air Energy Storage. United States Department of Energy. Retrieved on 2006-08-27.
- ^ Staff investigation report and recommendation. Electric Power Generating Facility in Norton (2006-08-03). Retrieved on 2006-08-27.
[edit] See also
[edit] External links
- MSNBC article, Cities to Store Wind Power for Later Use, January 4, 2006