1. Compressed Air Energy Storage An Overview of the System and
its Advantages 20/08/2013
2. Overview CAES Operation Compression Generation Advantages of
CAES Advantages of CAES in Salt Caverns Conclusions
20/08/2013Compressed Air Energy Storage Operation & Advantages
2 3. CAES Operation Compression 20/08/2013Compressed Air Energy
Storage Operation & Advantages 3 Source:
http://www.ridgeenergystorage.com/caes_overview.htm 4. CAES
Operation Generation 20/08/2013Compressed Air Energy Storage
Operation & Advantages 4 Source:
http://www.ridgeenergystorage.com/caes_overview.htm 5. Advantages
of CAES Reduces the costs in having no storage at all, thus
reducing wind curtailment. In 2011, wind farms were paid 25million
to not produce electricity due to extortionately high costs set by
the wind farm operators1. This money could be spent on installing
CAES systems and so the turbines would be able to store the energy
produced, thus eliminating costs for shut-down. Reduced emissions
associated with the energy produced by conventional methods.
Storing energy that would otherwise be wasted results in a
reduction in emissions due to needless further production.
20/08/2013Compressed Air Energy Storage Operation & Advantages
5 [1] Source: Daily Mail Wind farms paid 25million NOT to produce
electricity when it is blustery - and YOU pay 6. Advantages of CAES
Quick start-up time. 0%-100% can be achieved in 10 minutes.
50%-100% can be achieved in 15 seconds2. Vast areas in which the
system could be implemented 80% of US territory has geology
suitable for CAES3. There just needs to be a proven technology with
high efficiency that could be applied to the possible sites.
20/08/2013Compressed Air Energy Storage Operation & Advantages
6 [2] Source: Arizona Research Institute for Solar Energy [3]
Source: Boise State University - Overview of Compress Air Energy
Storage 7. Advantages of CAES Shift of cheap off-peak energy to
expensive peak energy. CAES uses excess energy at off-peak times to
compress air. It then generates electricity at times of peak
demand, when electricity prices can be 4 or 5 times as high. It is
this difference in electricity price that generates income for the
cavern operators. 20/08/2013Compressed Air Energy Storage Operation
& Advantages 7 8. Advantages of CAES Using Salt Caverns
Flexibility4 Operate under very high pressure and so can very
quickly accept or deliver large amounts of air and hence can cope
with the intermittency of generation requirements caused by
renewable sources. Cycling Traditional gas caverns can
traditionally only inject in the summer and withdraw in the winter
Base Gas Caverns must be primed with a base pressure of gas, which
is lower in salt caverns than it is with typical caverns, resulting
in a higher proportion of working gas from the cavern.
20/08/2013Compressed Air Energy Storage Operation & Advantages
8 [4] Source: EIA Salt caverns account for 23% of U.S. underground
natural gas storage daily deliverability 9. Conclusions Compressed
Air Energy Storage provides an increasingly important solution to
the problem of grid stability and energy storage. Once one
technology has been proven to work incorporating a high efficiency,
the possibility for installation globally is very realistic and has
huge commercial benefits whilst also preventing grid breakdown.
20/08/2013Compressed Air Energy Storage Operation & Advantages
9 10. Thank you 20/08/2013Compressed Air Energy Storage Operation
& Advantages 10
