The primary benefits of implementing a CAES system are ancillary services provided to the grid. Applications include: peak shaving; spinning reserve; VAR support; and arbitrage3. By utilizing CAES, the energy from a variety of sources (including wind, solar and the grid itself) can be temporarily stored to be recovered at a later time, presumably when it is more needed and, perhaps, more valuable. The advantages of CAES are particularly compelling when coupled with an intermittent source such as wind energy. The proposed wind park in Iowa will result in a wind farm which could conceivably be used by utilities to supplement base loads or in meeting hourly load variations and peaks.