  We considered a novel energy storage system based on the compression of air
through pumped water. Differently from CAES on trial, the proposed indirect
compression leaves the opportunity to choose the kind of compression from
adiabatic to isothermal. The energy storage process could be both fast or slow
leading to different configuration and applications. These novel storage system
are modular and could be applied in different scales for different locations
and applications, being very flexible in charge and discharge process. The
system may offer an ideal energy buffer for wind and solar storage with no (or
negligible) environment hazard. The main features of this novel energy storage
system will be showed together with overall energy and power data.
