Adiabatic compressed air energy storage for the grid integration of wind power
An increasing share of electricity from renewable sources is the stated aim of national and European energy policies. However, a grid compatible integration of this fluctuating energy production to the European electricity systems is expected to be an issue in the mid term in particular in coast regions close to offshore wind farms. Large scale storage technologies can substantially mitigate the expected shortages of balancing and transport capacities. The concept of Adiabatic Compressed Air Energy Storage is a promising candidate, representing a locally emission free, pure storage technology with a high storage efficiency and a high application potential in Europe. This paper outlines the technology and reports on several areas of its development in the European "AA CAES" Project. Intermediate results indicate the technical feasibility of the concept and good prospects for its economical viability.