The Arizona Research Institute for Solar Energy (AzRISE) and the Laboratory for Advanced Subsurface Imaging (LASI) at the University of Arizona, together with Southwest Solar Technologies, Inc., are investigating the use of excavated cavities for renewable-energy storage using compressed air. The cavities may be trenched, augered, solution mined, or constructed by other methods. Cavities of opportunity, such as former mines, and excavation of valuable materials in combination with construction of an air-storage cavern, are also of interest. We are searching for suitable excavation technologies as well as low-cost liners that will provide low permeability and structural stability for compressed air at pressures up to 300 psi over long times.
We are interested in hearing from companies that have commercial solutions in this field. We are also interested in developing collaborative efforts with other organizations that have an interest in this technology.