Researchers in the University of Arizona’s Compressed Air Energy Storage or CAES program are studying ways to store renewable energy in the form of compressed air. They are looking at various options, from tanks similar to ones you see above ground storing propane and gasoline, to underground cavities mined from salt. For the latter, they are investigating geophysics techniques for identifying porous rock formations and salt deposits. They are also looking at building scale storage using load bearing members, including deep foundations like drilled shafts. [Source: UANews.org via Arizona Geology Blog. Image: UA News]
