Active Power Inc (ACPW) announced the details behind its latest breakthrough in alternative energy storage. The new technology, based upon the innovative combination of several mature technologies, constitutes a monumental achievement in energy storage by providing the extended runtimes of lead-acid batteries without any of the well-known shortcomings of these cells. This Thermal and Compressed Air Storage (TACAS) technology will be incorporated into Active Power's newest product that will begin shipping as an alpha unit late this year, the CleanSource® XR. [ more ]