Templated nano structures are being developed as nanotechnology device platforms and include porous membrane structures such as polycarbonate (PC), polyethylene terephthalate (PET), and alumina. Copper wires have been successfully grown inside the pores of these membranes with nano diameter dimensions using an electrodeposition process (1). A device made from this structure, called a digitated energy storage device (DESD) has been built and tested. There is a great amount of interest in building energy storage devices for pulse-power needs. The obvious example is hybrid vehicles where both high-energy stroage and power demands are needed. The cost of using a battery for pulse-power has been a sacrifice in energy density and life-cycle (2). Improvements in energy storage efficiency, via exploitation of nanoscale structures, will provide the high power and long cycle-life not found in batteries. copyright The Electrochemical Society.