An innovative energy harvesting and storage technology developed by the University of Wisconsin–Madison (UniWM) mechanical engineers could reduce reliance on the batteries in mobile devices. Tom Krupenkin, a professor of mechanical engineering at UW–Madison, and J. Ashley Taylor, a senior scientist in UW–Madison’s Mechanical Engineering Department, created an energy-harvesting technology that’s particularly well suited for capturing the energy of human motion to power mobile electronic devices. The technology could enable a footwear-embedded energy harvester that captures energy produced by humans during walking and stores it for later use. Power-generating shoes could be especially useful for the military, as soldiers currently carry heavy batteries to power their radios, GPS units and night-vision goggles in the field. The advance could provide a source of power to people in remote areas and developing countries that lack adequate electrical power grids.