Dr. Axel Metz received a master of science degree in Applied Physics. He performed his Ph.D. research on crystalline silicon solar cells at the Institute for Solar Energy Research Hamelin/Emmerthal (ISFH). For more than 10 years he was with SCHOTT Solar as director R&D solar cells. Later he served as managing director of h.a.l.m. elektronik GmbH, a worldwide leading supplier of PV tester equipment. Currently he is heading the business area energy storage systems at VDE Renewables GmbH.