The next generation of vehicles will see many new concepts involving propulsion technologies currently being developed by many of the worlds automakers and suppliers. These concepts will include pure electric vehicles (EV), hybrid electric vehicles (HEV) with advanced internal combustion engines and fuel cell hybrid electric vehicles (FCHEV). These new vehicle concepts all need a high-efficiency electrical energy storage system (EESS). This paper describes the basic requirements for the next-generation vehicle technologies and emphasizes the performance of Ovonic technologies as it relates to vehicle requirements. Ovonic Battery Company (OBC) is developing and commercializing enabling technologies for the energy storage for advanced vehicles. Ovonic technologies enable the performance of advanced vehicles to exceed that of today's conventional vehicles while providing additional benefits of clean-air transportation and greatly reduced fuel consumption. This is achieved through a unique combination of high power (>600 W/kg) and high energy density (>70 Wh/kg). New battery developments in excess of 1000 W/kg in power density will push the envelope even further with flexible packaging and high performance power and energy storage systems.