Page - 56 - in Our Car as Power Plant

56 The ultimate US target is 90% for the ‘onboard efficiency’ which is delivering hydrogen from the tank to the fuel cell. The target for Well to Fuel Cell efficiency is 60%, which is the efficiency for the total process of hydrogen produc- tion, compressing, storage, fuelling and in-the-car decom- pressing. Next to hydrogen production, compressing and decompressing hydrogen for high pressure storage causes the major loss. Energy-efficient off-board storage of hydrogen is also needed and developed for stationary and portable appli- cations and throughout the hydrogen delivery infrastructure. For example, storage is required at hydrogen production sites, hydrogen refueling stations, and stationary power generation sites. Temporary storage may also be required at terminals and/or intermediate storage locations.