Ocean Thermal Energy Conversion (OTEC) can provide energy to all countries. It can deliver the energy (i) to regions bordered by warm ocean waters via direct electric-power transmission or (ii) to other areas not bordered by warm ocean waters, via an energy-intensive material produced on OTEC plant-ships cruising on the high seas in the tropics. Ammonia is an outstanding choice for an energy-intensive material because it can (a) replace ammonia now made from natural gas to conserve fuel, (b) serve as a synthetic fuel, or (c) provide an easily transported, storable source of hydrogen for fuel cells to generate electric power where needed anywhere in the world. Costs of OTEC ammonia and of electricity delivered directly or via fuel cells are projected to be competitive with costs of electricity from coal or nuclear plants by 1990, if rapid OTEC development is pursued.