FuelCell Energy Inc. awarded US$3.8-million contract by U.S. Navy to develop power system for unmanned underwater vehicle (UUV). FuelCell Energy, Inc., a leading manufacturer of fuel cell power plants, announce a US$3.8-million contract award from the U.S. Navy to develop and test a Hybrid Solid Oxide Fuel Cell (SOFC)-Battery power system for large displacement undersea vehicle propulsion. The objective of the project is to develop a refuelable power system, with high energy density, that is suitable for undertaking long duration underwater missions of unmanned submersibles. The Hybrid SOFC-Battery system will be capable of generating 1,800 kilowatt hours of electricity during a 70 day mission with no exhaust discharged outside of the vehicle at any time.