BB 63413 PLATHEE (or Plathée in French) is a hybrid locomotive that was used for testing on the French rail operator SNCF. PLATHEE is an acronym for “Platform for Energy- Efficient and Environmentally Friendly Hybrid Trains”.
The locomotive uses a downsized diesel engine and a 50 kW HELION fuel cell to provide power. Running tests were done with the fuel cell in September 2009 but it was removed in October 2009 and later running tests were made without it. The project was financed by the French Government through the Environment and Energy Management Agency and several industrial partners.