1.High efficiency
2.Clean. Carbon free when using H2 and O2.
3.Can use renewable fuels
4.Do not need recharging
5.Can run continuously (as long as fuel is available)
6.Provides base load power (good complement to renewables)
7.No moving parts
8.Fuel can be made from water which is abundant or many other things
9.Highly scalable–cell phones to power plants.
10.Can be run in reverse for energy storage, producing hydrogen from electricity and water