Assertion: hydrogen's energy | /r/CapableOf | leave unacceptable value
Facets:
value: around 25% for practical use
type: PURPOSE
Source sentences:
text: The large amount of energy required to isolate hydrogen from natural compounds (water, natural gas, biomass), package the light gas by compression or liquefaction, transfer the energy carrier to the user, plus the energy lost when it is converted to useful electricity with fuel cells, leaves around 25% for practical use — an unacceptable value to run an economy in a sustainable future.