When ammonia plants first came online in the 1940s, most used water as their source of hydrogen; energy -
intensive electrolysis decoupled the hydrogen and oxygen.
Using electricity from the central power grid to run an energy -
intensive electrolysis machine is expensive and inefficient.
Not exact matches
That's before you get into the environmental vagaries of hydrogen production, which tends to be either energy -
intensive itself (when extracted through
electrolysis) or is gathered during the extraction of fossil fuels or natural gas.