Battery EV is 3.3 times more efficient comparing with hydrogen fuel cell vehicle and 5.6 times more efficient than conventional internal combustion vehicles if renewable electricity is primary energy source.
After converting electricity to hydrogen, shipping it and storing it, then converting it back to electricity in a fuel cell, the delivered energy can be below 30% of what was in the initial electricity input.
According to IEA, hydrogen-based fuels could take advantage of existing infrastructure with limited changes in the value chain, but at the expense of efficiency losses.
1. CarbonBrief
2. BloombergNEF
