That's also what I understood, but I'm asking if that's really an argument in favor of H2 vehicles: with electrical vehicles we can also store excess power as H2.
Of course we then need to burn it in power plants to convert back to electricity. But which is more efficient?
Electricity -> H2 -> electricity -> electrical motor with 80% efficiency
vs
Electricity -> H2 -> hydrogen motor with 30% efficiency
My guess is that "H2 -> electricity" is a bit more efficient than "H2 -> hydrogen motor". So using H2 as excess power storage for hydrogen engines is only marginally better than doing the same for electrical engines.
And that's for excess power storage. For "normal" production/consumption the electrical engine is way more efficient.
Of course we then need to burn it in power plants to convert back to electricity. But which is more efficient?
Electricity -> H2 -> electricity -> electrical motor with 80% efficiency
vs
Electricity -> H2 -> hydrogen motor with 30% efficiency
My guess is that "H2 -> electricity" is a bit more efficient than "H2 -> hydrogen motor". So using H2 as excess power storage for hydrogen engines is only marginally better than doing the same for electrical engines.
And that's for excess power storage. For "normal" production/consumption the electrical engine is way more efficient.