Does not matter, hydrogen is not really the future
this post was submitted on 18 Oct 2024
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We don't have any "green" hydrogen source at the moment. Hydrogen generation, currently, still releases carbon.
Hydrogen "engines" are only ~40% efficient compared to, say, BEVs that are ~80% efficient.
It's important to look, not only at the vehicle, but at the energy efficiency of the system as a whole.
Well-To-Wheel it's referred to as.
Gasoline: ~20%
Diesel: ~30%
H Fuel Cell: ~25%
BEV (fossil power): ~20%*
BEV (renewable): ~55%*
*BEV is highly dependent on energy source. Anwhere from ~20% WTW from natural gas power generation to 75% from roof-mounted solar.
Keep in mind this is a summary of a summary of a summary.
Sources:
- https://www.researchgate.net/publication/344860096_Comparison_of_the_Overall_Energy_Efficiency_for_Internal_Combustion_Engine_Vehicles_and_Electric_Vehicles
- https://c2e2.unepccc.org/wp-content/uploads/sites/3/2019/09/analysis-of-hydrogen-fuel-cell-and-battery.pdf
- https://yaleclimateconnections.org/2022/08/electrifying-transportation-reduces-emissions-and-saves-massive-amounts-of-energy/
Yup, that's the problem.
we absolutely do have green hydrogen at the moment https://rmi.org/insight/chinas-green-hydrogen-new-era/
