Unless Elon Musk can solve the energy density problems associated with batteries and hydrogen, it seems highly improbable that passenger planes will be powered by either in anyone’s lifetime.
Batteries are too heavy to be a practical solution for flying long distances with heavy cargoes, and hydrogen has a different problem: It’s so light that you would need massive amounts of compressed or liquefied hydrogen to power a passenger plane, which would dramatically increase its fuel storage capacity requirements.
These reasons are why sustainable aviation fuel (SAF) is considered the most practical option for decarbonizing air travel, which in Canada accounts for about four per cent of Canada’s total
→ Continue reading at BIV