This study claims that it is unrealistic to have net-zero air travel fueled by hydrocarbons by 2050[0]. If the fuel is made from biomass, then increase in land

This study claims that it is unrealistic to have net-zero air travel fueled by hydrocarbons by 2050[0]. If the fuel is made from biomass, then increase in land use alone would nullify any benefits. If the fuel is made from renewable electricity, then they end up using 9% of forecast renewable electricity production in 2050. This ends up cannibalizing electricity use for other things. It 10 times more effective to displace one coal plant than to use the same electricity to make fuel. This does assume that clean electricity is limited, so a workaround is simply to build more nuclear powerplants. Without severely curtailing flight this may be the only option. [0]https://www.sciencedirect.com/science/article/pii/S0048969723025044 https://www.sciencedirect.com/science/article/pii/S004896972...