WORKING PAPER 2023-25 - Priorities for government spending on net-zero aviation
3 November 2023
Appendix A presents a version of the cost estimates inclusive of domestic aviation based on the global fuel volume data in the LTAG worksheet. [...] Because the LTAG report did not publish the feedstock split assumption between 2035 and 2050, we estimated the feedstock split in 2050 by manually adjusting the split until the weighted average fuel price and life-cycle emissions in 2050 was close to the values shown in the report. [...] Government spending will be key to the commercialization of various pathways in the current decade, before a gradual shift of the burden to industry starting in the 2030s (Figure 4). [...] All values are in million USD and represent either the amount spent by a stakeholder (on the left of the diagram) or the amount spent on a type a technology (on the right). [...] The actual investments into e-kerosene in the 2020s may be lower due to the slow development process, but the total amount of e-kerosene needed likely remains the same.