Large-scale sustainable aviation fuel (SAF) production and use is essential to achieving net-zero aviation by 2050. In this perspective, we argue that catalysing SAF production from the very low level of 2022 (0.1% of the 2050 required level for net-zero) can be achieved via the establishment of “green flight paths” (GFPs) that kick-start SAF implementation through targeted support from key international partner countries. The development of GFPs builds on the Clydebank Declaration from COP26 for green shipping corridors, which is aimed at transforming emissions at sea. Similarly, we define here GFPs as specific aviation routes where financially viable supply chain opportunities for zero-emission air-travel are incentivised. We examine here how GFPs are likely to be spearheaded by countries, such as the UK and the UAE, which are both large international aviation markets that have the political, technical and production capabilities to be world-leaders in pursuing the earlier stages of investment (which are inherently riskier) in developing SAF commercial production capacity for the decarbonization of their aviation sectors. We further discuss how from an energy justice perspective, GFPs are ideal for catalysing SAF adoption and cost reduction in a just way by placing the burden where accountability is required.

中文翻译：

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绿色飞行路径：到 2050 年实现净零航空的催化剂


大规模可持续航空燃料 （SAF） 的生产和使用对于到 2050 年实现航空净零排放至关重要。从这个角度来看，我们认为，可以通过建立“绿色飞行路径”（GFP） 来实现从 2022 年的极低水平（2050 年净零排放所需水平的 0.1%）开始生产 SAF，通过主要国际伙伴国的针对性支持来启动 SAF 的实施。GFP 的开发建立在 COP26 关于绿色航运走廊的克莱德班克宣言的基础上，该宣言旨在改变海上排放。同样，我们在这里将 GFP 定义为特定的航空航线，其中激励了经济上可行的零排放航空旅行供应链机会。我们在这里研究了英国和阿联酋等国家如何带头推出 GFP，这两个国家都是大型国际航空市场，具有在寻求早期投资阶段（本质上风险更大）方面处于世界领先地位，以发展 SAF 商业生产能力，以实现其航空业的脱碳。我们进一步讨论了从能源正义的角度来看，GFP 如何通过将负担放在需要问责的地方，以公正的方式促进 SAF 的采用和降低成本。