Fossil duels definition12/16/2023 Hence, the introduction of sustainable drop-in hydrocarbon aviation fuels (SAF) from non-fossil origins is considered by many stakeholders as a viable strategy to decarbonize aviation in the short to medium term. Other energy carriers either feature an energy density which is too low (e.g., batteries, extensively analyzed in ) or, like hydrogen, would require a complete change of the aviation system, including fuel and airport infrastructure as well as the expensive and time-consuming development and certification of new aircraft technology. However, it releases CO 2, which was removed from the biosphere millions of years ago and safely stored underground. ![]() Jet fuel, as a mixture of different hydrocarbons, features optimal characteristics in terms of performance, energy density and operability. The aviation industry is particularly challenged, as it is a hard-to-abate sector, where the replacement of the energy carrier by a low-carbon alternative is particularly difficult. These strategies are considered to achieve CO 2 emissions reductions at relatively low costs. As another policy, various countries have enacted laws that will prohibit the registration of new passenger cars with internal combustion engine. As a global trend, the share of renewable energies has increased to more than 28% in 2021, with a particularly strong in increase in (geographical) Europe, where renewables exceed 40% of electricity production. Promising strategies have been developed in various sectors of the economy to reduce CO 2 emissions, e.g., by scaling up renewable energies or the direct use of electricity in ground transport. With the Paris Agreement concluded in 2015, it is the legally binding aim to limit the average global temperature increase “to below 2 ☌ above pre-industrial levels”. The global community is challenged to limit the impacts of climate change to a tolerable level. Furthermore, alternatives to SAFs are presented and evaluated. Several suggestions for improvement are discussed. The economic issues associated with the introduction of SAFs are analyzed, with a particular focus on the European Commission’s proposal for a blending mandate. The purpose of this paper is to discuss the economics of climate change mitigation in aviation and the role SAFs can play. The introduction of a blending mandate by governments and the European Commission is associated with a range of challenges. In Europe, a mandatory quota for the use of sustainable fuels will most likely be introduced, starting in the year 2025. These fuels feature substantially reduced carbon life-cycle emissions in comparison to fossil fuels. The introduction of sustainable aviation fuels (SAF) is, among other policy instruments such as the European Emissions Trading Scheme, an option favored by policymakers in Europe to achieve this objective. ![]() The aviation industry is challenged to reduce its climate impact.
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