持続可能航空燃料の将来性を現実的に分析(WSU study offers realistic look at the future of sustainable aviation fuel)

2026-05-26 ワシントン州立大学(WSU)

Washington State University の研究チームは、持続可能な航空燃料(SAF)の将来普及可能性を現実的視点から評価した。研究では、バイオマス由来燃料や廃棄物利用型燃料など複数のSAF生産経路について、原料供給量、製造コスト、温室効果ガス削減効果、インフラ適合性を総合分析した。その結果、SAFは航空分野の脱炭素化に不可欠である一方、原料確保や大規模生産能力、価格競争力などに大きな課題が残ることが示された。特に農業残渣や廃棄物利用は有望だが、需要急増に対応するには政策支援や技術革新が必要と指摘している。研究者らは、短期的には従来燃料との混合利用が現実的であり、長期的には生産効率向上と供給網整備が航空業界の持続可能性実現に重要だとしている。

持続可能航空燃料の将来性を現実的に分析(WSU study offers realistic look at the future of sustainable aviation fuel)
Sustainable aviation fuel has emerged as one of the aviation industry’s leading near-term strategies for reducing carbon emissions because it can already be blended with conventional jet fuel and used in existing aircraft and airport infrastructure (photo by BillionPhotos.com on Adobe Stock).

<関連情報>

2030年の米国持続可能な航空燃料目標達成に向けた実践的評価 Pragmatic assessment of meeting the 2030 U.S. sustainable aviation fuel goal

Kristin Brandt, Lina Martinez-Valencia, Dane Camenzind, Alessandro Martulli, Robert Malina, Florian Allroggen, Michael Wolcott
Biomass and Bioenergy  Available online: 13 November 2025
DOI:https://doi.org/10.1016/j.biombioe.2025.108516

Highlights

  • U.S. SAF production will be dominated by HEFA through 2030.
  • SAF production in the U.S. is expected to fall short of the near-term goal of 11.4 billion L/yr.
  • Further growth of the nascent SAF industry will require additional supportive measures.

Abstract

Sustainable aviation fuel (SAF) production is essential for decarbonizing the aviation sector in the short and mid-term as well as maintaining the global competitiveness of U.S. airlines, supporting job creation, and ensuring U.S. energy independence. The near-term U.S. SAF target, set by the SAF Grand Challenge, is 11.4 billion liters (3 billion gallons) of domestic SAF production by 2030, with a minimum 50 % reduction in lifecycle greenhouse gas emissions. In 2024 U S. SAF production was less than 2 % of the stated goal, demonstrating that the remaining production growth is significant. Barriers to scale-up include technological readiness, feedstock availability, and delays in facility development. This study uses a database of U.S. SAF production announcements to assess the feasibility of attaining the 2030 targets by analyzing production potential, construction paradigms, feedstock availability, and CO2 abatement cost. Our analysis indicates that the hydroprocessed esters and fatty acids pathway will dominate U.S. SAF production through 2030, with notable contributions from alcohol to jet and co-processing. However, probable U.S. production of SAF is predicted to fall short of the current goal by 3.6-billion liters although there are scenarios that meet the goal. Existing U.S. policies favor on-road transportation fuels and are insufficient to drive necessary SAF production scale-up. Additional measures, such as non-government scope 3 emission purchases, long-term incentives, a national low-carbon fuel standard, or volume mandates, are options to close the gap. These measures are needed to ensure the profitability of SAF production and competitiveness with renewable diesel.

0300航空・宇宙一般
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