2022-12-10-美国能源部-可持续航空燃料大挑战_128页_3mb

Summary of the SAF Grand Challenge Roadmap

Core Content

The Sustainable Aviation Fuel (SAF) Grand Challenge is a U.S. government initiative aimed at reducing greenhouse gas (GHG) emissions in the aviation sector by promoting the production and use of sustainable aviation fuel. The roadmap outlines a comprehensive strategy to achieve two key goals:

• 3 billion gallons of SAF per year by 2030, with at least a 50% reduction in life cycle GHG emissions compared to conventional jet fuel.
• 35 billion gallons of SAF per year by 2050, covering 100% of projected aviation jet fuel use.

SAF is a drop-in liquid hydrocarbon jet fuel produced from renewable or waste resources and compatible with existing aircraft and engines. It is a critical component of the U.S. strategy to meet net-zero GHG emissions from aviation by 2050, as outlined in the 2021 Aviation Climate Action Plan.

Main Objectives

The roadmap emphasizes a whole-of-government approach, coordinating actions across federal agencies, including the Department of Energy (DOE), Department of Transportation (DOT), Department of Agriculture (USDA), and Environmental Protection Agency (EPA). The initiative also involves collaboration with national laboratories, universities, non-governmental organizations (NGOs), and industry stakeholders.

The roadmap is structured around six action areas, each with specific workstreams that define critical topics and activities to be addressed:

1. Feedstock Innovation (FI)
2. Conversion Technology Innovation (CT)
3. Building Supply Chains (SC)
4. Policy and Valuation Analysis (PA)
5. Enabling End Use (EU)
6. Communicating Progress and Building Support (CP)

These workstreams aim to:

• Expand the supply and use of SAF.
• Reduce the cost of SAF.
• Enhance the sustainability of SAF production.

Key Information

Feedstock Innovation

• Focus on understanding and maximizing sustainable feedstock sources, including lipids (fats, oils, and greases), biomass, wastes and residues, and gaseous carbon sources.
• Activities include improving feedstock supply logistics, increasing reliability of handling systems, and ensuring environmental and economic sustainability.

Conversion Technology Innovation

• Aim to decarbonize, diversify, and scale current and future conversion technologies.
• Workstreams include reducing risk during scale-up, developing innovative unit operations, and ensuring compatibility with existing infrastructure.

Building Supply Chains

• Support the development and expansion of regional stakeholder coalitions.
• Include modeling and demonstration of supply chains, as well as investment in production infrastructure.

Policy and Valuation Analysis

• Develop environmental models and data for SAF.
• Conduct techno-economic and production potential analysis.
• Inform policy development to support long-term SAF deployment.

Enabling End Use

• Facilitate the use of drop-in SAF and blends up to 100%.
• Integrate SAF into fuel distribution infrastructure.
• Investigate synthetic aviation turbine fuels for performance and producibility advantages.

Communicating Progress and Building Support

• Engage stakeholders in sustainability outreach.
• Conduct benefits assessments and impact analyses.
• Measure progress and communicate public benefits of the SAF Grand Challenge.

Key Actions for 2030

To meet the 2030 goals, the roadmap highlights the need for:

• Immediate focus on commercially ready conversion technologies and feedstocks.
• Lipid-based pathways as the primary route to 2030, with support for waste, forest, and agricultural residue.
• Stakeholder coalitions to build and sustain SAF supply chains.
• Infrastructure investment to support industry deployment.
• Environmental modeling and policy analysis to optimize existing regulations and inform new ones.
• Blending and use flexibility to reduce costs and logistics barriers.

Key Actions for 2030-2050

For the longer-term goals (2030-2050), the roadmap emphasizes:

• Ongoing research, development, and demonstration (RD&D) of new feedstocks and conversion technologies.
• Scaling biomass, waste, and residue feedstocks to reduce carbon intensity and cost.
• RD&D on feedstock logistics to improve efficiency and reliability.
• De-risking scale-up through pilot projects and integrated R&D.
• Modeling and demonstration of sustainable regional supply chains.
• Continued investment in infrastructure and policy frameworks to support future growth.

Legislative Support

The Inflation Reduction Act (IRA) of 2022 provides significant support for SAF:

• A two-year tax credit for SAF blending.
• A three-year tax credit for SAF production.
• A $290 million grant program over four years to support SAF production, transportation, blending, and storage.
• SAF must achieve at least a 50% improvement in GHG emissions compared to conventional fuel, with tax credits increasing based on emission performance.

Conclusion

The SAF Grand Challenge Roadmap is a dynamic and iterative process, designed to coordinate federal actions with industry efforts to accelerate the production and use of sustainable aviation fuel. It outlines a multi-decade strategy that includes near-term actions to meet 2030 goals and mid- to long-term innovations to achieve 2050 targets. The initiative is supported by interagency collaboration, public-private partnerships, and legislative incentives to reduce costs, enhance sustainability, and ensure the long-term viability of the U.S. aviation and aerospace industries.