Net Zero at 35,000 Feet Faces Growing Risk as Sustainable Aviation Fuel Shortages, Carbon Credit Gaps, and Policy Mismatches Threaten Aviation’s Climate Goals: Exclusive

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The global aviation industry has largely united behind one of the most ambitious environmental commitments in modern transportation history: achieving net zero aviation emissions by 2050. Airlines, aircraft manufacturers, airports, fuel producers, regulators, and governments broadly agree that decarbonization is no longer optional. Yet despite years of investment, policy development, and technological progress, concerns are intensifying that the sector’s climate transition is becoming trapped between aspiration and execution. The central pillars of the industry’s strategy—Sustainable Aviation Fuel (SAF) and the Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA)—are increasingly facing economic, supply-chain, and regulatory pressures that threaten to slow progress toward global climate targets.

Industry discussions at the recent aviation leadership gathering in Rio de Janeiro revealed growing frustration over the widening gap between climate ambitions and operational realities. While governments continue introducing mandates to accelerate adoption of renewable aviation fuels, actual production remains far below future requirements. Simultaneously, airlines face rising compliance costs, limited access to sustainable fuel supplies, and a significant shortage of approved carbon credits under ICAO’s CORSIA framework. Aviation leaders warn that unless policymakers align supply development, infrastructure investment, market mechanisms, and regulatory expectations, the industry risks entering a prolonged period where environmental commitments exist on paper but remain difficult to achieve at scale.

Sustainable Aviation Fuel Remains the Backbone of Aviation Decarbonization but Supply Lags Demand

The aviation sector continues to view Sustainable Aviation Fuel as the most practical and immediately deployable solution for reducing emissions because it can be used within existing aircraft fleets and airport infrastructure. Unlike hydrogen-powered aircraft or battery-electric aviation technologies, SAF requires no fundamental redesign of today’s commercial aviation ecosystem. However, production volumes remain strikingly low compared with industry needs.

According to industry forecasts, SAF production is expected to reach approximately 2.4 million tonnes in 2026, representing only a small fraction of global jet fuel demand. Despite significant investments and technological advancements, production growth has not kept pace with the aggressive timelines established by governments and regulators.

The gap highlights a critical challenge: demand is accelerating faster than supply infrastructure can develop.

Policymakers Face Pressure to Prioritize Production Before Expanding Mandates

A growing number of aviation stakeholders argue that governments have focused heavily on fuel consumption mandates without adequately addressing the barriers preventing large-scale fuel production. Industry economists increasingly emphasize that SAF should be treated as part of a broader energy transition strategy rather than solely as an aviation issue.

Refining economics remain complex because jet fuel represents only a portion of refinery output. Investments in sustainable fuel production therefore depend on wider energy market conditions, feedstock availability, infrastructure readiness, and long-term policy certainty. Without coordinated support across the energy ecosystem, mandatory consumption requirements risk creating artificial shortages and escalating costs.

Industry leaders increasingly advocate for supply-first policies that encourage production growth before imposing aggressive consumption targets.

Rising Compliance Costs Are Making the Transition More Expensive Than Expected

One of the most contentious issues emerging across major aviation markets is the growing cost of compliance with sustainable fuel regulations. While SAF itself already costs significantly more than conventional jet fuel, additional regulatory mechanisms have further increased the financial burden on airlines.

Industry data indicate that SAF prices remain several times higher than traditional jet fuel prices. In some regulated markets, compliance-related pricing structures have pushed effective SAF costs substantially beyond underlying production costs, creating concerns about affordability and competitiveness.

Airlines argue that these cost increases may ultimately affect profitability, ticket pricing, and the pace of decarbonization investments if not carefully managed.

E-SAF Ambitions Highlight a Major Gap Between Climate Targets and Industrial Capacity

Synthetic aviation fuels, commonly referred to as e-SAF, are widely considered essential for achieving long-term net-zero aviation objectives. Produced using renewable electricity and captured carbon, these fuels offer one of the most scalable future pathways for deep decarbonization.

However, current industrial capacity remains dramatically below projected demand. Existing global e-SAF production and construction projects account for only a small percentage of future regulatory requirements. Analysts estimate that dozens of new facilities would need to be developed within a few years to meet mandated targets.

The disparity raises concerns that regulatory expectations may outpace industrial development capabilities.

Carbon Credit Shortages Create Additional Challenges for the CORSIA Framework

Beyond fuel-related concerns, aviation’s global climate strategy also depends heavily on the successful operation of CORSIA, the international carbon offsetting system established through the International Civil Aviation Organization.

CORSIA allows airlines to offset unavoidable emissions through approved carbon credits and sustainable fuel use. While the framework remains one of the most comprehensive global climate mechanisms in any industry, credit availability is emerging as a major obstacle.

Current projections suggest demand for eligible carbon credits will significantly exceed available supply during the next compliance cycle, creating uncertainty for airlines seeking to meet environmental obligations.

The imbalance mirrors the broader SAF challenge: climate obligations are expanding faster than the mechanisms required to fulfill them.

Conclusion

The aviation industry’s commitment to net zero emissions by 2050 remains firmly intact, but achieving that objective is becoming increasingly dependent on policy coherence, supply-chain expansion, and market development. Sustainable Aviation Fuel continues to represent the cornerstone of aviation decarbonization, while CORSIA provides a critical framework for addressing emissions that cannot yet be eliminated. However, persistent supply shortages, escalating compliance costs, fragmented regulations, and carbon credit deficits reveal that ambition alone cannot deliver the transition. The industry’s message is becoming clearer: successful decarbonization will require governments, fuel producers, investors, and airlines to align infrastructure, production capacity, and policy timelines before regulatory mandates outpace the realities of industrial development.

FAQs

What is Sustainable Aviation Fuel (SAF)?
Sustainable Aviation Fuel (SAF) is a renewable alternative to conventional jet fuel produced from sources such as waste oils, agricultural residues, municipal waste, and synthetic e-fuels generated using renewable electricity. It can be used in existing aircraft without major modifications.

Why is SAF considered critical to aviation’s net-zero strategy?
SAF is viewed as the most immediate and scalable solution for reducing aviation emissions because it works with current aircraft fleets and airport infrastructure, making it easier to deploy than hydrogen or electric aviation technologies.

What challenges are slowing SAF adoption worldwide?
Key obstacles include limited feedstock availability, high production costs, inadequate refining capacity, certification delays, infrastructure constraints, and regulatory frameworks that often create demand faster than supply can be developed.

How much SAF is expected to be produced globally in 2026?
Industry estimates indicate that global SAF production could reach approximately 2.4 million tonnes in 2026, representing only about 0.8% of total global jet fuel consumption.

What is CORSIA and why is it important?
The Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA) is a global climate framework established by the International Civil Aviation Organization (ICAO) that allows airlines to offset emissions through approved carbon credits and sustainable fuel use.

Why are airlines concerned about carbon credit availability under CORSIA?
Projected demand for CORSIA-compliant carbon credits significantly exceeds current supply, creating a potential shortfall that could make compliance more difficult and expensive for airlines.

How expensive is SAF compared with conventional jet fuel?
Recent industry data show conventional jet fuel averaging around US$721 per tonne, while SAF averages roughly US$2,180 per tonne, with compliance-related costs in some markets pushing effective prices even higher.

What is e-SAF and how does it differ from traditional SAF?
E-SAF, or synthetic aviation fuel, is produced using renewable electricity, hydrogen, and captured carbon dioxide. It is considered a long-term solution for deep aviation decarbonization but currently has very limited production capacity.

Why are aviation industry leaders criticizing some SAF mandates?
Many airline executives argue that governments have focused heavily on consumption mandates without first ensuring adequate fuel production, infrastructure, and supply-chain development, creating potential shortages and higher costs.

Can aviation still achieve net-zero emissions by 2050?
Industry leaders believe the target remains achievable, but success will depend on rapidly expanding SAF production, strengthening global carbon markets, increasing investment in clean energy infrastructure, and improving policy coordination across countries and regions.

Which regions are expected to become major SAF producers?
The Americas, particularly Brazil, are viewed as major future SAF production hubs due to abundant biomass resources and strong potential for large-scale renewable fuel development.

What is the biggest risk facing aviation’s climate transition today?
The biggest concern is the widening gap between climate ambitions and practical implementation, where regulatory requirements, fuel availability, carbon credit supply, and industrial capacity are not advancing at the same pace.