Government launches £219m Low Carbon Fuels Fund for aviation

Government commits £219 million to UK sustainable aviation fuel production

The UK government has committed £219 million through a new Low Carbon Fuels Fund designed to accelerate production of sustainable aviation fuel. The investment aims to support an estimated 15,000 jobs in the aviation sector while positioning the UK as a manufacturing base for fuels that could provide more than half the emissions reductions aviation needs by 2050.

Sustainable aviation fuel, known as SAF, represents one of the few technically viable routes to decarbonising long-haul flight. Unlike battery technology, which faces severe weight and range constraints on intercontinental routes, SAF can be used in existing aircraft with minimal modifications. However, production remains extremely limited. In 2025, SAF accounted for just 0.6% of total airline fuel consumption globally, up from 0.3% the previous year.

The fund arrives as international frameworks begin to set clearer expectations. The International Civil Aviation Organization has established a global SAF framework targeting a 5% reduction in CO2 emissions from international aviation by 2030. That target relies on sustainable aviation fuels, lower-carbon alternatives, and other cleaner energy sources working in combination.

For UK businesses, particularly those in manufacturing, energy, and transport sectors, the announcement signals a policy direction with direct commercial implications. SAF production requires feedstock supply chains, processing facilities, and distribution infrastructure. Consequently, the fund represents both a climate measure and an industrial policy intervention intended to stimulate private investment and production capacity.

How the international SAF framework operates

The International Civil Aviation Organization has structured its global framework around four core elements. These are policy and planning, regulatory frameworks, implementation support, and financing. Each element addresses a different barrier to scaling up production and adoption.

Policy and planning components establish national roadmaps and targets. Regulatory frameworks create certification standards and blending mandates that ensure SAF meets safety and performance requirements. Implementation support includes technical assistance for governments and industry. Financing mechanisms, such as the UK fund, are designed to bridge the gap between early-stage production and commercial viability.

This structure reflects a recognition that SAF cannot scale through market forces alone. Production costs currently far exceed conventional jet fuel in most markets. Therefore, government intervention is required to create demand signals, reduce investment risk, and support the transition from pilot projects to industrial-scale facilities.

Around 140 SAF projects are currently underway globally. These projects span more than 100 producers across 31 countries. However, the majority remain in development or early production phases. Moving these projects to full commercial operation requires substantial capital, regulatory certainty, and guaranteed offtake agreements.

Production bottlenecks and the need for scale

SAF production faces several technical and economic challenges. Feedstock availability represents one constraint. Sustainable aviation fuel can be produced from waste oils, agricultural residues, forestry byproducts, or synthesised from captured carbon and hydrogen. Each pathway has different costs, scalability limits, and sustainability considerations.

Waste oils and fats, for example, offer relatively straightforward conversion processes but limited global supply. Agricultural and forestry residues are more abundant but require more complex processing. Synthetic fuels produced through power-to-liquid processes offer the greatest long-term potential but currently face the highest costs.

Processing infrastructure also remains underdeveloped. Most existing refineries are optimised for crude oil, not biomass or synthetic feedstocks. Building dedicated SAF production facilities requires significant capital investment. Furthermore, these facilities must achieve economies of scale to compete with conventional fuel pricing.

Distribution and certification add further complexity. SAF must meet rigorous aviation fuel standards to ensure safe operation. It must also be blended and distributed through existing fuel supply networks. These requirements create additional costs and coordination challenges that slow market development.

The fund’s role in closing the investment gap

The £219 million Low Carbon Fuels Fund is designed to address several of these barriers simultaneously. By providing capital for production facilities, the fund reduces the upfront investment risk that often deters private sector participation. This is particularly important for first-of-a-kind commercial plants where technology risk remains high.

The fund also signals policy commitment that can attract complementary private investment. SAF projects typically require blended finance from public and private sources. Government funding can therefore serve as an anchor that unlocks larger pools of commercial capital.

Job creation represents another policy objective. The estimated 15,000 aviation-sector jobs supported by the fund would span manufacturing, engineering, operations, and supply chain management. These roles would be distributed across regions with existing aerospace or energy infrastructure.

However, the fund’s effectiveness will depend on implementation details not yet fully specified. Key questions include how funds will be allocated between different production pathways, what matching requirements apply for private investment, and whether support extends to feedstock development and distribution infrastructure.

Why aviation decarbonisation depends on SAF

Aviation accounts for approximately 2-3% of global CO2 emissions. While that share may seem modest, the sector presents unique decarbonisation challenges. Electric batteries cannot power long-haul flights with current technology. Weight-to-energy ratios make battery propulsion impractical for journeys exceeding a few hundred miles.

Hydrogen offers another potential pathway, but it requires completely redesigned aircraft and ground infrastructure. Commercial hydrogen-powered aviation remains decades away from widespread deployment. Meanwhile, aviation demand continues to grow, particularly in emerging markets.

Sustainable aviation fuel therefore represents the only near-term solution that works with existing aircraft fleets. Airlines can use SAF as a drop-in replacement for conventional jet fuel, requiring no modifications to engines or fuel systems. This compatibility dramatically reduces the transition timeline and capital requirements compared to alternative technologies.

Industry analysis suggests SAF could deliver 38% to 58% of the emissions reductions needed to achieve net zero aviation by 2050. The remaining reductions would come from operational improvements, aircraft efficiency gains, and potentially hydrogen or electric propulsion on shorter routes. Consequently, SAF is not the only answer, but it is an essential component of any credible decarbonisation pathway.

Cost competitiveness and the price gap

SAF currently costs significantly more than conventional jet fuel. Depending on the production pathway and feedstock, SAF can be two to five times more expensive. This price gap reflects higher feedstock costs, smaller production scales, and newer processing technologies that have not yet achieved full efficiency.

Narrowing this gap requires both supply-side and demand-side interventions. On the supply side, larger production facilities, improved conversion processes, and cheaper feedstock sources can all reduce costs. Government funding accelerates these developments by de-risking early investments.

On the demand side, blending mandates and carbon pricing mechanisms can create guaranteed markets for SAF. The UK has introduced a SAF mandate requiring fuel suppliers to blend increasing percentages of sustainable fuel over time. These mandates provide the revenue certainty that makes large-scale production investments viable.

Carbon pricing also plays a role. As the cost of emitting CO2 rises through taxation or emissions trading schemes, the relative price advantage of conventional fuel diminishes. This creates economic space for SAF to compete even before production costs fully converge.

Nevertheless, closing the price gap will take time. Most analysts expect SAF to remain more expensive than conventional fuel throughout the 2020s. Government support during this transition period is therefore critical to maintaining production growth and preventing investment from stalling.

Critical details for UK manufacturers and suppliers

• The UK government has allocated £219 million through the Low Carbon Fuels Fund to accelerate sustainable aviation fuel production and support an estimated 15,000 jobs in the aviation sector.
• Sustainable aviation fuel accounted for just 0.6% of global airline fuel consumption in 2025, up from 0.3% in 2024, indicating significant growth potential but very limited current market penetration.
• The International Civil Aviation Organization has set a global framework targeting a 5% reduction in CO2 emissions from international aviation by 2030 through SAF and other lower-carbon fuels.
• Industry analysis indicates SAF could provide between 38% and 58% of the emissions reductions needed for net zero aviation by 2050, making it essential rather than optional for decarbonisation.
• Approximately 140 SAF projects are currently underway globally across more than 100 producers in 31 countries, though most remain in development or early production stages.
• SAF production requires diverse feedstocks including waste oils, agricultural residues, forestry byproducts, or synthesised fuels from captured carbon, each with different costs and scalability constraints.
• Current SAF costs remain two to five times higher than conventional jet fuel, requiring government intervention to bridge the investment gap and support production scale-up.

What UK businesses should consider now

Businesses across several sectors should pay attention to this funding announcement. Manufacturers with capabilities in chemical processing, energy production, or feedstock supply may find new commercial opportunities as SAF production expands. Similarly, engineering firms with experience in fuel infrastructure or aviation systems could benefit from project development work.

Companies already working to reduce their carbon footprint should also note the broader policy direction. SAF development forms part of a wider pattern where government is using industrial policy tools to accelerate decarbonisation. This approach combines climate objectives with job creation and economic development goals.

For businesses that rely on air freight or business travel, the expansion of SAF production has indirect implications. As blending mandates increase, airlines will pass through higher fuel costs. Understanding these cost dynamics can inform budget planning and procurement decisions.

Supply chain considerations also matter. Companies involved in public procurement or large private tenders increasingly face carbon reporting and reduction requirements. Carbon reporting programs that meet PPN 06/21 requirements often need to account for Scope 3 emissions, which include business travel and logistics. As SAF becomes more available, it may offer a credible option for reducing reported emissions from these sources.

Businesses should also consider how SAF development intersects with broader sustainability commitments. Many UK companies have made net zero pledges that require credible pathways for reducing emissions across all operations. Aviation often represents one of the hardest areas to address. Therefore, the availability of SAF provides a practical tool for making progress on otherwise difficult targets.

Training and skills development will become increasingly important as the SAF sector grows. Companies entering this market will need employees who understand both traditional fuel processing and newer biomass or synthetic conversion technologies. Training programs covering emerging low-carbon sectors can help build the capabilities needed to compete for new contracts and projects.

Where to find authoritative information and guidance

The International Civil Aviation Organization provides detailed information on global SAF frameworks, including policy guidance and technical standards. Their resources explain how different countries are implementing targets and what certification requirements apply to sustainable fuels.

The UK Department for Transport publishes guidance on the national SAF mandate, including blending percentages, compliance timelines, and sustainability criteria. This information is essential for businesses considering investments in production or feedstock supply.

The Renewable Transport Fuel Obligation, administered by the Department for Energy Security and Net Zero, sets out the regulatory framework for renewable fuels in the UK. Understanding these rules is critical for any company involved in fuel supply or production.

For businesses focused on carbon reduction and compliance, support services for ESG compliance and carbon reporting can help navigate the complex landscape of emissions accounting, particularly where Scope 3 emissions from aviation and logistics are concerned.