The Next Investment Frontier: Feedstocks, Infrastructure, and Policy in the Expansion of SAF
By Samuel Herrera, Carbon Free Aviation Journalist, 4 Nov 2025
The sustainable aviation fuel (SAF) market has entered a new phase: it is no longer just a climate target but a strategic investment opportunity.
The transition toward decarbonized aviation is driving an ecosystem where public policy, technological innovation, and new supply chains are shaping capital flows.
In 2025, the challenge is not only to produce more SAF but to do so profitably, diversely, and with supply security. Recent global initiatives—from the UK’s new mandates to developments in the U.S. and Asia—signal a structural shift: SAF is evolving from an environmental experiment into an industrial asset with long-term return potential.
The new axis of competitiveness
According to the report “Out of the Fryer” published by Future Energy Global (FEG) and PA Consulting, the industry must break its dependence on used cooking oil (UCO)—the main feedstock for HEFA-based (Hydroprocessed Esters and Fatty Acids) SAF. While UCO has been essential for early-scale production, its limited global availability is already creating supply bottlenecks and cost pressures.
The study identifies four commercially viable alternatives: vegetable oils such as soybean and canola, oilseed cover crops, animal by-products, and distillers corn oil. These options could triple production capacity and build a more resilient supply chain.
As Grant Gunter of PA Consulting explained, the key lies in “credible, science-based strategies to scale feedstocks without displacing other markets.”
For investors, this opens a window into integrated agricultural and advanced refining projects, where profitability depends as much on feedstock origin as on logistical efficiency.
Price stability: a policy that reduces investment risk
The United Kingdom is taking a decisive step on the regulatory front. Its new Sustainable Aviation Fuel Bill establishes a guaranteed strike price mechanism that protects producers when SAF sells below a reference value and requires repayment when prices rise above it.
Inspired by the contracts-for-difference model used in the power sector, this policy reduces market volatility and provides revenue certainty, a key condition for attracting institutional capital.
UK Transport Minister Keir Mather stated that the impact on airfares will be “less than the cost of a cup of coffee,” emphasizing that the measure aims to stimulate investment without limiting travel demand.
Combined with a £63 million program for domestic SAF production, the UK is positioning itself as one of the most attractive private capital destinations, balancing direct subsidies with long-term market stability.
Infrastructure: the invisible link of growth
Scaling SAF is not only about producing it — it’s about connecting it to existing fuel networks.
Energy logistics company Exolum, one of Europe’s largest, announced a £4.5 million investment to build the UK’s first independent SAF blending facility at Redcliffe Bay, in southwest England.
The site will supply airports that handle 40% of UK departures — including Heathrow and Gatwick — integrating sustainable fuel through Exolum’s 2,000 km national pipeline network.
This investment represents the kind of infrastructure that can turn regulatory mandates into real, stable demand by ensuring direct market access for producers and importers.
Technology and demonstration: the signal that builds confidence
In parallel, the aviation industry continues to prove the technical feasibility of SAF.
Honda Aircraft Company achieved a successful flight in North Carolina of its HondaJet Elite II, operating on 100% SAF, a blend of HEFA-SPK and HDO-SAK fuels.
Backed by certification from the National Business Aviation Association (NBAA), the achievement confirms that existing aircraft can fly without modification using sustainable fuels.
Beyond its technological symbolism, this milestone strengthens market confidence and validates next-generation innovation investments, such as synthetic SAF and hydrogen-based e-fuels.
A value chain attracting capital
The expansion of SAF is creating a new, interconnected value chain — from agricultural production and chemical processing to distribution and technical certification.
Each link requires investment but also offers returns aligned with Net Zero goals from both governments and airlines.
Analysts estimate that the global SAF market could exceed $50 billion by 2030, driven by mandatory blending targets, strategic infrastructure, and blended public–private financing frameworks.
In this new phase, feedstocks define scalability, policy defines confidence, and infrastructure defines speed.