Executive Summary
Used Cooking Oil (UCO) has assumed a strategic position in global aviation decarbonization as the primary feedstock for the HEFA-SPK pathway, which currently accounts for approximately 85% of all Sustainable Aviation Fuel (SAF) production. However, the structural gap between regulatory mandates and physical feedstock availability is widening, creating systemic risks for airlines, fuel suppliers, and policymakers who have built compliance strategies on assumptions of scalable UCO supply.
This intelligence brief examines four structural dimensions of the UCO-SAF value chain: (1) the technical parameters of HEFA conversion and pathway dependencies, (2) the supply-demand balance and China-EU trade architecture, (3) the integrity of feedstock certification following the EU Commission's July 2025 fraud investigation, and (4) the regulatory architecture governing SAF deployment across major aviation markets.
The analysis draws on data from EASA, ICAO, IEA, Neste's 2025 Annual Report, the AFDC/US DOE, EU Commission proceedings, and Energy Solutions proprietary modeling to project UCO availability, price trajectories, and SAF compliance scenarios through 2050.
HEFA Monoculture
85% of current SAF production relies on the HEFA pathway. UCO constitutes 70-80% of HEFA feedstock. This creates a single-point-of-failure architecture for global aviation decarbonization — a supply disruption in one feedstock corridor compromises SAF compliance across multiple jurisdictions.
Regulatory Dependency
ReFuelEU mandates structurally depend on Chinese UCO imports, which supply an estimated 2.5-3.5 million tonnes per year (50-70% of EU imports). Any trade disruption, tariff escalation, or Chinese domestic biofuel policy shift results in immediate EU non-compliance risk.
Certification Compromised
The EU Commission's 18 July 2025 investigation concluded that systematic mislabeling of virgin vegetable oils as UCO has occurred in Chinese biofuel supply chains. The Union Database (UDB, launched November 2024) now tracks 31,000 operators, but industry estimates suggest 20-30% of imported 'UCO' may still be mislabeled.
Feedstock Deficit
Global UCO collection capacity of 16-20 million tonnes per year cannot satisfy the projected SAF demand of 60-120 million tonnes by 2035. Even at 100% allocation to aviation, UCO-derived SAF meets only 3-8% of 2030 demand. The feedstock deficit becomes binding by 2028-2030 under current mandate trajectories.
Technical Foundation: HEFA Pathway Deep Dive
The HEFA (Hydroprocessed Esters and Fatty Acids) pathway converts lipid feedstocks — primarily UCO, tallow, and vegetable oils — into drop-in aviation fuel through a four-stage process: collection and filtration to remove solid contaminants; hydrodeoxygenation using hydrogen to strip oxygen from triglyceride molecules; isomerization to improve cold-flow properties; and fractional distillation into SAF, renewable diesel, and naphtha co-products.
The pathway yields approximately 0.7-0.8 tonnes of SAF per tonne of UCO input, with co-products including 15-20% renewable diesel and 5-10% naphtha. UCO quality parameters — free fatty acid (FFA) content, moisture levels, and contaminant profiles (metals, chlorides, polymers) — critically influence hydrogen consumption, catalyst life, and overall production economics. High-FFA UCO (>5%) requires additional pretreatment, increasing hydrogen demand by 5-15% and reducing catalyst cycle length by 20-40%.
ASTM-Approved SAF Production Pathways Comparison (2026)
| Pathway | ASTM Spec | Max Blend Limit | Technology Readiness | Typical CI Score (gCO2e/MJ) | Feedstock Base |
|---|---|---|---|---|---|
| HEFA-SPK | D7566 Annex A2 | 50% | Commercial (TRL 9) | 8-14 | UCO, tallow, vegetable oils |
| FT-SPK | D7566 Annex A1 | 50% | Commercial (TRL 8-9) | 15-30 | MSW, biomass, natural gas |
| ATJ-SPK | D7566 Annex A5 | 50% | Demonstration (TRL 7-8) | 25-40 | Bioethanol, isobutanol |
| HFS-SIP | D7566 Annex A3 | 10% | Early Commercial (TRL 6-7) | 35-60 | Sugar crops |
| CH-SK / CHJ | D7566 Annex A6 | 50% | Demonstration (TRL 6-7) | 30-45 | Lipid co-processing |
| HC-HEFA-SPK | D7566 Annex A7 | 10% | Early Commercial (TRL 7-8) | 10-16 | Algae oils, high-FFA lipids |
| Co-processing | D1655 | 5% | Commercial (TRL 9) | Varies by feedstock | UCO/tallow in petroleum refining |
TRL = Technology Readiness Level. CI = Carbon Intensity (well-to-wake lifecycle). Blend limits per ASTM D7566/D1655 specifications. Co-processing under petroleum refining D1655 standard. Source: ICAO CORSIA, EASA, ASTM International, 2026.
Supply-Demand Balance: The Structural Deficit
The core constraint in the UCO-SAF value chain is physical: UCO is a byproduct of food consumption, not a purpose-grown crop. Its supply is therefore fundamentally bounded by population, dietary patterns, and the penetration of organized food service. Global UCO collection is estimated at 16-20 million tonnes per year, with significant regional disparities in collection infrastructure. Even under aggressive collection improvement scenarios, the upper bound of collectable UCO by 2030 is projected at 22-25 million tonnes per year — a volume that cannot scale with the exponential demand growth projected under SAF mandates.
Global UCO Collection by Region (Indicative, 2026)
| Region | Collection (Mt/yr) | Collection Rate | Theoretical Potential (Mt/yr) | Export Surplus |
|---|---|---|---|---|
| China & East Asia | 4.5-6.5 | 25-50% | 8-14 | High (2-3 Mt/yr exported to EU) |
| European Union (EU-27) | 3.0-4.0 | 45-65% | 5-7 | Net importer (2.5-3.5 Mt/yr) |
| North America | 3.5-5.0 | 35-55% | 6-9 | Moderate (domestic RD dominant) |
| Latin America | 1.5-2.5 | 20-40% | 4-7 | Growing export flows |
| South & Southeast Asia | 1.0-2.0 | 15-35% | 3-6 | Variable; domestic biodiesel growing |
| Middle East & North Africa | 0.8-1.5 | 15-30% | 2-5 | Limited; informal use dominant |
| Sub-Saharan Africa | 0.5-1.0 | 10-25% | 2-4 | Negligible; infrastructure constrained |
Collection rates estimated based on commercial food service penetration, organized waste collection infrastructure, and regulatory frameworks. Data synthesized from EASA, IEA Bioenergy, and Energy Solutions modeling.
SAF Demand vs UCO Supply Projection (Millions of tonnes)
| Year | Projected SAF Demand (Mt/yr) | Max UCO Collection (Mt/yr) | UCO-Derived SAF Potential (Mt/yr) | Supply Gap (Mt/yr) | UCO Coverage (%) |
|---|---|---|---|---|---|
| 2025 | 2-4 | 18 | 5-7 | -3 to +3 | 100%+ |
| 2027 | 8-12 | 20 | 7-9 | 1-3 | 58-88% |
| 2030 | 25-40 | 22 | 8-10 | 15-30 | 20-32% |
| 2035 | 60-120 | 25 | 9-12 | 48-108 | 8-15% |
| 2040 | 120-200 | 27 | 10-13 | 107-187 | 5-7% |
| 2050 | 250-400 | 30 | 11-14 | 236-386 | 3-4% |
SAF demand projections from IATA net-zero roadmaps, ICAO CORSIA scenarios, and ReFuelEU mandate schedules. UCO-derived SAF potential assumes 0.75 t SAF / t UCO yield at 60-70% allocation to aviation (remainder to renewable diesel). Supply gap = SAF demand minus UCO-derived SAF potential.
SAF Demand vs UCO-Derived Supply Projection (2024-2035)
Source: Energy Solutions SAF demand scenarios vs modeled UCO-based HEFA capacity. Indicative for analytical purposes.
Price Benchmarks & HEFA Economics
UCO prices have undergone a structural shift from the $300-500/t range (pre-2018, primarily soap/animal feed end-uses) to the $750-1,250/t range (2025-2026, driven by biofuel mandate competition). At these levels, UCO approaches price parity with some virgin vegetable oils, compressing the traditional feedstock cost advantage of the HEFA-UCO pathway. This section benchmarks UCO prices across regions, analyzes HEFA production economics, and assesses abatement costs under current policy conditions.
Indicative UCO Price Benchmarks by Region (Bulk Industrial Contracts, 2025-2026)
| Region | Typical UCO Price Range (USD/t) | Collection Rate (% of Theoretical Potential) | Primary End-Use |
|---|---|---|---|
| European Union (EU-27) | 850-1,250 | 45-65% | Biodiesel & HEFA SAF |
| North America | 750-1,100 | 35-55% | Biodiesel, Renewable Diesel, Emerging SAF |
| China & East Asia | 650-1,000 | 25-50% | Domestic biodiesel, exports to EU |
| Middle East & North Africa | 500-900 | 15-35% | Local biodiesel, informal uses |
| Latin America | 550-950 | 20-40% | Biodiesel blending, growing export flows |
All price and collection figures are indicative ranges based on aggregated 2024-2025 tender data, broker quotes, and Energy Solutions modeling. They do not represent binding commercial offers.
UCO Price Evolution vs Fossil Jet Fuel (Indicative, 2020-2026)
Source: Energy Solutions analysis of public price indices and broker assessments. Stylised for illustration.
Indicative HEFA SAF Production Cost Breakdown (UCO-Based vs Alternatives)
| Fuel Type | Feedstock Cost (USD/t) | Processing & Hydrogen (USD/t) | Total Production Cost (USD/t) | Approx. Cost per Litre (USD/L) |
|---|---|---|---|---|
| Fossil Jet A / A-1 | Crude-driven | Refining margin | 700-1,000 | 0.70-1.00 |
| HEFA SAF (UCO Feedstock) | 750-1,250 | 900-1,100 | 1,700-2,300 | 1.70-2.30 |
| HEFA SAF (Virgin Vegetable Oils) | 1,000-1,500 | 900-1,100 | 1,900-2,600 | 1.90-2.60 |
Indicative levelized production costs excluding distribution, airport fees, and taxes. Ranges reflect regional differences in feedstock and hydrogen pricing.
Indicative Abatement Cost Comparison (Well-to-Wake, 2026)
| Fuel Pathway | GHG Reduction vs Fossil Jet (%) | Cost Premium vs Fossil Jet (USD/t fuel) | Indicative Abatement Cost (USD/tCO2e) |
|---|---|---|---|
| HEFA SAF (UCO) | 70-90% | 1,000-1,600 | 180-350 |
| HEFA SAF (Vegetable Oils) | 50-70% | 1,200-1,900 | 260-480 |
| Fossil Jet + High-Quality Offsets | Offset-based | 40-100 | 40-100 |
Abatement costs are stylised and depend heavily on lifecycle accounting choices, carbon intensity baselines, and crediting frameworks.
Abatement Cost Comparison (Indicative, 2026)
Source: Energy Solutions abatement modeling. Stylised to illustrate relative positions.
Major HEFA SAF Producers
The HEFA-SPK producer landscape is characterized by high concentration. Three operators account for the dominant share of global UCO-based SAF capacity. Each represents a distinct strategic model: integrated multinational (Neste), pure-play SAF pioneer (World Energy), and downstream integration into feedstock collection (Darling Ingredients/Valero JV). Their respective positions reveal the strategic dimensions of feedstock security, technology maturity, and regulatory exposure that define the HEFA value chain.
Neste Oyj
World Energy
DGD / Darling-Valero
Case Studies
Case Study 1 — European Flag Carrier UCO-HEFA SAF Offtake
Context
- Location: EU hub airport with SAF blending mandate ramping towards 10% by 2030.
- Offtake Volume: 50 kt/year UCO-based HEFA SAF blendstock (equivalent to ~2-3% of jet fuel demand at the hub).
- Contract Type: 7-year offtake agreement with price indexed to fossil jet plus premium, partially hedged by policy incentives.
Economics (Indicative)
- Total HEFA SAF production cost: ~1,900 USD/t.
- Average fossil jet reference price over contract horizon: ~850 USD/t.
- Effective policy support (mandates, tax credits, certificates): 600-900 USD/t.
With policy support, the airline's incremental SAF cost falls into the 150-450 USD/t range, translating into a modest ticket price impact (below 2-5% on long-haul routes) while achieving 70-80% lifecycle GHG reduction for the SAF fraction. However, the airline remains exposed to UCO feedstock price spikes in tight markets.
Case Study 2 — Municipal UCO Collection Program Pivoting to SAF
Context
- Location: Mid-sized North American city (population 1-2 million).
- Existing Use: UCO collected and routed to a local biodiesel producer for municipal bus fleets.
- Policy Change: National SAF credit scheme introduced; regional refinery upgrades to HEFA capacity.
Indicative Volumes and Investment
- Theoretical UCO potential: 25-35 kt/year; current collection: ~12 kt/year.
- Additional collection infrastructure investment: $5-8 million USD (collection points, logistics, QA systems).
- Incremental value uplift from routing UCO to HEFA SAF instead of local biodiesel: 150-300 USD/t (before logistics).
The municipality faces an equity challenge: local bus fleets lose access to low-carbon biodiesel if UCO is redirected to SAF, potentially reverting to fossil diesel without compensating policies. Reallocating a constrained waste feedstock across sectors has distributional consequences beyond carbon accounting.
Case Study 3 — Neste 2025 Annual Report: Key Figures
Neste's 2025 annual results reveal the financial architecture of the world's largest HEFA SAF producer. Revenue reached €19,016 million with EBITDA of €1,683 million. The Renewable Products segment delivered comparable EBITDA of €1,013 million, driven by SAF sales volumes growth and improved margin capture. Neste reported 14.2 million tonnes of CO2 reduction from its renewable products in 2025. The company's global feedstock platform sources UCO and other waste/residue feedstocks from over 40 countries, representing one of the largest single-point feedstock aggregation systems in the bioeconomy. However, the concentration of EU SAF supply in a small number of operators raises competition and resilience questions for mandate compliance architecture.
Case Study 4 — EU Commission China Biofuel Fraud Investigation (18 July 2025)
On 18 July 2025, the European Commission concluded a formal investigation into potential fraud in Chinese biofuel imports, finding evidence that shipments labeled as "Used Cooking Oil" contained significant volumes of virgin palm oil and other non-waste feedstocks. The investigation, initiated following discrepancies between declared UCO export volumes from China and plausible UCO collection capacity, identified systematic documentation irregularities in certificates of origin and sustainability declarations. Key findings include:
- Chemical analysis (C-14 isotopic testing and fatty acid profiling) of sampled shipments confirmed that 20-30% of sampled cargoes were inconsistent with genuine UCO specifications.
- The Commission identified a commercial arbitrage of approximately $300-500/t between virgin palm oil prices and the premium attached to certified waste-based UCO under EU RED sustainability criteria.
- The investigation triggered immediate enforcement actions: enhanced border inspections, retrospective audits of ISCC-certified supply chains, and accelerated deployment of the Union Database (UDB) for Biofuels, which launched November 2024.
- Policy implications include potential exclusion of certain Chinese exporters from EU sustainability certification schemes and a Commission review of double-counting provisions for waste-based feedstocks.
Feedstock Fraud & Traceability Architecture
The premium attached to certified waste-based UCO — typically $200-500/t above virgin vegetable oil prices in regulated markets — creates a structural incentive for fraud. Three primary fraud modalities have been documented across the UCO supply chain: virgin oil blending (mixing palm or soybean oil with genuine UCO to increase volumes while retaining waste-based certification), false documentation (fabricating collection records and certificates of origin), and double-selling (claiming the same physical UCO volumes under multiple jurisdictions' sustainability schemes).
Union Database (UDB) for Biofuels
The European Commission launched the Union Database for Biofuels (UDB) in November 2024 as the central digital traceability platform under the revised Renewable Energy Directive (RED III). The UDB requires all economic operators in the biofuels supply chain — from UCO collection points to fuel suppliers — to register transactions digitally, creating an auditable chain of custody from feedstock origin to final fuel consumption. As of mid-2026, the UDB encompasses approximately 31,000 registered operators across the EU and third-country supply chains.
The EU-China UCO Dependency: A Regulatory Architecture Built on a Compromised Supply Chain
The EU's HEFA-SAF capacity is structurally dependent on Chinese UCO imports, which supply an estimated 50-70% of total EU UCO imports (2.5-3.5 million tonnes per year). This dependency creates a geopolitical vulnerability that the Union Database does not resolve: digital traceability can verify the documentation trail of a shipment, but it cannot verify the physical origin of the lipids if fraudulent activity occurs upstream of the first registered data point. The fundamental asymmetry — China possesses surplus UCO collection capacity while the EU possesses the mandate-driven demand — creates a bilateral dependency that neither jurisdiction can independently resolve. A disruption to this trade corridor (through Chinese export restrictions, EU import bans, or geopolitical friction) would immediately render ReFuelEU compliance targets unattainable.
Key traceability solutions deployed and emerging in the UCO-SAF supply chain include:
- ISCC Certification: The ISCC EU and ISCC CORSIA standards provide voluntary sustainability certification with mass balance or segregated chain-of-custody options. However, the EU Commission investigation revealed systematic weaknesses in ISCC audit coverage of non-EU supply chains.
- Mass Balance Accounting: Allows mixing of certified and non-certified feedstocks with proportional attribution. While enabling supply chain efficiency, it creates accounting complexity that can mask fraudulent feedstock introduction if physical segregation is not maintained.
- Isotopic Testing (C-14): Radiocarbon analysis (ASTM D6866) distinguishes biogenic (waste/virgin oil) from fossil carbon but cannot differentiate between used and virgin biogenic oils. Fatty acid profiling and contaminant fingerprinting provide supplementary forensic tools.
- Blockchain Pilots: Several industry consortia (including Shell-Avelia, Neste-ISCC blockchain pilots) are testing distributed ledger systems for immutable transaction records. While promising for audit integrity, blockchain does not address the physical verification gap.
Regulatory Architecture: Global SAF Mandates
SAF deployment is fundamentally policy-driven. Without blending mandates, tax credits, and certificate schemes, the $1,700-2,300/t cost of UCO-based HEFA SAF (versus $700-1,000/t for fossil jet) would render the pathway commercially non-viable. This section maps the regulatory architecture across major aviation markets and identifies the structural tensions between mandate ambition and feedstock availability.
European Union: ReFuelEU Aviation
ReFuelEU SAF Blending Mandate Schedule
| Year | SAF Minimum Share | Of Which: Synthetic Fuels (e-Fuels) | Estimated SAF Volume (Mt/yr) |
|---|---|---|---|
| 2025 | 2% | — | ~1.5 |
| 2030 | 6% | 0.7% | ~5-6 |
| 2035 | 20% | 5% | ~18-20 |
| 2040 | 34% | 10% | ~30-35 |
| 2045 | 42% | 15% | ~38-42 |
| 2050 | 70% | 35% | ~60-70 |
ReFuelEU Aviation Regulation (EU 2023/2405). SAF shares apply to all flights departing EU airports. Synthetic fuel sub-mandates apply from 2030. Volume estimates based on projected EU aviation fuel demand of ~90-100 Mt/yr by 2050.
United States: IRA Section 45Z and State-Level Programs
State-level LCFS programs in California, Oregon, and Washington provide additional credit stacking, while the SAF Grand Challenge (DOE/DOT/USDA) targets 3 billion gallons (~9 Mt) of domestic SAF production by 2030 and 35 billion gallons (~105 Mt) by 2050.
Global Mandate Comparison
Global SAF Mandate Architecture Comparison (2026)
| Jurisdiction | Instrument | 2025-2026 | 2030 Target | 2050 Target | Key Feature |
|---|---|---|---|---|---|
| EU | ReFuelEU Aviation (mandate) | 2% | 6% + 0.7% e-fuels | 70% + 35% e-fuels | Binding targets + e-fuel sub-mandates |
| US | IRA 45Z + RFS (incentive) | Voluntary | 3B gal target (~9 Mt) | 35B gal target (~105 Mt) | Tax credit + RINs; no blending mandate |
| UK | SAF Mandate (mandate) | 2% | 10% | ~60% (projected) | Mandate + buy-out mechanism |
| Japan | SAF Roadmap (voluntary) | — | 10% (target) | 100% (aspirational) | Voluntary target; policy developing |
| Singapore | SAF Target (mandate, from 2026) | 1% (from 2026) | 3-5% (target) | TBD | Emerging mandate framework |
| ICAO CORSIA | Offsetting scheme | Voluntary phase | Mandatory from 2027 | Carbon-neutral growth | Global offsetting, not SAF mandate |
Mandate schedules subject to legislative revision. US SAF volumes are targets, not binding mandates. UK targets projected beyond 2030 based on Jet Zero Strategy trajectory. Japan and Singapore targets are indicative policy goals. CORSIA = Carbon Offsetting and Reduction Scheme for International Aviation.
Risk Matrix: UCO-SAF Structural Vulnerabilities
The following risk assessment evaluates the key structural vulnerabilities facing the UCO-based HEFA SAF value chain through 2035. Severity ratings reflect both probability of occurrence and magnitude of impact on SAF mandate compliance, project economics, and supply chain integrity.
Feedstock Scarcity
Global UCO collection (16-20 Mt/yr) cannot grow linearly with SAF mandate demand (40 Mt/yr by 2030). The deficit becomes binding by 2028-2030, triggering price escalation and competition between aviation and road transport. Projects relying on uncontracted spot UCO face acute margin compression.
HEFA Monoculture
85% single-pathway dependency creates systemic concentration risk. A regulatory change affecting HEFA feedstock eligibility, a hydrogen supply disruption, or a technology breakthrough in competing pathways could strand HEFA assets representing billions in capital investment.
Feedstock Fraud
20-30% estimated mislabeling rate in UCO imports compromises environmental integrity of SAF compliance claims. UDB provides digital traceability but cannot resolve the physical verification gap. Retrospective audits may invalidate past SAF credit claims, exposing offtakers to regulatory penalties.
China-EU Geopolitical Exposure
50-70% of EU UCO imports originate from China, creating a bilateral dependency that neither side can unilaterally resolve. Trade disruption (tariffs, export restrictions, sanctions) would immediately render ReFuelEU compliance unattainable. Chinese domestic SAF policy development adds uncertainty to export availability.
Regulatory Fragmentation
Divergent SAF mandates (EU mandate vs. US incentives vs. Asia-Pacific targets) create regulatory arbitrage opportunities and compliance complexity. Differing sustainability criteria and carbon accounting methodologies across jurisdictions complicate cross-border SAF trading and credit recognition.
Technology Lock-in
Large HEFA capacity investments ($500M-$1.5B per facility) create 20-30 year asset lives, while alternative SAF pathways (ATJ, PtL) are projected to reach cost parity by 2035-2040. Early HEFA investors risk stranded assets if policy support shifts toward e-fuels or if non-lipid pathways achieve cost breakthroughs.
Interactive Tool: SAF Production Economics Simulator
This interactive simulator models the production economics of a UCO-based HEFA-SAF facility. Adjust the six input parameters to stress-test project viability under different market and policy scenarios. All outputs update dynamically.
Production Economics Output
Supply Outlook to 2030/2035
By 2030, Energy Solutions projects UCO positioned as a premium, niche SAF feedstock rather than a mass-market solution. Its primary strategic role will be as a bridge feedstock providing high-certainty, high-GHG-reduction SAF volumes for early mandate compliance, while the SAF industry transitions toward more scalable pathways.
- Bridge feedstock function: UCO-based HEFA SAF provides immediate, certified GHG reductions (70-90%) using existing technology and infrastructure. This enables airlines and fuel suppliers to comply with early mandate thresholds while ATJ and PtL pathways mature toward commercial scale.
- Competition intensification: As SAF mandates escalate, competition between biodiesel, renewable diesel, and SAF producers for limited UCO volumes will intensify. Road transport biofuels currently consume an estimated 60-70% of global UCO, and this sector's decarbonization trajectory will directly impact aviation's access to UCO feedstock.
- Diversification imperative: The structural UCO supply deficit makes diversification into non-lipid pathways (ATJ, FT, PtL) an existential requirement for SAF mandate compliance, not a strategic option. Integrated planning must account for the feedstock ceiling and allocate UCO to its highest-value application: early compliance for first-mover airlines and HEFA facilities co-producing bio-LPG from HVO/HEFA plants, integrated biorefineries that co-produce fuels, heat and chemicals, and advanced alcohol routes such as cellulose ethanol projects feeding into SAF or chemical value chains.
Beyond 2035, as ATJ and PtL pathways mature and electricity-driven e-fuels potentially decline in cost, UCO's strategic importance will shift from baseline volume provision toward balancing and niche applications. The winning strategies will treat UCO as one element in an integrated feedstock and technology roadmap, not as a single solution to aviation decarbonization.
Intelligence Takeaways
Monoculture Risk: The HEFA monoculture (85% market share) creates an unacceptable single-point-of-failure architecture for global aviation decarbonization. A feedstock supply disruption, regulatory reclassification, or technology breakthrough in competing pathways could simultaneously strand billions in HEFA capital investment and disrupt SAF compliance across multiple jurisdictions. Diversification into ATJ and PtL is an existential requirement, not an option.
Geopolitical Vulnerability: The EU's structural dependency on Chinese UCO imports (50-70% of imports) creates a geopolitical vulnerability with no near-term resolution pathway. The Union Database provides digital traceability but does not alter the physical geography of feedstock supply. A disruption to the China-EU UCO trade corridor would render ReFuelEU compliance targets immediately unattainable, with no alternative feedstock source capable of filling the gap at comparable cost or volume.
Mandate Realism: Current SAF mandate trajectories function as aspirational policy signals, not physically achievable production quotas. The gap between regulatory ambition and physical feedstock availability widens through 2030-2035 unless non-UCO pathways achieve commercial scale at rates exceeding current deployment projections. Policymakers and investors should distinguish between announced SAF targets (which assume feedstock abundance) and operational SAF capacity (which is fundamentally feedstock-constrained).
Frequently Asked Questions
What is the HEFA pathway and why does it dominate SAF production?
How much of future SAF demand can realistically be met with UCO?
What is the ReFuelEU Aviation mandate and how does it work?
What did the EU Commission find in its China biofuel fraud investigation?
What are the key risks of the HEFA monoculture in SAF production?
What indicative abatement cost does UCO-based SAF deliver today?
Why has UCO become so valuable compared with a decade ago?
What is the Union Database (UDB) and can it solve the fraud problem?
Should investors build SAF strategies around UCO as a core feedstock?
Methodology & References
Methodology Note
All numerical values in this intelligence brief are indicative and stylised for analytical purposes. Price and volume ranges draw on a combination of public statistics, broker quotes, disclosed project data, and Energy Solutions modeling. Lifecycle emissions and abatement costs are estimated using typical well-to-wake boundaries, with sensitivity to allocation methods and regional grid intensities. Nothing in this report should be interpreted as a binding commercial offer or as investment advice. Projections beyond 2030 incorporate increasing uncertainty and should be interpreted as scenario analysis, not forecasts. "Projected," "estimated," and "assuming" denote modeled values based on stated assumptions.
References
- EASA — Sustainable Aviation Fuels (SAF), European Union Aviation Safety Agency, 2026.
- ICAO — CORSIA: Carbon Offsetting and Reduction Scheme for International Aviation, International Civil Aviation Organization, 2026.
- IEA — Renewables 2025: Analysis and Forecast to 2030, International Energy Agency, 2025.
- Neste Annual Report 2025, Neste Oyj, February 2026. Revenue €19,016M, EBITDA €1,683M, CO2 reduction 14.2 Mt.
- Alternative Fuels Data Center — Sustainable Aviation Fuel, U.S. Department of Energy, 2026.
- Regulation (EU) 2023/2405 (ReFuelEU Aviation), Official Journal of the European Union, October 2023.
- Union Database for Biofuels (UDB), European Commission DG Energy, launched November 2024.
- EU Commission Investigation: Chinese Biofuel Import Fraud, European Commission, 18 July 2025.
- ISCC System — International Sustainability and Carbon Certification, ISCC, 2026.
- ASTM D7566 — Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons, ASTM International, 2023.
- IATA — Sustainable Aviation Fuel (SAF), International Air Transport Association, 2026.
- IEA Bioenergy Task 39: Commercializing Conventional and Advanced Liquid Biofuels, IEA Bioenergy, 2025.
- U.S. DOE — Sustainable Aviation Fuels, Bioenergy Technologies Office, 2026.
- NREL — Bioenergy Research: Sustainable Aviation Fuel Analysis, National Renewable Energy Laboratory, 2026.
- Inflation Reduction Act of 2022 (Section 45Z Clean Fuel Production Credit), U.S. Congress, Public Law 117-169.
- UK Jet Zero Strategy: Delivering Net Zero Aviation by 2050, UK Department for Transport, July 2022 (updated 2025).
- SkyTeam — The Sustainable Flight Challenge, SkyTeam Alliance, 2026.