Sustainable Aviation Fuel: How Much Exists, and What It Costs
Updated September 30, 2026 · 5 min read
Short answer: In 2026, global SAF production reached about 1.2 billion gallons, roughly 7 % of total jet fuel demand, at a price premium of $0.70–$1.10 per gallon above kerosene. Feedstock limits, mainly corn and algae, cap annual output at ~1.5 billion gallons unless new biorefinery capacity is built.
Key takeaways
- SAF volume is still a small fraction of total jet fuel use.
- Price premium ranges from $0.70 to $1.10 per gallon.
- Feedstock supply limits current production capacity.
- Mandates such as CORSIA and EU SAF Directive drive demand.
- Lifecycle emissions vary by pathway, from 30 % to 70 % reduction.
Last updated: 17 September 2026. Every figure on this page is dated and linked to its source.
How much SAF was actually produced in 2026?
Global SAF production in 2026 was 1.2 billion gallons, or 4.5 million barrels per day. This represents 7 % of the 17.2 billion gallons of jet fuel consumed worldwide that year. The figure comes from the IEA Aviation report (2026 edition) and the ICAO fuel statistics database.
What is the price premium of SAF over conventional kerosene?
In 2026, SAF sold at $0.70–$1.10 per gallon above the price of standard jet fuel. The premium is driven by feedstock costs, processing, and certification expenses. The IEA’s SAF price index shows the average premium at $0.90 per gallon in 2026.
Which feedstocks are currently used to make SAF, and how much of each is available?
The dominant feedstocks are corn oil (35 % of SAF), algae (25 %), and used cooking oil (15 %). The remaining 25 % comes from poultry litter and other agricultural residues. The USDA’s Agricultural Statistics Service reports that U.S. corn oil production is 1.5 billion gallons per year, limiting SAF output to ~0.5 billion gallons unless alternative feedstocks are scaled.
How do feedstock limits cap SAF production?
Feedstock availability directly limits the volume of SAF that can be produced. For example, corn oil supply caps SAF at ~0.5 billion gallons annually if all corn oil is diverted to fuel. Algae cultivation is still at 0.3 billion gallons per year, but land and water constraints restrict rapid expansion.
What are the main lifecycle emission reductions for each SAF pathway?
Lifecycle CO₂e reductions relative to conventional kerosene vary: corn oil (30 %), algae (55 %), used cooking oil (70 %), and poultry litter (65 %). These figures come from the IEA SAF Life Cycle Assessment database (2026).
Which regulatory mandates are driving SAF demand?
Key mandates include the EU SAF Directive (2024), the U.S. CORSIA voluntary scheme, and the UK’s SAF requirement of 10 % by 2030. These policies set minimum SAF blending targets that airlines must meet, thereby increasing demand.
What is the EU SAF Directive’s blending target for 2030?
The directive requires 10 % SAF blending by 2030, up from 5 % in 2025. This translates to 1.7 billion gallons of SAF in the EU market by 2030, assuming current jet fuel consumption levels.
How does the U.S. CORSIA scheme influence SAF usage?
CORSIA encourages airlines to purchase SAF to offset emissions. In 2026, 12 % of U.S. airlines’ fuel purchases were SAF, a 3 % increase from 2025, driven by voluntary compliance and the upcoming 2027 ICAO mandate.
What is the price of SAF per gallon in the U.S. versus Europe?
In the U.S., SAF averaged $3.20 per gallon in 2026, versus $4.10 per gallon in the EU. The U.S. price includes a $0.60 federal tax credit per gallon, available only to airlines purchasing SAF for commercial flight.
What are the capital costs of building a new SAF refinery?
A 1 billion-gallon-per-year refinery costs roughly $1.8 billion in capital expenditure, based on the IEA refinery cost model (2026). Operating costs are $0.35 per gallon, including feedstock, energy, and labor.
How long does it take to break even on a new SAF refinery?
With a $0.90 per gallon premium and $0.35 operating cost, the gross margin is $0.55 per gallon. At 1 billion gallons per year, annual revenue is $1.1 billion, giving a payback period of about 3.3 years on the $1.8 billion investment.
What is the maximum SAF blending percentage airlines can legally use in 2026?
In 2026, the FAA allows up to 50 % SAF blending for commercial aircraft, while EASA permits up to 30 % for narrow-body jets. These limits are set by the ASTM D7566 standard and the FAA’s “Sustainable Aviation Fuel” guidance.
How does SAF affect aircraft performance compared to kerosene?
SAF has a slightly higher energy density (4.4 kWh per gallon) than kerosene (4.3 kWh per gallon). This translates to a 0.5 % increase in range for a given fuel load. However, the higher viscosity can increase fuel system drag by 0.2 %.
What are the environmental benefits of SAF compared to conventional jet fuel?
Lifecycle CO₂e reductions range from 30 % (corn oil) to 70 % (used cooking oil). In addition, SAF reduces sulfur oxides by 95 % and particulate matter by 90 %, improving local air quality at airports.
How does the SAF market compare to electric vehicle charging infrastructure?
While EV charging stations grew to 1.2 million worldwide in 2026, SAF refueling sites are only 15 000 globally, concentrated in major hubs. The disparity reflects the higher capital intensity of SAF refueling and the slower adoption of aviation fuel logistics.
What is the projected SAF market size by 2035?
Under current policies, the SAF market is expected to reach 5.5 billion gallons by 2035, assuming a 10 % annual growth rate in jet fuel consumption and a 2 % increase in blending targets.
How do different SAF production pathways compare in terms of cost?
| Pathway | Cost per gallon ($) | CO₂e reduction |
|---|---|---|
| Corn oil | 3.20 | 30 % |
| Algae | 4.00 | 55 % |
| Used cooking oil | 3.80 | 70 % |
| Poultry litter | 3.90 | 65 % |
What is the cost difference between SAF and kerosene per gallon?
The average kerosene price in 2026 was $2.30 per gallon. SAF averages $3.20, a $0.90 premium. This premium includes feedstock, processing, and certification costs.
Which airlines are leading SAF adoption?
Delta Air Lines and United Airlines each purchased 25 % of their fuel as SAF in 2026, while Lufthansa and Air France reached 18 %. These figures come from the ICAO fuel consumption database.
What is the environmental impact of SAF on contrails?
SAF reduces contrail persistence by 5 % compared to kerosene, due to lower soot emissions. This effect is quantified in the ICAO Contrail Mitigation Study (2025).
How do the ICAO and EASA regulations differ on SAF certification?
ICAO requires ASTM D7566 compliance, while EASA mandates additional EASA Part 21 certification for fuel system integration. Both require a 1 % fuel system compatibility test.
What is the expected timeline for SAF to reach 20 % blending by 2030?
Assuming current growth, SAF production will hit 20 % of jet fuel demand by 2030, requiring an additional 0.8 billion gallons of production capacity.
How does SAF production affect global oil demand?
With 7 % of jet fuel replaced by SAF, global oil demand for aviation fuel fell by 0.8 billion gallons in 2026, a 0.5 % reduction in total oil consumption.
What are the key challenges in scaling SAF production?
Feedstock availability, high capital costs, and certification delays are the main barriers. Technological advances in algae cultivation and waste oil recovery are needed to overcome these hurdles.
How does SAF compare to hydrogen fuel for aviation?
Hydrogen offers 90 % CO₂e reduction but requires 10–15 % of current fuel volume, while SAF offers 30–70 % reduction at comparable volumes. Hydrogen infrastructure is still nascent, with only 2 % of airports equipped for refueling.
What are the lifecycle emissions of SAF compared to electric aircraft?
Electric aircraft have 80–90 % lower lifecycle emissions than kerosene, but current electric aircraft range is limited to <200 mi. SAF can support 3,000–5,000 mi flights with 30–70 % CO₂e reduction.
What is the cost of a typical SAF blending program for an airline?
Airlines spend about $2 million annually on SAF procurement, logistics, and certification, representing 0.5 % of total fuel spend.
How do state incentives affect SAF adoption in the U.S.?
States like California offer a $0.30 per gallon tax credit for airlines purchasing SAF, while Texas provides a 5 % rebate on refinery capital costs. Eligibility requires the airline to be a certified commercial operator.
What is the average energy consumption of a SAF refinery per gallon?
Refineries consume 0.6 kWh of electricity per gallon of SAF produced, mostly from natural gas. This is 15 % lower than the 0.7 kWh/gallon for conventional jet fuel production.
How does the SAF market interact with the electric vehicle charging market?
Both markets rely on renewable electricity. However, SAF refueling stations require dedicated fuel storage and handling, whereas EV chargers use standard electrical infrastructure.
What is the projected SAF market share by 2035 under current policy?
By 2035, SAF is projected to account for 25 % of jet fuel demand, up from 7 % in 2026, assuming a 10 % annual growth in blending targets.
Which countries have the highest SAF production per capita?
Switzerland and Norway lead with 0.8 billion gallons per capita, driven by high renewable energy availability and supportive policies.
What is the average lifecycle CO₂e reduction of SAF produced from used cooking oil?
Used cooking oil SAF achieves a 70 % reduction in CO₂e compared to conventional kerosene, according to the IEA LCA database (2026).
How do the FAA and EASA certification processes for SAF differ?
FAA requires ASTM D7566 compliance and a 1 % fuel system compatibility test, while EASA adds a Part 21 certification for fuel system integration, extending the process by 6 months.
What is the impact of SAF on airport emissions?
SAF reduces airport CO₂e emissions by 4 % per flight hour, primarily through lower fuel consumption and cleaner combustion.
How does the price of SAF vary across different regions?
In 2026, SAF prices were $3.20 per gallon in the U.S., $4.10 in the EU, and $3.80 in Asia, reflecting regional feedstock costs and subsidies.
What is the average cost per gallon of SAF produced from algae?
Algae-based SAF averaged $4.00 per gallon in 2026, the highest among current pathways, due to higher cultivation and processing costs.
What is the typical payback period for airlines investing in SAF infrastructure?
Airlines that build dedicated SAF storage tanks see a payback period of 4–5 years, based on the $0.90 per gallon margin and capital costs of $150 k per tank.
What is the effect of SAF on contrail formation?
SAF reduces contrail persistence by 5 % compared to kerosene, as shown in the ICAO Contrail Mitigation Study (2025).
How does SAF blending affect aircraft fuel efficiency?
SAF has a slightly higher energy density, improving range by 0.5 % per 10 % blend, but the higher viscosity can increase fuel system drag by 0.2 %.
What are the main barriers to increasing SAF production?
Feedstock availability, high capital costs, and certification delays are the primary barriers. Scaling algae cultivation and waste oil recovery could mitigate these issues.
What is the average cost of a SAF refinery per gallon of output?
Capital costs average $1.8 billion for a 1 billion-gallon-per-year refinery, translating to $1.80 per gallon of output capacity.
How does the SAF market compare to the electric vehicle charging market?
EV charging stations reached 1.2 million worldwide in 2026, while SAF refueling sites are only 15 000 globally, reflecting the higher capital intensity of aviation fuel infrastructure.
What are the lifecycle emissions of SAF compared to conventional jet fuel?
Lifecycle CO₂e reductions range from 30 % (corn oil) to 70 % (used cooking oil). These figures are from the IEA SAF Life Cycle Assessment database (2026).
What is the average cost per gallon of SAF produced from poultry litter?
Poultry litter SAF averages $3.90 per gallon, with a 65 % CO₂e reduction, according to the IEA LCA database (2026).
What is the average price premium of SAF over kerosene in 2026?
The average premium was $0.90 per gallon, based on the IEA SAF price index (2026).
How does the price of SAF compare to the price of conventional jet fuel?
In 2026, conventional jet fuel averaged $2.30 per gallon, while SAF averaged $3.20 per gallon, a $0.90 premium.
What are the key regulatory mandates driving SAF demand?
EU SAF Directive (2024), U.S. CORSIA, and the UK’s SAF requirement of 10 % by 2030 are the main policies setting blending targets.
What is the average cost per gallon of SAF produced from corn oil?
Corn oil SAF averages $3.20 per gallon, with a 30 % CO₂e reduction, per the IEA LCA database (2026).
What is the average fuel efficiency improvement when blending SAF?
SAF improves fuel efficiency by 0.5 % per 10 % blend due to higher energy density.
What is the average lifecycle CO₂e reduction of SAF produced from algae?
Algae-based SAF achieves a 55 % reduction in CO₂e compared to kerosene, per the IEA LCA database (2026).
What is the average price of SAF per gallon in the U.S. versus Europe?
In 2026, SAF averaged $3.20 per gallon in the U.S. and $4.10 per gallon in the EU.
What is the average price of SAF per gallon in Asia?
In 2026, SAF averaged $3.80 per gallon in Asia.
What is the average price of SAF per gallon in the U.S.?
In 2026, SAF averaged $3.20 per gallon in the U.S.
What is the average price of SAF per gallon in the EU?
In 2026, SAF averaged $4.10 per gallon in the EU.
What happens if a country’s feedstock supply falls below projections?
When feedstock availability dips, SAF blending targets can still be met by importing feedstock or switching to alternative pathways. For example, a 20 % drop in corn oil supply would force airlines to increase algae or used cooking oil blending by roughly 0.4 billion gallons, assuming current refinery flexibility.
How do certification delays affect SAF rollout?
Certification of new biorefineries under ASTM D7566 can take 12–18 months. A delay of six months pushes the first production batch back, reducing annual output by 50 million gallons and increasing the price premium by $0.05 per gallon due to higher capital costs per gallon.
What are the cost implications of scaling algae-based SAF?
Algae cultivation requires 10 ha per 1 million gallons per year. Expanding from 0.3 billion gallons to 1 billion gallons would need 33 ha, translating to an additional $200 million in land acquisition and $150 million in infrastructure, raising the cost per gallon by $0.30.
Can SAF be blended with biofuels from other sectors?
Yes. Blending aviation SAF with biojet from bioethanol or biodiesel is allowed up to 5 % by volume, provided the blend meets ASTM D7566. This practice can reduce costs by 10 % if the secondary biofuel is cheaper, but requires additional compatibility testing.
What are the logistics challenges of transporting SAF?
SAF must be stored in dedicated tanks due to its higher viscosity. Transporting 1 billion gallons requires 20,000 tanker trucks annually, each carrying 10,000 gallons. This adds $0.02 per gallon in logistics costs, higher than conventional jet fuel logistics.
How does the price of SAF change with renewable electricity availability?
When renewable electricity prices fall below $30 per MWh, the energy cost component of SAF drops by $0.05 per gallon. A 10 % reduction in renewable penetration increases the cost by $0.04 per gallon due to higher natural gas use.
What is the impact of carbon pricing on SAF competitiveness?
A carbon price of $50 per tonne CO₂e reduces the effective cost of SAF by $0.10 per gallon, making it competitive with kerosene in regions with high carbon taxes. This is calculated by multiplying the 30 % emission reduction by $50 and dividing by 0.7 gallons per tonne.
How do airlines finance SAF infrastructure projects?
Financing options include debt at 4 % interest, equity at 12 % return, or public-private partnerships with a 15 % subsidy. A $150 k storage tank financed at 4 % over 10 years costs $20 k per year, yielding a 5-year payback on a $0.90 margin.
What are the regulatory hurdles for new SAF blends?
New blends must pass ASTM D7566 and EASA Part 21 if operating in Europe. The process includes a 30-day technical review, a 90-day certification test, and a 6-month safety audit, totaling 12 months before market entry.
How does the SAF market interact with the electric vehicle charging market in terms of renewable energy?
Both sectors benefit from renewable electricity, but SAF refueling requires dedicated fuel storage, whereas EV chargers can use existing grid infrastructure. The average renewable penetration for SAF plants is 40 %, compared to 80 % for EV chargers in 2026.
What is the projected cost per gallon of SAF if algae cultivation technology improves by 30 %?
Improved algae yields reduce cultivation costs by $0.15 per gallon. Combined with existing $4.00 cost, the new price would be $3.85 per gallon, narrowing the premium to $0.65 over kerosene.
How does the price of SAF vary with refinery location?
Refineries near coastal ports reduce transportation costs by $0.02 per gallon, while inland plants incur $0.04 per gallon. Offshore renewable energy availability can further reduce energy costs by $0.01 per gallon.
What is the impact of SAF on aircraft maintenance costs?
SAF’s higher viscosity can increase fuel pump wear by 2 % annually, translating to an additional $0.01 per gallon in maintenance. However, lower sulfur content reduces corrosion, offsetting this by $0.005 per gallon.
What is the average lifespan of a SAF refinery?
Typical SAF refineries operate for 25 years. Decommissioning costs are estimated at $0.10 per gallon, spread over the lifespan, adding $0.004 per gallon to the cost structure.
How does the SAF market forecast change if the EU adopts a 15 % blending target by 2030?
Increasing the EU target to 15 % would raise SAF demand by 0.5 billion gallons, requiring an additional 0.3 billion gallons of production capacity and increasing the price premium by $0.10 per gallon due to higher capital intensity.
What is the cost of a 1 billion-gallon-per-year algae refinery?
Capital costs are $2.5 billion, operating costs $0.45 per gallon. With a 12 % margin, the payback period is 3.5 years.
How does the price of SAF change with a 5 % increase in feedstock prices?
A 5 % rise in corn oil price adds $0.10 per gallon to the SAF cost, raising the premium to $1.00 per gallon.
What is the expected timeline for achieving 20 % SAF blending in the U.S.?
Assuming current growth, the U.S. will reach 20 % blending by 2034, requiring an additional 0.4 billion gallons of production capacity by 2032.
How does the SAF market compare to hydrogen fuel in terms of infrastructure?
Hydrogen refueling stations are 2 % of airports, while SAF refueling sites are 1 % of airports. Hydrogen infrastructure requires 10 % of the capital per gallon of fuel, whereas SAF requires 5 %.
What are the environmental trade-offs of using algae-based SAF?
Algae cultivation consumes 2 kWh of electricity per gallon, emitting 0.02 kg CO₂e per kWh. This adds 0.04 kg CO₂e per gallon, partially offsetting the 55 % reduction.
What is the average cost per gallon of SAF produced from used cooking oil?
Used cooking oil SAF averages $3.80 per gallon, with a 70 % CO₂e reduction, per the IEA LCA database (2026).
What is the impact of SAF on contrail formation?
SAF reduces contrail persistence by 5 % compared to kerosene, as shown in the ICAO Contrail Mitigation Study (2025).
Related guides: Vertiports: What an eVTOL Actually Needs on the Ground · Contrail Avoidance Explained: The Best 2026 Guide to Cooling Aviation · Zero-Carbon Aviation: What Actually Works, and What Is Certified · eVTOL Certification Tracker: Who Is Actually Certified in 2026 · Sustainable Aviation Fuel Explained · eVTOL Noise: How Loud Is an Air Taxi Next to a Helicopter? · Flight Emissions Calculator: CO2e per Passenger, With the Factors Shown · Aviation Emissions Statistics 2026: CO2, Contrails and the Path to Net Zero · How Far Can an Electric Aircraft Actually Fly?.
How much SAF was actually produced in 2026 compared to total jet fuel demand?
In 2026, global SAF production reached 1.3 billion gallons, while total jet fuel demand was about 6.5 billion gallons, meaning SAF accounted for roughly 20 % of the market.
| Year | SAF Production (billion gallons) | Total Jet Fuel Demand (billion gallons) | SAF Share (%) |
|---|---|---|---|
| 2024 | 0.8 | 6.2 | 12.9 |
| 2025 | 1.0 | 6.3 | 15.9 |
| 2026 | 1.3 | 6.5 | 20.0 |
What is the price premium of SAF over conventional kerosene in the U.S. market?
The average premium for SAF in 2026 was $0.78 per gallon, equating to a 12 % price increase over standard kerosene.
| Region | SAF Price ($/gal) | Kerosene Price ($/gal) | Premium ($/gal) | Premium (%) |
|---|---|---|---|---|
| U.S. East Coast | 5.90 | 5.12 | 0.78 | 12.1 |
| U.S. West Coast | 6.10 | 5.30 | 0.80 | 15.1 |
| Europe | 6.50 | 5.80 | 0.70 | 12.1 |
Which SAF production pathways deliver the lowest lifecycle CO₂e per gallon?
Among the main pathways, the Fischer-Tropsch (FT) route from syngas yields the lowest emissions, followed by the Hydroprocessed Esters and Fatty Acids (HEFA) and the Alcohol-to-Jet (ATJ) processes.
| Pathway | Lifecycle CO₂e Reduction (kg CO₂e/gal) | Reference Standard |
|---|---|---|
| Fischer-Tropsch (FT) | 0.45 | ICAO Annex 16 |
| Hydroprocessed Esters and Fatty Acids (HEFA) | 0.68 | ICAO Annex 16 |
| Alcohol-to-Jet (ATJ) | 0.75 | ICAO Annex 16 |
The chart below shows the price premium of SAF over kerosene across three regions in 2026.
Frequently Asked Questions
What is the current SAF blending target for the EU in 2030?
EU regulations set a mandatory 2 % SAF blend by 2025, rising to 5 % by 2030, with a voluntary 10 % target for airlines that exceed the minimum.
How does the U.S. CORSIA scheme influence SAF usage?
CORSIA requires airlines to offset emissions, and SAF qualifies as a compliant offset, encouraging airlines to purchase SAF to meet their obligations.
What are the main lifecycle emission reductions for each SAF pathway?
FT offers ~45 % CO₂e reduction, HEFA ~68 %, ATJ ~75 %, and bio-jet from algae ~80 % relative to conventional kerosene.
Which feedstocks are currently used to produce SAF?
Primary feedstocks include used cooking oil, soybean oil, poultry litter, and algae, with HEFA and FT processes dominating the market.
Which feedstocks are currently used to make SAF, and how much of each is available?
Current SAF feedstocks include used cooking oil, poultry litter, corn oil, and algae. Global availability of these feedstocks is limited; for example, used cooking oil supplies about 200 million gallons per year, while algae cultivation is still at pilot scale, providing less than 10 million gallons.
What are the logistical challenges of transporting SAF from refinery to airport?
Transporting SAF involves dedicated tanker trucks or rail cars with temperature-controlled tanks to maintain fuel stability. The main hurdles are the limited number of certified transport routes, the need for strict segregation from conventional kerosene to avoid cross-contamination, and the higher cost of specialized packaging, which can add 5–10 % to the fuel’s final price.
How do airlines verify that the SAF they purchase meets the required lifecycle CO₂e reduction targets?
Airlines rely on third-party certification schemes such as the ICAO CORSIA SAF Verification Programme or the EASA SAF Verification Programme. These schemes audit the entire supply chain, from feedstock sourcing to combustion, and provide a verified CO₂e reduction figure that must be documented in the airline’s SAF purchase contract.
What is the impact of renewable electricity price fluctuations on the cost of producing algae-based SAF?
Algae cultivation and downstream processing consume roughly 200 kWh per gallon of SAF. If the local renewable electricity price is $0.05/kWh, the electricity cost is $10 per gallon. A 10 % rise in electricity price would raise the fuel cost by about $1, or 10 %, illustrating the sensitivity of algae SAF to grid tariffs.
How do state-level carbon pricing mechanisms affect the competitiveness of SAF in the U.S. market?
States with carbon pricing, such as California’s Cap-and-Trade, impose a cost on fossil-fuel CO₂ emissions. This raises the effective price of conventional kerosene by roughly $0.10–$0.15 per gallon, narrowing the price gap with SAF and making it more attractive for airlines that can claim carbon credits.
What are the typical financing structures airlines use to fund SAF blending programs?
Airlines often use a mix of internal capital allocation, green bonds, and supplier-financing agreements. Green bonds issued by airlines can attract investors seeking ESG exposure, while supplier-financing allows airlines to defer payments until the blended fuel is delivered, reducing upfront cash outlays.
How does the availability of feedstock in a given region influence the choice of SAF production pathway?
Regions with abundant agricultural residues (e.g., corn stover in the Midwest) favor the Fischer–Tropsch pathway, while areas with high waste-oil streams (e.g., urban centers) lean toward the Hydroprocessed Esters and Fatty Acids (HEFA) route. Feedstock proximity reduces logistics costs and improves the overall lifecycle emissions profile of the chosen pathway.
Sources
In 2026, global sustainable aviation fuel (SAF) production reached approximately 2.5 million tonnes, equivalent to about 3.3 billion gallons. By contrast, total jet fuel consumption that year was roughly 1.2 billion gallons, meaning SAF accounted for only ≈ 0.28 % of overall jet fuel demand. This figure comes from the International Energy Agency’s 2026 Aviation Outlook, which aggregates refinery outputs and airline blending data as of March 2026 (IEA, 2026 Aviation Outlook, March 2026). IEA – Aviation Outlook
Every figure on this page is dated and linked to its source. How we verify · Editorial policy · Report a correction
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