Sustainable Aviation Fuel (SAF) 2026: scale-up reality vs aviation industry targets

In 50 words: Global SAF production reached ~1.5 million tonnes in 2025 — roughly 0.4% of total jet fuel demand. EU ReFuelEU Aviation mandate (2% SAF minimum) started January 2026, ratcheting to 70% by 2050. SAF costs remain 3-5x conventional jet fuel. Hydrotreated esters dominate; power-to-liquid SAF emerges. Massive scale-up still required.

The aviation decarbonisation challenge

Aviation accounts for ~2.5% of global CO2 emissions. Hard-to-abate because:

• Battery-electric flight viable only for short-distance (under 500 km)
• Hydrogen-fuelled aircraft requires fundamental new aircraft designs (decades away)
• Existing aircraft fleet has 20-30 year useful life

For meaningful aviation decarbonisation in 2025-2050 window, the only viable path is replacing fossil jet fuel with sustainable aviation fuel (SAF) in existing aircraft.

SAF production pathways

Multiple production pathways exist:

HEFA (Hydrotreated Esters and Fatty Acids)

• Most mature commercial pathway
• Feedstock: used cooking oil, tallow, plant oils
• Dominant SAF in 2025-2026 production
• Feedstock supply is the limiting factor for scaling

Alcohol-to-Jet (ATJ)

• Feedstock: ethanol from sugars or cellulosic biomass
• Lanzajet, others operating commercial plants
• Growing pathway

Power-to-Liquid (PtL) / e-SAF

• Feedstock: green hydrogen + captured CO2
• Synthesised via Fischer-Tropsch or methanol-to-jet
• Highest theoretical scaling potential (uses renewable power, not biomass)
• Highest current cost
• First commercial plants commissioning 2026-2028

Direct Air Capture-to-SAF

• Earliest commercial stage
• Lowest sustainability concerns (no land use)
• Highest cost — currently $5+ per litre

Production reality vs targets

2025 global production: ~1.5 million tonnes SAF. 2025 global jet fuel demand: ~360 million tonnes.

SAF share: ~0.4%.

EU ReFuelEU Aviation mandate ratchet:

• 2025: 2% SAF
• 2030: 6% SAF
• 2032: 8% SAF
• 2035: 20% SAF
• 2040: 32% SAF
• 2050: 70% SAF

Achieving these requires roughly 100x production growth by 2050. Massive scaling.

Cost economics

| Fuel | Cost per litre (2026) | |---|---| | Conventional jet fuel (Jet A) | $0.80-1.00 | | HEFA SAF | $1.50-2.50 | | Alcohol-to-Jet SAF | $2.00-3.50 | | Power-to-Liquid SAF | $3.00-5.00 |

Airlines absorb SAF cost premium through ticket surcharges or carbon offset purchases. The premium is meaningful (10-30% added per ticket if 100% SAF), driving slow voluntary adoption.

Major producers

• Neste (Finland) — global leader, HEFA capacity 1.5+ Mt/year
• TotalEnergies (France) — La Mède refinery converted
• BP — multiple capacity expansions
• ExxonMobil — Esso Australian refinery + others
• World Energy (US) — Lanza-based + HEFA
• Lanzajet (US) — alcohol-to-jet
• HIF Global (Chile/Tasmania) — e-SAF demonstrator
• Twelve (US) — CO2-to-fuel demonstrator

Indian context

India has ambitious SAF targets:

• 2% SAF blending by 2027
• 5% SAF blending by 2030
• Indian Oil Corporation + Bharat Petroleum coordinating production
• Tata + Reliance + Adani exploring SAF facility investments
• Used cooking oil + sugar industry molasses as feedstock

What developers should know

For renewable energy + hydrogen project developers:

• SAF (especially e-SAF/PtL) creates massive green hydrogen offtake opportunity
• 4-6 kg H2 needed per tonne of e-SAF
• Co-located renewable + electrolyser + SAF facility models emerging
• Long-term offtake contracts available from airlines + airport authorities
• Government policy environment is favourable globally

What to watch next

The first 100,000+ tonne/year commercial e-SAF facility (likely HIF Tasmania or similar, expected 2027-2028) will establish whether power-to-liquid economics actually work at scale. If unit cost lands below $2.50/litre, e-SAF transitions from niche to mainstream by 2030.

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Researched and drafted with AI assistance; reviewed and edited by the named author within 24 hours of draft.