Singapore’s Green Fuel Levy: A Step Forward but Harder Work Awaits

Singapore has embarked on a bold sustainability initiative by introducing a green fuel levy on departing air passengers and cargo, signalling a clear intent to decarbonise its aviation sector. Yet while the policy marks meaningful progress, analysts caution that the real challenge lies ahead — namely securing affordable supply, insulating costs for airlines and passengers, and scaling the solution.

What Has Singapore Announced?

In February 2024, Singapore revealed plans to impose a levy on all departing passengers as of 2026, in order to fund the procurement of sustainable aviation fuel (SAF).
Then on 30 October 2025, the Civil Aviation Authority of Singapore (CAAS) announced the creation of a new state-owned company, Singapore Sustainable Aviation Fuel Company (SAFCo), which will centrally pool levy funds and contract for SAF.

Under the policy:

• All flights departing Singapore are expected to use at least 1 % SAF by 2026, rising to 3 %–5 % by 2030 (subject to global developments).
• The levy is anticipated to add S$3 for short-haul economy flights, up to S$16 for long-haul routes.
• The levy proceeds will be managed by SAFCo to purchase SAF in bulk contracts. Singapore hopes this will send a demand signal to drive scale and lower per-unit cost.

Why This Is a Step Forward

1. Marking a shift from intention to mechanism
   By legislating the levy and creating SAFCo, Singapore moves beyond talking about decarbonisation and begins building a funding and procurement mechanism. This is a clear policy signal.
2. Aligning aviation hub with sustainability objectives
   As a global aviation hub, Singapore has a responsibility (and opportunity) to set a precedent in the Asia-Pacific region. The levy and SAF target reinforce its ambition to remain competitive while embracing cleaner flight technologies.
3. Pooling demand to reduce cost
   Rather than each airline negotiating separately, SAFCo’s central procurement allows Singapore to aggregate demand, secure larger contracts, and reduce price risk. In a nascent SAF market, this is a smart move.
4. Building a domestic SAF ecosystem
   Singapore’s drive will stimulate investment in feedstocks, production, and supply chains. A growing SAF ecosystem helps diversify the aviation fuel supply mix and reduce reliance on fossil-jet-fuel imports.

The Harder Work: Three Key Challenges Ahead

1. Supply constraints & cost pressures

Although the targets are modest (1 % by 2026), SAF currently costs three to five times conventional jet fuel.
The feedstocks (such as used cooking oil, biomass) are limited, and global demand for SAF is rising. Without greater production and logistics scaling, Singapore may struggle to access sufficient volumes or face volatile prices.

2. Managing cost and competitiveness

While the levy spreads cost across passengers, airlines warn that added surcharges can reduce demand or push carriers to shift away. Singapore must balance sustainability with its role as a competitive air hub. For example, if short-haul flights become more expensive, traffic might divert.
Furthermore, as SAF prices fluctuate, Singapore’s “fixed cost envelope” procurement approach will set a cap on expenditure — which means volume may vary depending on market price.

3. Scaling beyond initial targets

Reaching 3 %–5 % SAF by 2030 will require a step-change in production, supply chains, and off-take agreements. Singapore’s domestic market is small, so regional cooperation and export links will matter. If Singapore cannot access enough SAF, meeting future mandates may become expensive or operationally disruptive.

Broader Considerations & Implications

• Infrastructure upgrades: SAF requires blending, handling and storage infrastructure. Singapore must ensure Changi and Seletar airports are ready.
• Emission accounting and certification: Ensuring SAF used is genuinely low-carbon (avoided land-use change, sustainable feedstock) will matter for credibility.
• Market spill-over effects: Singapore’s model may serve as a blueprint. If effective, regional airlines and hubs may adopt similar levy-fund-procurement models.
• Passenger behaviour: While the levy is small, repeated surcharges can accumulate. Airlines, regulators and governments must monitor potential travel shift or substitution effects.
• Environmental vs economic trade-offs: Singapore has clearly stated the levy is not at the expense of its air-hub competitiveness. But tensions may arise if costs escalate or global aviation demand weakens.

Outlook: What to Watch

• SAF price performance and supply announcements: A major increase in feedstock or production capacity would reduce cost pressure.
• First procurement results by SAFCo: What volumes and pricing SAFCo secures will be telling for cost-effectiveness.
• Airline responses and traffic trends: Monitoring if passenger numbers or average fares shift when the levy starts.
• Regulatory or policy adjustments: Singapore may need to tweak levy levels, target percentages, or provide subsidies if the cost burden becomes too heavy.
• Regional SAF ecosystem growth: Look for announcements of SAF plant expansions in Singapore or the region, offtake agreements, and feedstock supply frameworks.

Conclusion

Singapore’s green fuel levy and the establishment of SAFCo represent a significant and commendable step for aviation sustainability. They demonstrate a mature policy design — allocating cost fairly, organising procurement centrally, and setting clear targets.

However, the real test lies ahead: securing affordable and reliable SAF supply, keeping the air hub competitive, scaling up to meet ambitious future targets, and navigating global aviation headwinds. In short, the levy is just the beginning — the harder work of turning policy into lasting change is now underway.