Beyond fuel choice: Budget 2026 and Singapore’s structural strategy in low-carbon transport

A low-carbon future preserves Singapore’s position as global connectivity node.

The central question facing global logistics today is no longer whether to decarbonise, but how to do so without eroding competitiveness. The announcement related to the aviation and maritime sectors in Singapore’s Budget 2026 signals that low-carbon fuels are not merely environmental inputs, but economic variables to be managed structurally.

These two sectors constitute the core pillars of Singapore’s trade-dependent economy. The air hub contributes roughly 5% of GDP and supports more than 60,000 jobs, whilst the maritime sector accounts for over 7% of GDP and employs around 170,000 people.

Together, they anchor trade flows, logistics networks, tourism, maritime finance, and high-value professional services. A poorly managed fuel transition would reverberate across the broader economy, affecting supply chains, corporate headquarters decisions, and capital flows.

Preparing for a low-carbon future, therefore, requires not only emissions reduction, but also the preservation of Singapore’s reliability and leading position as a global connectivity node.

Budget 2026 confirmed a 1% sustainable aviation fuel (SAF) blending target for flights departing Singapore this year.

In October 2025, the Civil Aviation Authority of Singapore (CAAS) announced that, instead of adopting a percentage-based mandate tied to volatile SAF premiums, Singapore would introduce a fixed, distance-based SAF levy for tickets purchased from 1 April 2026 for flights departing on or after 1 October 2026.

Passenger charges will range from $1 to $41.60, depending on distance and cabin class. Cargo shipments will face a distance- and weight-based levy of $0.01 to $0.15 per kilogram. The levy reflects projected SAF price differentials as well as associated certification, blending, and delivery costs. Proceeds will be pooled into a central procurement fund designed to meet the 1% target.

This strategy reallocates transition risk from individual airlines to a coordinated system. By fixing compliance costs and centralising procurement, Singapore reduces price volatility whilst safeguarding route economics for a hub handling nearly 70 million passengers annually. It also strengthens regulatory interoperability.

As carriers navigate multiple emissions regimes, including the EU ETS and CORSIA, transparent and standardised fuel accounting becomes increasingly valuable. Singapore’s model positions Changi not merely as a refuelling point, but as a jurisdiction where compliance documentation and emissions verification are streamlined, reinforcing its competitive standing in an increasingly regulated global aviation market.

Budget 2026 also supports the development of low-carbon ammonia bunkering on Jurong Island, potentially positioning Singapore amongst the first jurisdictions to supply ammonia commercially for international shipping. The initiative represents an effort to shape the infrastructure and standards for next-generation bunkering.

The Energy Market Authority (EMA) and the Maritime and Port Authority of Singapore (MPA) have appointed industry partners to undertake front-end engineering and design (FEED) studies across the value chain, covering a 55 to 65 megawatt (MW) ammonia-fired power plant, associated terminal infrastructure, and planned bunkering capacity of at least 0.1 million tonnes per annum.

In parallel, the MPA and EnterpriseSG are developing national standards for methanol and ammonia bunkering, including custody transfer protocols, safety procedures, and crew competency requirements.

The strategic value of this initiative lies in infrastructure risk management and standard-setting leadership as ammonia requires specialised storage, handling systems, and rigorous safety protocols, all of which are capital-intensive investments that carry early-stage utilisation risk.

By integrating bunkering with domestic power generation, Singapore spreads fixed infrastructure costs across multiple demand streams, reducing stranded asset exposure and improving commercial viability.

Institutionalised operational standards also enhance confidence amongst shipowners and financiers. By anchoring early ammonia capability, Singapore reduces the risk that vessel calls migrate toward alternative fuel hubs, thereby protecting its bunkering leadership and the broader maritime services cluster.

Despite the state’s proactive structural planning, uncertainties persist. SAF faces structural constraints in global supply, cost dynamics, and regulatory alignment. According to the International Air Transport Association (IATA), global SAF production in 2025 is expected to account for only around 0.6% of total jet fuel consumption, far below levels required for large-scale mandate expansion.

Given that SAF costs two to five times more than conventional jet fuel, airlines have little incentive to adopt it voluntarily. This results in weak demand, discouraging refiners from scaling up SAF production.

Therefore, government intervention aligned with global regulatory trends is necessary to accelerate the deployment of SAF. Singapore’s 1% target in 2026, reaching 3% to 5% by 2030, is comparable to South Korea’s planned trajectory (1% in 2027 and 3 to 5% in 2030), but less ambitious than 2030 targets in Japan (10%), the UK (9.5%), and the EU (6%).

Singapore’s target may need to be adjusted in line with other countries, but without eroding cost competitiveness, since cumulative compliance costs could reshape route economics if supply growth fails to keep pace with tightening requirements.

For maritime transition, although ammonia offers greater decarbonisation potential, commercial adoption remains nascent and clean marine fuels command a premium over conventional bunker fuels. According to DNV, ammonia still lags behind alternatives such as bio-LNG and e-LNG. Globally, only a handful of ammonia-capable vessels are in operation, and bunkering infrastructure remains sparse.

Early infrastructure investments, therefore, face technology uptake risk, particularly if shipowners favour methanol or other fuels. Moreover, the scalability of both ammonia and methanol pathways depends on upstream clean hydrogen availability, which itself faces cost and supply challenges.

These uncertainties do not invalidate Singapore’s strategy, but they underscore the importance of flexibility. Singapore’s advantage lies not in committing to a single molecule, but in maintaining multi-fuel readiness and modular infrastructure adaptable to evolving global standards.

Budget 2026 reflects recognition that low-carbon fuels are no longer peripheral environmental options, but competitive variables requiring institutional management. In a global transition defined by supply constraints and regulatory fragmentation, the decisive advantage will belong not to the hub that produces the cheapest molecule, but to the one that institutionalises reliability, compliance, and flexibility.