The aviation authority also requires fuel to qualify under an international scheme. Its procurement company plans a first tender by mid-December 2026, with blended fuel deliveries due to begin in June 2027.
Singapore’s aviation authority said on 5 November that its purchases of sustainable aviation fuel with levy proceeds must meet a requirement for at least 40% fewer greenhouse gas emissions over the fuel’s lifecycle than conventional jet fuel.
The Civil Aviation Authority of Singapore (CAAS) set the criteria after its wholly owned nonprofit company, Singapore Sustainable Aviation Fuel Company (SAFCo), completed procurement for a voluntary fuel trial in August 2026. The trial tested processes for buying fuel and allocating its environmental attributes.
The fuel must also qualify under the International Civil Aviation Organization’s Carbon Offsetting and Reduction Scheme for International Aviation, known as CORSIA, which sets sustainability criteria for cleaner aviation fuels. CAAS said its own threshold was benchmarked against other jurisdictions and is above CORSIA’s 10% minimum.
A lifecycle comparison looks at emissions throughout a fuel’s life, including those released when an aircraft burns it. CAAS defines a fuel’s environmental attributes as the difference between its lifecycle carbon dioxide emissions and those from the same quantity of conventional aviation fuel.
It would allow Singapore to buy fuel made from a range of existing and emerging raw materials and production methods while securing greater emissions reductions. Daniel Ng, the authority’s chief sustainability officer, called it a “modest starting point” and said it showed Singapore’s commitment to environmental benefits from greener fuels, VnExpress International said in an account of The Straits Times' reporting.
Levy receipts will go into a statutory fund to buy fuel or related environmental attributes and cover administrative costs. Announced on 10 November 2025, the levy applies to origin-destination passengers and general and business aviation flights departing Singapore from 1 January 2027, for tickets or services sold from 1 October 2026. It must appear separately in the fare breakdown.
SAFCo will collect the levy and manage the fuel and its environmental attributes. It will allocate attributes associated with aircraft operators' direct emissions separately from the physical fuel, in proportion to their levy contributions, subject to a minimum allocation threshold of 0.01% of total levies. Other attributes, including unallocated attributes associated with aircraft operators' direct emissions and those associated with business travel and freight, will be available to organizations; proceeds from their sale will fund more fuel purchases.
Singapore aims for sustainable aviation fuel to account for 1% of jet fuel consumption at Changi and Seletar airports in 2027, rising to 3-5% by 2030.
CAAS said SAFCo plans to call the first levy-funded tender by mid-December 2026 for an initial 20 to 30 kilotonnes. Suppliers and producers may bid if they can deliver through Changi Airport’s existing fuel hydrant infrastructure and meet the quality, sustainability and procurement requirements.
SAFCo will assess bids on price, supply chain resilience, delivery certainty, sustainability documentation and support for Singapore’s sustainable aviation fuel sector. It may award contracts to one or more suppliers, with deliveries of blended fuel planned from June 2027. Its procurement portfolio combines term contracts and spot purchases. CAAS said the initial purchase will help assess market response, and more tenders will follow.
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