A Milestone for Sustainable Shipping
Singapore has taken a significant step in advancing its sustainable shipping initiatives. The Maritime and Port Authority of Singapore (MPA) announced on March 6, 2025, that it has raised the permissible biofuel blend limit for licensed bunker tankers from B25 to B30. This move, effective from March 7, allows bunker tankers in the Port of Singapore to transport and deliver biofuel blends up to B30 without requiring separate approval from the MPA.
This decision aligns with Singapore’s broader goal of driving the maritime industry towards a lower-carbon future while ensuring operational efficiency in the world’s busiest bunkering hub.
What This Means for Bunker Tankers
The increase in biofuel blend limits means that licensed bunker tankers can now supply marine biofuels up to B30 more seamlessly. However, bunker suppliers and operators must conduct thorough technical and operational risk assessments before delivery. These assessments ensure that both buyers and sellers understand the compatibility, safety, and performance of the biofuel blends used.
For biofuel blends above B30 or biofuels not listed under Chapters 17 and 18 of the International Bulk Chemical (IBC) Code or the MEPC.2/Circ.27 (Annex 11), suppliers must obtain approval from MPA’s Standards & Investigation – Marine Fuels (SIMF) department. This regulatory oversight ensures that the transition to higher biofuel blends does not compromise vessel safety or operational efficiency.
Aligning with Global Sustainability Goals
This update follows Singapore’s submission to the International Maritime Organization’s (IMO) upcoming Marine Environment Protection Committee (MEPC 83) session in April. The IMO has been actively promoting alternative fuels and low-carbon shipping solutions as part of its strategy to reduce greenhouse gas emissions.
With this change, bunker tankers certified under MARPOL Annex I will now be able to transport biofuel blends of up to 30%, further aligning Singapore’s maritime sector with international sustainability efforts.
The Road to Higher Biofuel Blends
Although biofuel blends of up to B50 are available in the market, trials for blends as high as B100 are still ongoing. Singapore has been at the forefront of biofuel innovation, with the first marine biofuel trial involving an ocean-going ship taking place in 2021.
Since then, progress has accelerated. In 2024, Norden conducted the first-ever B100 biofuel bunkering in Singapore, marking a breakthrough in high-blend biofuel adoption. Additionally, Vitol Bunkers introduced its first specialized biofuel bunker barge, Marine Future, capable of supplying blends such as B24, B30, and up to B100. These advancements demonstrate growing confidence in biofuels as a viable marine fuel alternative.
The Bigger Picture for Singapore’s Maritime Industry
As one of the world’s largest bunkering hubs, Singapore’s commitment to increasing biofuel usage signals its leadership in maritime sustainability. By gradually increasing biofuel blend limits and supporting innovation in the sector, Singapore is setting a benchmark for other major ports worldwide.
Biofuels provide an immediate pathway to reducing carbon emissions while existing vessels remain operational. Unlike other alternative fuels that require infrastructure changes, biofuels can be used in conventional ship engines with minimal modifications, making them a practical solution for decarbonizing shipping.
Conclusion
Singapore’s decision to raise biofuel blend limits for licensed bunker tankers to B30 represents a significant step towards a greener maritime future. This move not only simplifies biofuel adoption but also aligns with global regulatory efforts to decarbonize shipping.
With ongoing trials for higher biofuel blends and investments in biofuel infrastructure, Singapore is reinforcing its position as a leader in sustainable bunkering. As the maritime industry continues to transition towards low-carbon solutions, initiatives like this will play a crucial role in shaping the future of global shipping.