For worldwide shipping, biofuels offer a rapid solution to exceed compliance with environmental regulations without costly retrofits
The introduction of FuelEU Maritime rules and IMO’s strategies to lower greenhouse gas (GHG) emissions from the shipping industry are challenging owners, but solutions are available. Sustainable biofuels can be blended with traditional maritime fuels, enabling shipowners to comply with environmental regulations without needing expensive and complex retrofitting.
There are availability, commercial, technical and operational challenges when using biofuels and fuel blends, but these can be overcome.
An expert panel discussed the commercial, operational and technical advantages and challenges for using biofuels during Riviera’s Biofuel’s balancing act: compliance, competitiveness, and carbon reduction under FuelEU Maritime webinar, which was held on 11 April 2025 during Riveria’s
Chevron Renewable Energy Group executive director for strategic initiatives, Jon Scharingson; HutanBio founder and director John Archer; V Group commercial director for decarbonisation James Helliwell; and Womar Logistics chief operating officer Manish Jain.
They discussed how biofuels can be used for compliance with the European Union’s recently introduced FuelEU Maritime, for pooling mechanisms and how shipowners and operators can integrate drop-in fuels into their fleets.
This panel discussed the competitiveness, availability and infrastructure for producing sustainable biofuels, such as hydrogenated vegetable oils (HVOs) and fatty acid methyl ester (FAME). They addressed concerns over biofuel sourcing and certification, technical compatibilities, well-to-wake lifecycle analysis and whether these sustainable fuels will remain applicable in the long-term future.
“It is not expensive to retrofit ships for biofuels”
Mr Helliwell said FuelEU Maritime began to take effect on 1 January 2025 applying a tax on the GHG intensity of fuels on ships entering Europe. There is a limit, with ships going over this paying penalties, whereas those below the limit can offer credits to other owners in a pool of vessels.
Over time, this limit will become stricter as the EU intends to accelerate the use of low-carbon fuels.
Using blends of biofuels with marine gasoil (MGO) and very low sulphur fuel oil (VLSFO) up to B30 would enable shipping to continue operating until around 2037 and B100 blends gets owners to 2050 with no penalties, said Mr Helliwell.
“By pooling and trading, owners can generate new revenue streams from selling credits,” he said. “It is not expensive to retrofit ships for biofuels,” said Mr Helliwell. “Main engine providers support B30 without modifications of engines, and anything higher only needs a little work.”
However, there are concerns about viscosity challenges when using biofuels, as they could clog pumps and filters; warnings over quality with reports of cashew nut-based biofuels causing engine issues; and over the original source of fuels.
“FuelEU requires certificates that prove the origin of fuel and resulting GHG intensity reductions, which means owners need certificates to verify biofuels,” said Mr Helliwell.
Mr Jain expects biofuels as drop in fuels to be used for sustainable shipping and to comply with environmental regulations for the long term, despite the operational issues, such as fuel viscosity and flashpoint.
“We can deal with these as we learn more about biofuels,” he said. “There are many solutions around selling different fuels and pools, it is an unregulated market.”
Shipowners, operators and managers have been working with biofuels and blends involving them for 10 years, and engine manufacturers have been testing them for longer.
“There are no problems with blended fuels,” said Mr Jain. “They are approved, so there are no issues there. They are ready to use as drop-in fuels and FuelEU provides incentives, so it is time everyone gets on with this and moves to biofuels.”
Fuel supplier viewpoint
Chevron’s Mr Scharingson said biofuel bunkering facilities are opening in major global ports as demand rises and greater incentives are offered from IMO’s GHG reduction strategy, publicly trading companies and consumers to lower the use of carbon-based fuels.
“Biodiesel and renewable diesel are immediate viable options, with demand in the Americas, Europe and Singapore for B24 and B30 blends. B100 is also being used,” said Mr Scharingson.
On a commercial basis, biofuels and renewable diesel are trading at large premiums to fossil fuels, leaving companies searching for other technical options, such as dual-fuel ships, which could still be operating in 25 years time.
“Regional incentives are driving demand and a voluntary carbon market is evolving,” said Mr Scharingson. “But we need standardisation for implementing these low-carbon fuels. We need a full lifecycle approach.”
Available biofuels are in high demand across industries, with shipping competing with aviation and land-based sectors. “Maritime needs to get act together to secure these fuels,” said Mr Scharingson.
HutanBio’s Mr Archer agrees. “There is danger. The aviation industry has an organised system for new fuels, whereas the marine industry does not. There is no one point of contact.”
He highlighted how several manufacturers of engines want to carry out their own trials with new fuels, which is costly and a barrier to fuel developers.
“We cannot pay million of dollars for testing in various engines with multiple OEMs over multiple stages of testing. Biofuels will go to aviation instead.”
Mr Archer wants one system for testing new fuels for approval across the maritime sector.
“Let’s think about homogenising protocols of how biofuels are approved,” he said. “We need to secure investments and do not need multiple tests.”
HutanBio is developing biofuels from algae grown in deserts where the land is not good enough to grow crops, as is the case for most biofuels used currently.
“Our pilot project shows we can produce 24 tonnes per hectare of fuel from algae, addressing the scale, and we do it in the desert so there is not impact on food,” said Mr Archer.
For comparison, the most efficient oil crop to date generates 3.2 tonnes per hectare from palm oil from tropical zones.
“Biofuels from algae burn cleanly,” said Mr Archer. “Our high-grade single molecule can match to ISO 8217: 2024 standard and we can produce fuel blends up to 24% or 30% with no difficulties.”
Webinar poll results
Attendees were asked to vote on a series of poll questions during the webinar. Here is a summary of the results.
What is the most operationally important criteria when selecting alternative marine fuels for your fleet or customers?
Compatibility with vessels and operational standard practices: 53%
Energy density: 8%
Supply chain verification: 21%
Consistent fuel specification: 18%
What is your top concern when considering biofuels?
Certification/credentials: 10%
Price: 22%
Supply/availability: 32%
Reliability or compatibility with engines: 36%
Would you support a common testing and engine certification pipelines for alternative marine fuels?
Yes: 76%
Maybe: 16%
No: 8%
Are you planning to use biofuel for vessels this year?
Yes: 44%
Maybe: 27%
No: 29%
(source: Riviera Maritime Media)
On the panel of Riviera’s Biofuel’s balancing act: compliance, competitiveness, and carbon reduction under FuelEU Maritime webinar were (left to right): Chevron Renewable Energy Group executive director for strategic initiatives Jon Scharingson, HutanBio founder and director John Archer, Womar Logistics chief operating officer Manish Jain and V Group commercial director for decarbonisation James Helliwell.
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