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DNV releases technical article on use of biofuel bunkers in shipping

DNV released the guide after receiving many requests regarding safe operation of ships using biofuels and/or biofuel blends and how to comply with international regulations when using these bunker fuels.
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Classification society DNV on Tuesday (21 February) released a technical article to clarify the regulatory status and other considerations on the usage of such fuels after seeing an increasing interest in biofuel bunkers or biofuel blends. The following is an excerpt of it:

Relevant for shipowners, managers, seafarers, maritime training institutes and flag states. 

DNV has received many requests regarding the safe operation of ships using biofuels and/or biofuel blends and how to comply with international regulations when using these fuels. Below is a summary of regulatory issues, safety and operational aspects:

Types of biofuels

Three types of biofuels are relevant for maritime shipping:

  • FAME (Fatty acid methyl ester) is produced from vegetable oils, animal fats or waste cooking oils by transesterification, where various oils (triglycerides) are converted to methyl esters. This is the most widely available type of biodiesel in the industry and is often blended with regular marine diesel. International standards: ISO 8217:2017, EN 14214, ASTM D6751, EN 590
  • BTL (Biomass to liquid) fuels are synthetic fuels that are produced from biomass by means of thermo-chemical conversion using the Fischer-Tropsch process or the methanolto-gasoline process. The final product can be fuels that are chemically different from conventional fuels such as gasoline or diesel but can also be used in diesel engines. International standards: EN 16709, EN 15940
  • HVO/HDRD (Hydrogen vegetable oil / Hydrogenation derived renewable diesel) is the product of fats or vegetable oils – alone or blended with petroleum – refined by a hydrotreating process known as fatty acids-to-hydrocarbon hydrotreatment. Diesel produced using this process is often called renewable diesel to differentiate it from FAME biodiesel. HVO/HDRD can be directly introduced in distribution and refuelling facilities as well as existing diesel engines without any further modification. International standards: ASTM D 975

Currently, FAME is the most prominently used biofuel in marine applications. It is either used in blends with traditional petroleum fuels or as 100% biofuel

Biofuels and their effect on GHG regulations

The Maritime Safety Committee has invited all relevant IMO bodies to assess their respective involvement in the human element within their remit and report back to the committee with a view to devising an outline for a holistic approach on the human element, taking into account resource and budgetary implications within the IMO. In this regard, HTW 9 invited member states and other interested parties to submit papers to HTW 10 in February 2024.

Model training courses

IMO model courses intend to assist instructors in developing training programmes for seafarers as per the International Convention of Standards of Training, Certification and Watchkeeping for Seafarers (STCW), 1978. The model courses are subject to regular review to ensure that they are consistent with the current IMO instruments and reflect best practices and modern technologies.

HTW 9 validated a large number of model courses, as there was a backlog due to time constraints in the remote sessions of the last two years. 

The following model courses are now validated and will be published soon:

  • EEDI and EEXI
    The EEXI and EEDI only consider the so-called tank-to-wake approach, meaning that only the carbon content of standard reference fuels the vessel is designed for is considered. For that reason, the usage of biofuels has no effect on the EEXI or the EEDI.
  • CII (Carbon Intensity Index)
    In view of IMO DCS reporting as well as the CII calculation methodology – as per the 2022 SEEMP Development Guidelines, Resolution MEPC.346(78), and the CII Calculation Methods Guidelines, Resolution MEPC.352(78) – in case of fuel types not covered by the guidelines, the conversion factor Cf is to be obtained from the fuel oil supplier and supported by documentary evidence.
    Any non-standard approach in the determination methodology of tank-to-wake emissions for biofuels is subject to acceptance by the vessel’s flag administration as well as the RO handling the IMO DCS and CII verification on behalf of the flag, where an addition to the list of fuel types used and applicable conversion factors needs to be reflected in the SEEMP Part II.
    In case of acceptance of the flag state administration, the usage of biofuels, also in form of blends with traditional petroleum fuels, will have a significant impact on the reduction of the CII value
  • EU MRV
    As per Regulation (EU) 2015/757, in case of alternative fuels, the monitoring plan shall contain “the methodologies for determining the emission factors, including the methodology for sampling, methods of analysis and a description of the laboratories used, with the ISO 17025 accreditation of those laboratories, if any”. It is worth noting that Directive (EU) 2018/2001 (EU RED II), Annex V, Part C provides a methodology for greenhouse gas emissions from the production and use of transport fuels, whereas per point 13, the CO2 emissions of the fuel in use shall be taken to be zero for biofuels and bioliquids.
  • The proposed method for calculation of the CO2 emission factor for biofuel and biofuel blends should be included in the ship’s MRV Monitoring Plan along with an addition to the list of fuel types used and method for determination of fuel density, with the revised plan being subject to acceptance from the Accredited Verifier, such as DNV.

Note: The full copy of DNV’s technical article on biofuels can be found here. 

 

Photo credit: DNV
Published: 23 February, 2023

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China: Chimbusco and BJEC enter green methanol cooperation agreement

Document was signed between Ding Lihai, deputy general manager of Chimbusco, and Li Jianjun, deputy general manager of BJEC.
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Chimbusco x BJEC MT

China Marine Bunker (PetroChina) Co.,Ltd. (Chimbusco) and POWERCHINA Beijing Engineering Corporation Limited (BJEC) on Thursday (3 July) formally entered into a green methanol strategic cooperation framework agreement.

The document was signed between Ding Lihai, deputy general manager of Chimbusco, and Li Jianjun, deputy general manager of BJEC.

BJEC, a subsidiary of China Power Engineering Group, is experienced in the survey, design, construction and technology research and development of large-scale renewable energy projects.

Moving forward, the two parties said they will respectively focus on their core advantages and work together to promote the production, supply, storage and refuelling of green methanol as an energy source to help support the low-carbon transformation of the shipping industry.

Ding Lihai said: “The shipping industry is one of the important sources of global carbon emissions. Promoting low-carbon fuel is the key to the transformation of the industry. As the main force in the supply of bunker fuel, Chimbusco has been committed to expanding its clean fuel supply capacity. The cooperation with BJEC will integrate the advantages of green energy development and fuel supply, accelerate the large-scale application of green methanol, and meet the needs of shipping companies for clean fuel. We look forward to providing effective solutions for the green transformation of the shipping industry through the joint efforts of both parties.”

Li Jianjun said: “Implementing the ‘dual carbon’ goal is an important responsibility of enterprises. BJEC has accumulated strong technical strength in the field of green energy. This cooperation with Chimbusco will focus on the entire industrial chain of green methanol, from raw materials, production to supply, to provide clean and sustainable fuel solutions for the shipping industry. The complementary advantages of both parties will promote the rapid development of the green methanol industry and inject strong impetus into the low-carbon transformation of the shipping industry.”

 

Photo credit: China Marine Bunker (PetroChina) Co.,Ltd.
Published: 8 July 2025

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Milestone

Towngas and Royal Vopak collaborate to expand green methanol supply chain network

‘Towngas has recently completed a 6,000-tonne green methanol bunkering project, the largest in Asia,” said its Chief Operating Officer – Green Fuel and Chemicals.
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Towngas x Royal Vopak MT

Hong Kong and China Gas Company Limited (Towngas) and Vopak China Management Co., Ltd. (Royal Vopak) on Tuesday (8 July) said both recently signed a strategic framework cooperation agreement to collaborate in areas such as green methanol production, storage, bunkering, and trading etc.

Focusing on the Chinese mainland, Hong Kong, and Asia-Pacific markets, both parties are joining forces to expand an efficient green methanol supply chain network and support the shipping industry’s low-carbon transition.

The two parties will capitalise on their respective strengths to expand the supply network of green methanol.

Towngas employs proprietary technology to convert agricultural and forestry waste as well as scrap tyres into green methanol, and has obtained multiple international certifications and provides a sufficient supply of green methanol for maritime fuel bunkering.

Royal Vopak provides green methanol storage and terminal services with its comprehensive storage and terminal infrastructure and coastal port network advantages.

Together, the two parties will achieve efficient resource allocation and ship green methanol to the Greater Bay Area, East China, South China, and the broader Asia-Pacific markets, further expanding the green methanol supply chain network.

Towngas and Royal Vopak will further develop multiple areas of regional cooperation, including in the Greater Bay Area. By leveraging the strengths of the ports in Hong Kong, Shenzhen, and Guangzhou, the partnership will focus on “production and storage synergy” as its core to strengthen cooperation around logistics and terminal facility construction, and to build an integrated green methanol storage and transportation network.

In East China, the two parties will centre their collaboration in Shanghai and Ningbo, two major international ports, to further strengthen cooperation in logistics storage and bunkering facility construction to meet the growing demand for green fuels at both ports.

In the Bohai Bay region, with Tianjin as the strategic hub, Towngas will transport green methanol produced at its northern China production base to Royal Vopak’s local storage tank farm, then achieve resource allocation through the Royal Vopak’s distribution network, supporting the supply of green methanol from northern China to the national and Asia-Pacific markets.

The two parties will also target key export markets, such as Singapore, Vietnam, Japan, and South Korea, to accelerate overseas expansion and boost the market competitiveness of clean energy in the Asia-Pacific region.

“Towngas has recently completed a 6,000-tonne green methanol bunkering project, the largest in Asia,” said Sham Man-fai, Towngas Chief Operating Officer – Green Fuel and Chemicals.

“It was completed with the support of Royal Vopak’s Tianjin storage tank farm facilities, laying a solid foundation for this partnership.

“Towngas’s Inner Mongolia green methanol plant is set to increase its annual capacity from 100,000 tonnes to 150,000 tonnes by the end of this year, with plans to further expand to 300,000 tonnes by 2028. Together with Royal Vopak’s storage and terminal services infrastructure and coastal port network, the two parties will build a comprehensive green methanol supply chain network.”

 

Photo credit: Hong Kong and China Gas Company Limited
Published: 8 July 2025

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Biofuel

Chimbusco Pan Nation bio bunker fuel supply volume in H1 2025 surpasses 2024 total

Company supplied over 78,000 metric tonnes of marine biofuel in Hong Kong in the first six months of 2025, surpassing its total biofuel supply for the whole of 2024.

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July 7, 2025

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Chimbusco Pan Nation bio bunker fuel supply volume in H1 2025 surpasses 2024 total

Hong Kong-based marine fuel oil supplier Chimbusco Pan Nation Petro-Chemical (CPN) on Friday (4 July) said it has supplied over 78,000 metric tonnes (mt) of marine biofuel in Hong Kong in the first six months of 2025.

As such, the company said its biofuel volume for the first half of the year exceeded its total biofuel supply for the whole of 2024. 

“This record-breaking achievement highlights our commitment to sustainability and innovation in the maritime industry,” the company said in a social media post. 

“From January to June 2025, our team surpassed last year’s total, proving that dedication and excellence knows no limits—and exceeded 2024 by 80%!”

Manifold Times previously reported CPN setting a record for China’s largest B24 marine biofuel bunkering operation.

CPN delivered 6,300 mt of B24-VLSFO in Hong Kong to container ship XIN LOS ANGELES on 15 May. The supply exceeded CPN’s previous record of 5,500 mt delivered to the same ship in February 2025.

In April, the company also commenced supply of B30 biofuel in Hong Kong. 

Related: Hong Kong: CPN hits new record for China’s largest B24 biofuel bunkering operation
Related: CPN achieves largest B24 bio bunker fuel delivery in Hong Kong and China
Related: Chimbusco Pan Nation launches B30 bio bunker fuel supply in Hong Hong

 

Photo credit: Chimbusco Pan Nation Petro-Chemical
Published: 7 July, 2025

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