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DNV on decarbonizing ferries: Technological innovation and electrification

Recent technological innovations in the ferry industry have focused on electrification and battery power; DNV presents three key technologies driving the decarbonization of ferries.

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DNV on decarbonizing ferries: Technological innovation and electrification

Classification society DNV on Thursday (16 November) released a Maritime Impact report on the decarbonization of ferries. The following is excerpts from the article: 

As shipping examines a range of options to reduce greenhouse gas emissions, recent technological innovations in the ferry industry have focused on electrification and battery power. DNV presents three key technologies driving the decarbonization of ferries.

With IMO decarbonization targets becoming more ambitious, and social and political pressure building, each sector of the maritime industry needs to examine the most practical and cost-efficient ways of reducing greenhouse gas emissions. For ferries, electrification and battery power are high on the agenda.

Electrification and battery power perfect fit for ferries

“Ferries are the perfect segment for electrification and battery power,” says Hans Eivind Siewers, Segment Director of Passenger Ships and RoRo at DNV. “Short, regular routes between the same ports makes it easier to charge regularly and reduces the need for large batteries.”

Three new technologies have emerged in recent years which are expected to have an impact on the ferries market. For all, the development has been facilitated by recent technological developments, most notably improvements in the energy density of batteries. Two of these innovations are based on hydrofoiling, an established technology which is making a comeback due to energy efficiency gains.

Hydrofoiling: Back to the future with Fast Foil Ferry

Hydrofoil technology – where a foil lifts the vessel up from the water as it gathers speed – was popular in the 1970s due to passenger comfort and high speeds, but this was eventually sidelined due to poor fuel and energy consumption. However, over the past few years, advancements in high strength and lightweight composite materials, gains in hydrofoiling technology and – most importantly – increases in the energy density of batteries have reopened the door to this technology.

Collaborative innovation: Developing a fully electric Fast Foil Ferry

In 2020, Kitsap Transit (a public transit agency serving Kitsap County, Washington, part of the Seattle metropolitan area), Foil Ferry LLC (a collaboration between Anacortes-based Bieker Boats and Seattle naval architecture firm Glosten) and Washington Maritime Blue received a Federal Transit Administration innovation grant to develop a proof-of-concept design for a fully electric Fast Foil Ferry. This has led to the delivery of a preliminary design for a high-speed hydrofoil passenger ferry, aided by DNV-led studies around shoreside infrastructure and permitting requirements and economic and environmental impacts.

Decarbonization just one advantage of Fast Foil Ferry

“These ferries use around one-third of the energy of conventional fast ferries and have zero local emissions,” says Cassidy Fisher, Programme Director of Washington Maritime Blue, which is coordinating the Fast Foil Ferry project. “They produce negligible waves as the hulls fly above the water’s surface. This is important for protecting sensitive shorelines such as those along Rich Passage, Washington, which makes up a significant portion of the Bremerton–Seattle route.”

With a cruising speed of 30 knots (around 55 km/h), the ferries have a range of about 30 nautical miles. This means they will be able to complete one full round trip on the proposed Bremerton to Seattle commuter route without recharging.

Financial benefits make the business case for Fast Foil Ferry

Besides the extensive list of advantages, including reduced motion compared to non-foiling hulls, providing passengers with a more comfortable ride, reduced noise, and the hope that increased ferry traffic will result in fewer cars on the roads of Washington State, the Fast Foil Ferry will also deliver significant savings to its operators.

“We have estimated a 35% reduction in annual operating costs compared to conventional diesel-powered ferries, mainly due to energy savings, although this depends on the price of diesel,” continues Fisher. “Alongside the decarbonization benefits, this is a strong business case and removes any significant barriers to further development.”

The project is aiming to secure another USD 4 million in federal funding so it can advance and complete the design development stage, while full-scale trials, construction and deployment, and the development of shoreside infrastructure will require another USD 18 million in funding.

From LNG to battery power

In Uruguay, ferry operator Buquebus is preparing to start operating the largest battery-powered ship in the world. Currently under construction at Tasmania-based shipbuilder Incat, the 130-metre ship will have a battery capacity of over 40 MWh, almost four times the capacity of any battery-powered vessel constructed before.

Following the success of the DNV-classed HSC Francisco Papa, Incat’s first LNG vessel delivered to Buquebus in 2013, the new DNV-classed vessel was originally planned to run on LNG. This was switched to electric/battery propulsion after Robert Clifford, founder of Incat, showed Buquebus his plans for a new electric/battery-powered ship.

“Our President Mr. Lopez Mena asked Incat if it was possible to use the electric propulsion on our future vessel,” explains Gerardo Babini, Technical Manager, Buquebus. “After a couple of weeks of weight and speed calculations, Incat came back to us and said it would be possible.”

The future of ferries is battery-powered

While the Buquebus ferry is very different in design to the two hydrofoil vessels, all of these technologies showcase the key role that electrical/battery power can play in the decarbonization of shipping. This is likely to increase, particularly in the ferry industry, as battery technology develops even further.

“These technologies are all extremely exciting and impressive, but we can expect so much more from battery power over the next ten years,” says Hans Eivind Siewers. “Improvements in density will extend ranges, opening up longer routes and reducing the reliance on scarce carbon-neutral fuels. This will contribute greatly to shipping’s quest to reach net-zero by 2050.

Note: DNV’s full Maritime Impact report on ‘Decarbonizing ferries: Technological innovation and electrification’ can be found here.

Photo credit: DNV / Incat Tasmania 
Published: 24 November, 2023

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ICCT: China’s electric cargo ship fleet grows 950% in three years

In its latest blog, ICCT says vessel sizes for electric cargo ships have grown significantly, indicating that China is testing the feasibility of electrification for increasingly larger ships.

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CHUTTERSNAP MT

The International Council on Clean Transportation (ICCT) recently said China’s fleet of electric cargo ships has grown by 950%, from just four vessels in 2022 to 42 in 2025.

According to its latest blog, electrification is rapidly expanding along inland waterways in the country, offering a pathway to cut emissions, improve air quality, and lower operating costs.

ICCT said electric cargo ships are entering real-world operation at a rapidly growing pace

“Ship types have diversified, from bulk carriers and container ships to multi-purpose cargo ships. At the same time, vessel sizes have grown significantly, with the maximum deadweight tonnage (DWT) rising from around 3,000 tonnes in 2022 to approximately 14,000 tonnes in 2025,” it said.

“This indicates that China is testing the feasibility of electrification for increasingly larger ships.”

Although battery capacity constraints continue to limit sailing range per charge—which typically hovered between 150 km and 400 km from 2022 to 2025—trends show steady improvement; by 2025, electric cargo ships with a range of up to 500 km were already in operation in China.

Inland waterways have become the primary testing ground for electric cargo ship deployment. 

By the end of 2025, 86% of electric cargo ships in China were operating on internal rivers. 

“Nine provinces and municipalities have already launched pilot projects, covering major waterways such as the Yangtze River, the Pearl River, and the Beijing-Hangzhou Grand Canal,” ICCT added.

The blog also explored the opportunities, challenges, and policy actions that could accelerate the shift to electric inland shipping.

“Developing an enhanced subsidy that favors electric vessels, on top of the current vessel trade-in subsidy program, could help reduce the upfront investment burden for electric vessel adoption,” it recommended.

ICCT added that tightening ship engine emission standards toward world-leading levels could increase the compliance costs of conventional-fuel vessels and improve the relative competitiveness of electric ships.

“The electrification of inland shipping in China is already underway; what is needed now is smart policy to accelerate the transition,” it said.

 

Photo credit: CHUTTERSNAP on Unsplash
Published: 6 July, 2026

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Consortium validates grid-independent hydrogen power hub for ports

Consortium demonstrated that large vessels can already be powered at berth using existing hydrogen, battery, fuel cell and electrical technologies integrated into a modular floating system.

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Consortium validates grid-independent hydrogen power hub for ports

ELIRE Maritime and consortium partners on Monday (25 May) announced the successful completion of the UKRI-funded Clean Maritime Demonstrator Competition Round 6 (CMDC6) programme.

CMDC6 is a GBP 1 million (USD 1.3 million) feasibility programme and initiative delivered by Innovate UK in partnership with the UK Shipping Office for Reducing Emissions (UK SHORE), part of the UK Department for Transport.

The partners are Ricardo UK, Schneider Electric, Rux Energy UK, Triton Anchor Europe, OREC (Offshore Renewable Energy Catapult), and the University of Strathclyde. 

The programme successfully validated one of the world’s first fully grid-independent Hydrogen Floating Power Hub systems capable of delivering clean power directly to vessels at berth without requiring traditional shore-side grid infrastructure. 

The consortium demonstrated that large vessels can realistically be powered at berth today using existing hydrogen, battery, fuel cell, and electrical technologies integrated into a modular floating maritime system designed for rapid deployment across global ports.

The solution can now be deployed and would be expected to support the reduction of up to 500,000 tonnes of CO₂ emissions globally over the next decade through a scalable maritime clean energy infrastructure capable of operating independently from constrained port grids.

“Ports are under increasing pressure to decarbonise while facing major infrastructure constraints,” said Luke Jenkinson, Founder and CEO of ELIRE Maritime. 

“The Hydrogen Power Hub proves that ports do not need to wait years for grid upgrades to begin reducing emissions. We have validated a practical, scalable, and deployable system capable of delivering clean power directly where it is needed most.”

The Hydrogen Power Hub establishes a new category of maritime infrastructure by moving energy and power generation as well as storage onto water rather than relying on fixed, land-based systems constrained by grid access, cost, permitting, and land availability.

At full configuration, this particular validated system is capable of delivering 5MW of continuous clean power output directly to vessels at berth, enough to support medium-sized cruise vessels and other large maritime assets requiring both 6.6kV and 11kV shore power connections. This system integrates three modular hexagonal floating platforms with a combined 1,200 sqm footprint, approximately 45MWh of battery energy storage capacity, modular fuel cell systems, hydrogen-powered generation, onboard renewable generation, and advanced grid-forming AC/DC electrical architecture.

The consortium confirmed the platform can deliver approximately 91MWh of energy per week while supporting repeated vessel charging operations without requiring major civil works, land reclamation, or expensive grid reinforcement.

The system uses approximately 7,500 to 8,000kg of hydrogen weekly, stored within modular ISO-compatible low-pressure storage containers integrated directly into the floating infrastructure. The current layout accommodates seven onboard hydrogen tanks, with refuelling operations expected approximately twice weekly, enabling ports to adopt hydrogen incrementally without requiring permanent hydrogen infrastructure during early deployment phases.

Instead of relying on oversized generators, the platform uses modular 1.3MW fuel cells operating continuously throughout the week to gradually charge the onboard batteries before rapidly dispatching energy when vessels arrive at berth.

 

Photo credit: ELIRE Maritime
Published: 26 May, 2026

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Wah Kwong NatPower backs Greater Bay Area zero-carbon shipping initiative

Initiative will focus on deploying electric vessels and establishing shore-side battery swapping and charging infrastructure across key ports in Guangdong province and Hong Kong.

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Wah Kwong NatPower backs Greater Bay Area zero-carbon shipping initiative

Wah Kwong NatPower Marine (WK NatPower), a joint venture between Wah Kwong Maritime Transport and NatPower Marine, on Wednesday (20 May) said it is supporting a new initiative to develop zero-carbon shipping routes across China’s Greater Bay Area, following a recent broader Memorandum of Understanding (MoU) with Guangzhou Port Group.

Under this MoU, WK NatPower will support maritime electrification by advancing the development of shore power infrastructure across Hong Kong, Greater China, and Asia. 

The initiative will focus on deploying electric vessels and establishing shore-side battery swapping and charging infrastructure across key ports in Guangdong province and Hong Kong, supporting the transition toward low-emission shipping operations.

WK NatPower will play a central role in developing a scalable electrification network, supplying clean electricity to vessels both at berth and for propulsion. The project aligns with China’s “dual carbon” targets and reflects broader efforts to integrate energy systems and port infrastructure at scale.

Guangzhou Port, a major international hub, is advancing its green port strategy through expanded shore power deployment and increased use of clean energy. The collaboration aims to establish standardised charging and battery-swapping infrastructure across the Greater Bay Area, enabling the development of integrated zero-carbon shipping corridors.

The partners will also explore the use of alternative marine fuels, including methanol and ammonia, as part of a broader decarbonisation pathway.

“Delivering zero-carbon shipping at scale requires alignment across ports, energy providers and shipping lines,” said Vincent Ni, General Manager of WK NatPower. 

“This initiative represents a significant step toward building the infrastructure needed to support electrified maritime operations across the region.”

WK NatPower is part of a broader strategy to develop a comprehensive maritime electrification infrastructure network across Asia, combining Wah Kwong’s maritime expertise with NatPower Marine’s global energy infrastructure capabilities.

 

Photo credit: Wah Kwong NatPower Marine
Published: 21 May, 2026

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