Global multi-sector industry coalition SEA-LNG on Thursday (25 February) said an independent study has reconfirmed greenhouse gas (GHG) reductions of up to 23% are achievable now from using liquified natural gas (LNG) as a marine fuel, depending on the marine technology employed.
This is compared with the emissions of current oil-based marine fuels measured from Well-to-Wake (WtW). The 2nd Lifecycle GHG Emission Study on the use of LNG as a Marine Fuel from Sphera (formerly thinkstep) revisits its 2018/2019 research, using the latest available engine and supply chain data to bring the study fully up to date.
The study, commissioned by industry coalitions SEA-LNG and SGMF, was conducted according to ISO standards. It was also reviewed again by a panel of leading independent academic experts from key institutions in France, Germany, Japan and the USA.
The analysis concluded that, in addition to the considerable air quality benefits it delivers, LNG can “beyond question” contribute significantly to the International Maritime Organisation’s (IMO) GHG reduction targets.
“The updated Sphera study ensures that the industry has access to comprehensive research that is fully up to date,” said SEA-LNG Chairman Peter Keller.
“It is clear that LNG plays an important role in decarbonisation today with benefits available now. As we look ahead, it is essential that detailed emissions analysis from Well to Wake such as those performed for LNG are available for all alternative fuels contemplated, enabling shipowners to make the right decisions for their fleet.”
This comprehensive report uses the latest primary data to assess all major types of marine engines and global sources of supply with quality data provided by original equipment manufacturers including Caterpillar MaK, Caterpillar Solar Turbines, GE, MAN Energy Solutions, Rolls Royce (MTU), Wärtsilä, and Winterthur Gas & Diesel, as well as from ExxonMobil, Shell, and Total on the supply side.
Methane emissions from the supply chains as well as methane released during the onboard combustion process (methane slip) have been included in the analysis.
“Often based on outdated data, methane slip has become an overused argument for those wishing to justify inaction. The Sphera study underlines the advances being made to counteract this concern. Its analysis provides independent confirmation that, by 2030, methane slip will have been virtually eliminated as technological improvements continue,” added Sphera.
“The facts consistently confirm that there is no deep-sea alternative fuel in the short to medium term other than LNG. LNG remains the clear starting point for a carbon-neutral future for shipping, especially as the pathway forward includes bio and synthetic products.”
Importantly, the study also reaffirms that the use of LNG as a marine fuel has significant air quality benefits, with local emissions, such as sulphur oxides (SOx), nitrogen oxides (NOx) and particulate matter (PM), all close to zero.
“We are confident this work will provide IMO with solid information contributing to its regulatory decisions. SGMF will continue to provide up-to-date data not only for LNG but for all candidate gaseous fuels under its remit, including ammonia and hydrogen,” added Samir Bailouni, chairman, Society for Gas as a Marine Fuel (SGMF).
“Today, the clear choice for an immediate and significant reduction in emissions is LNG, which is widely available and fully compliant with existing regulations. This is reflected in the rapidly increasing adoption of LNG in the deep-sea container, bulk and tanker sectors, a trend we expect to accelerate even as the more challenging horizon fuels are brought safely and sustainably into the mix.”
The transition to bio and eventually synthetic LNG is straightforward, as the existing infrastructure and engine technology remain the same. The standards, guidelines and operational protocols are already in place. It also provides an asset base that can be used by other alternative fuels, when and if they become commercially viable.
“The aim of the study was to provide an update to the research conducted in 2018 / 2019. Using the latest available engine and supply chain data, including planned developments for the reduction of methane emissions along the entire supply chain, Sphera has analysed the implications for well-to-wake GHG emissions,” added Dr Oliver Schuller, Director Sustainability Consulting, Sphera.
“Being conducted to international ISO standards and peer-reviewed by four genuine experts, we are confident that this represents the definitive view of lifecycle analysis for LNG as a marine fuel available today.”
The full 2nd Lifecycle GHG Emission Study on the use of LNG as a Marine Fuel study can be accessed here.
Related: Sea-LNG: Bio-LNG drop-in bunker fuels extend GHG compliance for green finance loans
Related: SEA-LNG 2021 Outlook: LNG transitions from niche to mainstream marine fuel
Related: SEA-LNG Report: LNG – The only viable fuel
Photo credit and source: SEA-LNG
Published: 16 April, 2021
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