Decarbonization Strategies in Maritime Fuel Systems
Summary
The maritime sector is responsible for roughly 3 per cent of global anthropogenic greenhouse-gas emissions and faces mounting pressure to align with international climate targets. Decarbonization strategies span a spectrum of interventions, from the substitution of conventional heavy fuel oil with low- or zero-carbon alternatives to the deployment of energy-saving technologies and operational measures. Alternative fuels under active investigation include bio-derived fuels, hydrogen, ammonia and synthetic electro-fuels, each presenting distinct advantages in energy density, emissions profile and infrastructure requirements. Complementary approaches encompass wind-assisted propulsion, hull form optimisation, waste-heat recovery and slow-steaming practices. Effective decarbonization also depends on the greening of upstream processes, ensuring that fuel production pathways draw on renewable energy and sustainable feedstocks. Policy instruments, financial incentives and regulatory frameworks, such as efficiency design indices and carbon pricing, are critical to accelerate uptake and overcome economic and logistical barriers. A holistic, multi-pronged strategy that integrates fuel innovation, vessel retrofitting, operational efficiency and supply-chain decarbonization is essential to achieve meaningful emissions reductions and safeguard the long-term viability of international shipping.
Research from Nature Portfolio
No recent Nature Portfolio content available.
Decarbonization Strategies in Maritime Fuel Systems publication trend
The graph below shows the total number of articles in decarbonization strategies in maritime fuel systems across all publications each year (not limited to Nature Index journals).
Technical terms
E-fuels: Synthetic fuels produced by combining captured carbon with hydrogen generated from renewable energy sources.
Life-cycle assessment (LCA): A systematic method for evaluating environmental impacts across all stages of a product’s life, from raw material extraction to end-use emissions.
Wind-assisted propulsion: Technologies such as kites and Flettner rotors that harness wind energy to supplement engine thrust and reduce fuel burn.
Dual-fuel engine: An engine designed to operate on two distinct fuels, typically a conventional bunker fuel and an alternative low-carbon fuel.
Well-to-wake: The comprehensive measure of greenhouse-gas emissions accounting for fuel production, distribution and combustion.
References
- Adopting different wind-assisted ship propulsion technologies as fleet retrofit: An agent-based modeling approach. Technological Forecasting and Social Change (2023).
- Assessment of full life-cycle air emissions of alternative shipping fuels. Journal of Cleaner Production (2018).
- Reduction of maritime GHG emissions and the potential role of E-fuels. Transportation Research Part D Transport and Environment (2021).
About these summaries
This Nature Research Intelligence Topic summary is created with the cited references and a large language model. We take care to ground generated text with facts, and have systems in place to gain human feedback on the overall quality of the process in line with our AI principles. We strive to create accurate and useful summaries for people unfamiliar with the research topic and that supports this goal. These pages are a beta release and will be updated as we learn how best to help people gain value from a research topic summary.
Turn complex research questions into confident strategic decisions
When you're under pressure to set direction, justify investment, or understand your competitive position, you need more than raw data — you need trusted insights you can act on.
Benchmark your performance against global peers using robust, methodologically sound analysis.
Combine quantitative metrics with qualitative expert insight to uncover strengths, gaps and emerging opportunities.
Gain tailored, decision-ready recommendations aligned to your strategic priorities.
Talk to us to learn more about our data dashboards and bespoke strategy reports.
Grow research skills, confidence and careers with training built for every stage of the research lifecycle.
Developed with Nature Portfolio journal Editors and internationally renowned experts. Discover three ways to learn:
Self-paced, online courses in convenient bite-sized units, covering key skills across scientific writing, publishing, grant writing, data analysis, and more.
Expert trainer-led workshops with hands-on exercises and real-time feedback across core research skills, delivered via interactive group sessions.
Editor-led workshops combining core principles in writing and publishing, personalised 1:1 feedback from Nature Portfolio Editors and hands-on exercises.
Explore course catalogues and workshop agendas, enquire about the options or request institutional pricing.