Decarbonization Strategies in Energy and Transportation Systems

Global efforts to mitigate climate change have focused intensively on reducing carbon dioxide emissions from both energy production and transport. In the energy sector, strategies encompass a shift towards renewable electricity generation—principally wind, solar and hydropower—coupled with the deployment of carbon capture and storage to abate residual emissions from fossil-fuel plants. System integration is enhanced by advanced energy networks, including hydrogen transport corridors that enable long-distance energy transfer, and by sector coupling that links power, heat and mobility demands. In parallel, efficiency improvements across generation, transmission and end-use devices reduce overall energy intensity. In transportation, the largest single source of direct emissions, deep decarbonization relies on vehicle electrification, the scaling up of low-carbon fuels such as biofuels and green hydrogen, and modal shifts towards public and active transport. Behavioural and policy interventions—ranging from stringent vehicle emissions standards to urban-planning measures—further reinforce technological change. Achieving near-zero emissions in both sectors depends on integrated planning, supportive market frameworks, and investment in infrastructure for charging, hydrogen distribution and carbon storage. Synergistic deployment of these strategies is essential to meet international climate targets and to ensure resilient, cost-effective pathways to net-zero.

Research from Nature Portfolio

Recent modelling work has employed global integrated assessment frameworks to explore scenarios for achieving a zero-emissions transportation sector consistent with limiting temperature rise to 1.5 °C. These studies demonstrate that electrification of road vehicles delivers the greatest emissions reductions, while hydrogen and advanced biofuels are pivotal for aviation and shipping. Ambitious pathways require simultaneous phase-out schedules for fossil fuels and rapid investment in infrastructure, with important feedbacks on electricity demand and fuel supply chains. Other research has developed region-specific transport-energy models using the Avoid–Shift–Improve framework to identify policy packages that balance infrastructure deployment, technology adoption and behavioural measures. Findings indicate that tailored combinations of vehicle efficiency standards, modal shifts, electrification incentives and urban design can synergise to drive deep decarbonization of ground transport within national carbon-neutrality goals.

Decarbonization Strategies in Energy and Transportation Systems publication trend

The graph below shows the total number of articles in decarbonization strategies in energy and transportation systems across all publications each year (not limited to Nature Index journals).

Technical terms

Decarbonization: The process of reducing carbon dioxide emissions from energy and industrial systems through low-carbon technologies and efficiency improvements.

Electrification: Replacing devices and processes powered by fossil fuels with electric alternatives, such as electric vehicles and heat pumps.

Integrated assessment model (IAM): A computational framework that links energy, economic and environmental systems to evaluate long-term climate mitigation scenarios.

Carbon capture and storage (CCS): Technologies that capture CO₂ emissions at source and store them in geological formations to prevent atmospheric release.

Biofuel: A renewable fuel derived from biological materials, including first- and second-generation sources, used to displace fossil fuels in transport and industry.

References

1. H2 and CO2 network strategies for the European energy system. Nature Energy (2025).
2. Integrated assessment modeling of a zero-emissions global transportation sector. Nature Communications (2024).
3. Technology pathways, efficiency gains and price implications of decarbonising residential heat in the UK. Energy Strategy Reviews (2023).
4. Cross-cutting scenarios and strategies for designing decarbonization pathways in the transport sector toward carbon neutrality. Nature Communications (2022).
5. Developing policy packages for low-carbon passenger transport: A mixed methods analysis of trade-offs and synergies. Ecological Economics (2022).