COMETS – Co-Management of Energy and Transport Systems

March 21, 2017

The transport sector is the major challenge in establishing a Denmark independent of fossil fuels. As the fossil fuels are phased out, the transport sector must be increasingly integrated in the rest of the energy system.

Electric vehicles are charged and may supply the electric-grid, in the production of biofuels electricity and heat is used, while waste heat from production can be used for district heating and finally hydrogen can be a new storage medium. The transport sector will also have to compete with other sectors for biomass and other limited resources.

In Denmark, we currently have a unique opportunity to combine two large model investments in transport and energy: Danish Energy Agency’s new energy model (TIMES-DK) and the national transport model (LTM) developed by the DTU Transport.

This opportunity is being harnessed in the COMETS project, creating a new tool for the analysis of integrating the transport sector in the energy system. A tool beyond state of art, which can analyse how the transport sector influence the overall energy system in much greater detail and variety, and include assessments of the impact of infrastructure investments and modal shift.

Public hearings and interactive stakeholder involvement will secure that the developed model tools and scenarios are relevant and have impact on the development of the future transport and energy system.

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The Project COMETS

COMETS is to develop a decision tool for identifying and optimizing policies and investments within an integrated energy system framework incorporating the transportation sector, supporting Denmark’s 2050 goal of becoming independent of fossil fuels.

With the transport sector being powered by an increasing share of renewable fuels, it will become increasingly integrated into the energy system: biofuels, hydrogen, electricity, and other alternative fuels have production chains with strong linkages to the broader energy system.

Some of the fuels can function as energy storage adding flexibility in the production of electricity and heat, and excess heat from the production of the fuels can be used for district heating or industrial processes Current energy system models cannot fully handle interactions between the energy and the transport systems, limiting their ability to model changes that affect both systems, e.g., modal shifts in transportation, transportation time optimization, and the influence of transport infrastructure investments on the energy system.

This project will develop soft-links between a newly developed behavior-based transport model and an integrated energy system model for Denmark. The combined modeling system will then be used to analyze different policy scenarios for energy and transportation with a participatory approach involving relevant stakeholders.

More about COMETS