Under the auspices of Nordic Energy Research, the experience gathered through the three Nordic Flagship projects SHIFT, Flex4RES and Negative CO2is brought together to analyse the feasibility of future energy scenarios aiming at reaching net carbon neutrality in the Nordic region by 2040, in compliance with the well below 2°C carbon budgets (IPCC, 2014).
The integrated modelling approach adopted combines the temporal and spatial detail of the power and heat model Balmorel (Wiese et al., 2018) with the newly developed technology-rich energy system model TIMES-Nordic. Moreover, given the ambitious climate targets considered, a new technology module is developed to include the techno-economic characteristics of carbon capture, transport and storage options.
The model TIMES-Nordic belongs to the TIMES model family (Loulou et al., 2016), and is a techno-economic, partial equilibrium model assuming full foresight and perfectly competitive markets, with technological and economic projections until 2050. In particular, TIMES-Nordic provides a system assessment of the whole energy sector for Denmark, Norway and Sweden, including the representation of energy technologies and their competition in supplying the electricity, heat and transport demands, under the overall objective of total cost minimization.
Balmorel is a partial equilibrium model for simultaneous optimization of generation, transmission and consumption of electricity and heat, covering the power and district heating systems of the Nordic and Baltic countries, as well as for United Kingdom, Netherlands, Germany and Poland.
For this analysis, TIMES-Nordic and Balmorel are iteratively soft-linked until solution convergence. Specifically, for a certain climate target, TIMES-Nordic provides power and district heating demands, as well as CO2 emissions budgets, to Balmorel. The latter calculates at a higher geographical and temporal detail the fuel mix and investments in the power and district heating generation, as well as trade volume and electricity prices for the neighbouring power regions, which are fed back to TIMES-Nordic.
Prior to the iterative soft-linking, the two models are harmonized in terms of technical and economic characteristics of conversion plants and their stock capacity, exogenous fuel prices, biomass potentials, power transmission capacity, as well as energy and environmental policies whenever relevant.
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IPCC. Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Geneva, Switzerland, 2014.
OECD/IEA, Nordic Energy Research, Technical University of Denmark, Ea Energianalyse A/S, VTT Technical Research Centre of Finland, University of Iceland, Institute For Energy Technology, Profu Ab and IVL Swedish Environmental Research Institute. Nordic Energy Technology Perspectives. IEA Publishing, 2016.
Wiese, F., Bramstoft, R., Koduvere, H., Pizarro Alonso, A. R., Balyk, O., Kirkerud, J. G., Tveten, Å. G., Bolkesjø, T. F., Münster, M., Ravn, H. V. (2018). Balmorel open source energy system model. Energy Strategy Reviews, 20, 26–34. https://doi.org/10.1016/j.esr.2018.01.003
R. Loulou, G. Goldstein, A. Kanudia, A. Lettila, and U. Remme. Documentation for the TIMES Model Part I: TIMES Concepts and Theory, 2016.