The CircEUlar project aims to understand the dynamics and levers for societal transformation towards a net-zero emission circular economy.
CircEUlar will develop new modelling approaches for analysing circularity from a systems perspective accounting for:
- dematerialisation and the transition to a service-based economy to limit material stock growth;
- lifetime extension of material stocks through repair, maintenance, reuse;
- waste treatment and material recycling.
CircEUlar’s approach will be comprehensive, combining new data and modelling of economy-wide material stocks and flows, greenhouse gas (GHG) emissions, and industrial value chains across interlinked sectors, with deep-dive analysis of mobility and buildings as material-intensive demand sectors. These two focus areas have large material stocks, potential for circular transformation, and strong dependence on both circular consumption and production practices.
CircEUlar will also focus on digitalisation as a potential enabler of dematerialisation and supply chain circularity. CircEUlar integrates multiple fields of data, knowledge and expertise including:
- empirical analysis of firm and consumer propensities towards circular economy measures;
- industry input on process-level innovations and circular economy business models;
- modelling analysis of economy-wide material stocks and flows, and policy levers of change towards societal transformation.
CircEUlar will integrate new insights on circular economy potentials and impacts into EU and global modelling frameworks for:
- analysing alternative pathways to net-zero GHG emissions;
- testing effective policy levers for both circular production and consumption;
- assessing outcomes for climate, environment, economy and society, in line with European Green Deal objectives.
Partners
- The International Institute for Applied Systems Analysis (IIASA) (Austria) - Coordinator
- University of Natural Resources and Life Sciences (BOKU) (Austria)
- Centro Euro-Mediterraneo sui Cambiamenti Climatici (CMCC) (Italy)
- Ludwig-Maximilians Universität München (LMU) (Germany)
- Norwegian University of Science and Technology (NTNU) (Norway)
- University of Groningen (RUG) (Netherlands)
- T6 Ecosystems (T6) (Italy)
- Technische Universität Berlin (TUB) (Germany)
- Mercator Research Institute on Global Commons and Climate Change (MCC) (Germany)
Associated Partners
Funding acknowledgements
Funded by the European Union under grant agreement No. 101056810. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or HORIZON-RIA - HORIZON Research and Innovation Actions. Neither the European Union nor the granting authority can be held responsible for them.
Published papers:
Fan, Y.V., Wilson, C. , Andrijevic, M. , Carlsen, H., & Joshi, S. (2025). Digital transformation in the Shared Socioeconomic Pathways. npj Climate Action 4 e79. 10.1038/s44168-025-00283-w.
Streeck, J., Baumgart, A., Haberl, H., Krausmann, F., Cai, B., Fishman, T., Lanau, M., Berrill, P., Cao, Z., Deetman, S., Frantz, D., Krey, V. , Mastrucci, A. , Miatto, A., Pauliuk, S., Rousseau, L.S.A., Saxe, S., Densley Tingley, D., Ünlü, G., & Wiedenhofer, D. (2025). Quantifying material stocks in long-lived products: Challenges and improvements for informing sustainable resource use strategies. Resources, Conservation and Recycling 221 e108324. 10.1016/j.resconrec.2025.108324.
Wilson, C. , Verdolini, E., Kumar, P., & Eker, S. (2025). Expert Workshop on Digitalisation Narratives and Climate Change Mitigation: Synthesis Report. IIASA Report. Laxenburg, Austria: IIASA 10.5281/zenodo.15024068.
Mastrucci, A. , Guo, F. , Zhong, X., Maczek, F., & van Ruijven, B. (2024). Circular strategies for building sector decarbonization in China: A scenario analysis. Journal of Industrial Ecology 10.1111/jiec.13523.
Creutzig, F., Simoes, S., Leipold, S., Berrill, P., Azevedo, I., Edelenbosch, O., Fishman, T., Haberl, H., Hertwich, E., Krey, V. , Lima, A., Makov, T., Mastrucci, A. , Milojevic-Dupont, N., Nachtigall, F., Pauliuk, S., Silva, M., Verdolini, E., van Vuuren, D., Wagner, F., Wiedenhofer, D., & Wilson, C. (2024). Demand-side strategies key for mitigating material impacts of energy transitions. Nature Climate Change 14 561-572. 10.1038/s41558-024-02016-z.
Joshi, S., Zakeri, B. , Mittal, S., Mastrucci, A. , Holloway, P., Krey, V. , Shukla, P.R., O’Gallachoir, B., & Glynn, J. (2024). Global high-resolution growth projections dataset for rooftop area consistent with the shared socioeconomic pathways, 2020–2050. Scientific Data 11 (1) 10.1038/s41597-024-03378-x.
Joshi, S., Zakeri, B. , Mittal, S., Mastrucci, A. , Holloway, P., Krey, V. , Shukla, P.R, O'Gallachoir, B., & Glynn, J. (2024). Global high-resolution growth projections dataset for rooftop area consistent with the shared socioeconomic pathways, 2020-2050. 10.5281/zenodo.8325057.
Fishman, T. , Mastrucci, A. , Peled, Y., Saxe, S., & van Ruijven, B. (2024). RASMI: Global ranges of building material intensities differentiated by region, structure, and function. Scientific Data 11 (1) e418. 10.1038/s41597-024-03190-7.
News
04 June 2024
Innovative demand strategies for clean energy
21 May 2024
IIASA is among the scientific partners of the Vienna Climate Biennale with CircEUlar project
30 March 2024
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