Multi-Model Study Shows Wind Power Will Dominate Nordic Power Sector by 2050, But Pathways Diverge on Details
A multi-model study comparing eight structurally diverse energy system models finds broad consensus that wind power will form the backbone of climate-neutral power systems in Denmark, Finland, Norway, and Sweden by 2050. The research compared model outputs — without harmonizing inputs — across electricity demand, generation capacity, CCS deployment, and CO2 emissions for 2030, 2040, and 2050. The findings highlight both where policymakers can rely on consistent model guidance and where significant uncertainty remains.
Researchers from multiple institutions compared eight independently developed energy system models to assess pathways toward climate-neutral power sectors in the four Nordic countries. Rather than harmonizing model inputs, the study compared outputs on a common reporting basis, reflecting how modelling evidence is typically encountered in real policy contexts. Across all models, wind power — predominantly onshore but supplemented by offshore wind in some countries — emerged as the clearest and most consistent finding, projected to anchor Nordic electricity systems by mid-century. However, substantial variation appeared across models in projected installed capacities, the role of carbon capture and storage (CCS), nuclear energy outcomes, and residual CO2 emissions levels. The authors attribute these divergences to differing assumptions about renewable resource potentials, technology availability, policy constraints, sectoral and geographic scope, and how climate-neutrality targets are defined and accounted for. The study concludes that non-harmonized model comparisons remain valuable for policy analysis by distinguishing robust findings from assumption-sensitive ones. It also calls on modelers and policymakers to clearly report model scope, technology representation, policy constraints, and emissions-accounting boundaries when presenting results.
What's missing
The study is a preprint posted to arXiv and has not yet undergone formal peer review, which limits the certainty of its conclusions. The study does not assess the economic costs or feasibility of the identified transition pathways, nor does it address social or political barriers to wind expansion.
What different sources said
- arXiv physicsCenter
Diverse efforts in the same direction: A multi-model comparison of climate-neutrality power sector pathways for the Nordic countries
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