ACER will consult on economic input data to improve European electricity system modelling
What is it about?
On 27 February 2026, ACER will open a public consultation on economic input data to improve electricity system modelling across Europe. The aim of this consultation is to ensure that the inputs used in European-level modelling are robust, transparent and properly grounded in national market realities.
Why are we consulting?
Realistic cost assumptions are key for effective long-term electricity system modelling, including the one used by ENTSO-E for the European Resource Adequacy Assessment (ERAA). These models are used to assess future investment needs, such as whether new power generation or flexibility resources are likely to be built, and whether existing power plants are expected to remain economically viable.
ACER has recently commissioned a consultancy study on investment parameters. As part of it, the consultant delivered a comprehensive EU-wide economic dataset for electricity system modelling. This new dataset shows estimated investments and operational costs for different power generation technologies and demand-side flexibility at Member State level.
Get involved!
Stakeholders are encouraged to review the data for their relevant Member State(s), assess whether it reflects current market and technological developments and propose evidence-based alternatives.
The consultation will run from 27 February 2026 until 27 March 2026.
What’s next?
These figures will help shape how Europe’s power system develops in the years ahead.
ACER will examine the feedback received and revise the dataset to ensure accuracy and credibility. The finalised data will then be used to improve future ERAA modelling by ENTSO-E, as well as to help Member States in the procedure of fast-track approval of capacity mechanisms under the new State aid framework.