PC_2026_E_04 - Public consultation on economic input data for European electricity system modelling

Realistic cost assumptions are key for effective long-term electricity system modelling, including the one 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.

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.

Stakeholders are therefore encouraged to review the data per their relevant Member State(s) by:

• considering whether the figures reflect current market conditions and technological developments; and
• suggesting alternative values supported by evidence, if necessary.

Privacy statement.

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, as well as to help Member States in the procedure of fast-track approval of capacity mechanisms under the new State aid framework.