European resource adequacy assessment

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What is it?

​​​​​​​​​​​​​​​​​The European resource adequacy assessment describes the expected level of security of supply for a ten-year horizon. ENTSO-E runs a simulation model based on data provided by the Transmission System Operators (TSOs) for demand, supply and the power grid.

ENTSO-E currently performs the European Mid-term Adequacy Forecast (MAF) with a ten-year time horizon. By 2021, a European resource adequacy assessment (ERAA) will gradually be implemented, and may be complemented by national resource adequacy assessments.

Member States set a reliability standard based on the value of lost load and the cost of new entry for generation or demand response. The reliability standard indicates the necessary level of security of supply of the Member State.

By comparing these results, resource adequacy concerns can be identified, and the need for additional measures (e.g. temporary capacity mechanisms) assessed.

The European resource adequacy assessment is based on the two methodologies below​.​​

What 's the role of ACER?

ACER approves a first version of these methodologies in line with the Electricity Regulation

​Following their implementation, ACER will also advis​e on future amendments and improvements.