On 4 August 2025, ACER received two proposals from all nominated electricity market operators (NEMOs) to amend the harmonised maximum and minimum clearing price (HMMCP) methodologies for the European day-ahead and intraday markets, respectively.
These methodologies, set under the Capacity Allocation and Congestion Management Regulation, outline how automatic price adjustments work in Europe’s electricity day-ahead and intraday markets. They also define the maximum and minimum price limits (the so called ‘maximum and minimum clearing prices’) for the European day-ahead and intraday markets.
Why amend the methodologies?
NEMOs propose to include an additional metric (based on market liquidity) to avoid potential triggering of the automatic price adjustment mechanisms in cases of low liquidity in the European day-ahead and intraday markets.
What are the next steps?
ACER expects to decide on the methodologies by February 2026.
Interested parties are encouraged to submit comments or questions to ACER-ELE-2025-008@acer.europa.eu by 31 October 2025.
