rec_31

(31) To reflect the divergent principles of optimising bidding zones without jeopardising liquid markets and grid investments two options should be provided for in order to address congestion. Member States should be able to choose between a reconfiguration of their bidding zone or measures such as grid reinforcement and grid optimisation. The starting point for such a decision should be the identification of long-term structural congestions by the transmission system operator or operators of a Member State, by a report by the European Network of Transmission System Operators for Electricity (the ‘ENTSO for Electricity’) on congestion or by a bidding zone review. Member States should first try to find a common solution on how to best address congestion. In the course of doing so Member States might adopt multinational or national action plans to address congestion. For Member States which adopt an action plan to address congestion, a phase-in period in the form of a linear trajectory for the opening of interconnectors should apply. At the end of the implementation of such an action plan, Member States should have a possibility to choose whether to opt for a reconfiguration of the bidding zone(s) or whether to opt for addressing remaining congestion through remedial actions for which they bear the costs. In the latter case their bidding zone should not be reconfigured against the will of that Member State, provided that the minimum capacity is reached. The minimum level of capacity that should be used in coordinated capacity calculation should be a percentage of the capacity of a critical network element, as defined following the selection process under Regulation (EU) 2015/1222, after, or, in the case of a flow-based approach, while, respecting the operational security limits in contingency situations. A Commission decision on the configuration of a bidding zone should be possible as a measure of last resort and should only amend the configuration of a bidding zone in those Member States which have opted to split the bidding zone or which have not reached the minimum level of the capacity.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-30 · Text as adopted (Official Journal); later amendments are not incorporated in this text.