rec_19

(19) Bidding zones reflecting supply and demand distribution are a cornerstone of market-based electricity trading and are a prerequisite for reaching the full potential of capacity allocation methods including the flow-based approach. Bidding zones therefore should be defined in a manner to ensure market liquidity, efficient congestion management and overall market efficiency. When a review of an existing bidding zone configuration is launched by a single regulatory authority or transmission system operator with the approval of its competent regulatory authority, for the bidding zones inside the transmission system operator's control area, if the bidding zone configuration has negligible impact on neighbouring transmission system operators' control areas, including interconnectors, and the review of bidding zone configuration is necessary to improve efficiency, to maximise cross-border trading opportunities or to maintain operational security, the transmission system operator in the relevant control area and the competent regulatory authority should be, respectively, the only transmission system operator and the only regulatory authority participating in the review. The relevant transmission system operator and the competent regulatory authority should give the neighbouring transmission system operators prior notice of the review and the results of the review should be published. It should be possible to launch a regional bidding zone review following the technical report on congestion in line with Article 14 of this Regulation or in accordance with existing procedures laid down in Regulation (EU) 2015/1222.

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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.