What is the difference between a Control area, a Bidding zone and a Country in the data views?

On the previous version of the transparency platform, data was published on a country basis. In line with EU Regulation No 543/2013, data must now be published by country, and also either under a control area or a bidding zone.

  • Control area: a coherent part of the interconnected system, operated by a single system operator.
  • Bidding zone: the largest geographical area within which market participants are able to exchange energy without capacity allocation
  • Country: respecting internationally recognized geo-political borders



  • Control area: Germany (DE) has four control areas under the jurisdiction of four TSOs (50Hertz, Amprion, TenneT Germany, TransnetBW.
  • Bidding zone: Ireland (IE - SEM), which includes both Northern Ireland and the Republic of Ireland
  • Country: United Kingdom, including Northern Ireland (UK)
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