ancillary service

Also defined in

• Proposal for a DIRECTIVE OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on common rules for the internal market in… 52016PC0864R(01), Article 2
  a service necessary for the operation of a transmission or distribution system ð including balancing and non-frequency ancillary services but not congestion management ï
• Regulation (EU) 2019/943 of the European Parliament and of the Council of 5 June 2019 on the internal market for… 32019R0943, Article 2, point (60)
  ancillary service as defined in point (48) of Article 2 of Directive (EU) 2019/944
• Directive (EU) 2019/944 of the European Parliament and of the Council of 5 June 2019 on common rules for the internal… 32019L0944, Article 2, point (48)
  a service necessary for the operation of a transmission or distribution system, including balancing and non-frequency ancillary services, but not including congestion management;
• Directive 2014/17/EU of the European Parliament and of the Council of 4 February 2014 on credit agreements for… 32014L0017, Article 4, point (4)
  a service offered to the consumer in conjunction with the credit agreement.
• Directive 2009/72/EC of the European Parliament and of the Council of 13 July 2009 concerning common rules for the… 32009L0072, Article 2, point (17)
  a service necessary for the operation of a transmission or distribution system;
• Directive 2004/39/EC of the European Parliament and of the Council of 21 April 2004 on markets in financial instruments… 32004L0039, Article 4(1), point (3)
  any of the services listed in Section B of Annex I;