General

  • Auctions take place at different predefined times, depending on the product type
  • The¬†auction calendar provides an overview of the auction times
  • Auctions are published in due time before the start of the respective auction
  • Depending on the product type, two different auction algorithms are used


    • Ascending clock auctions for long-term products (yearly, quarterly, monthly)
    • Uniform price auctions for short-term products (day-ahead, within-day)

Auction types

Ascending clock auctions for long-term products (yearly, quarterly, monthly)

  • Auctions have (multiple) bidding rounds, the number of bidding rounds depends on the demand
  • A bid for a certain amount of capacity at a given price can be submitted in each bidding round
  • The duration of the first bidding round is three hours, all following bidding rounds are one hour
  • The price steps of the auction are set by the TSOs


Uniform price auctions for short-term products (day-ahead)

  • Auctions have one single bidding round
  • A Shipper can place up to 10 bids per auction
  • All bids by all shippers are evaluated in a descending order according to their surcharge
  • The lowest surcharge of all successful bids is considered the clearing surcharge