ICE Endex

GasTerra Gas Storage Service

ICE Endex auctions gas storage services in the Netherlands on behalf of GasTerra. Storage services are sold as Standard Bundled Units (SBUs) which allow market participants to inject or withdraw natural gas into and from a virtual storage facility with delivery taking place on the Title Transfer Facility (TTF) in the Netherlands.

Via ICE Endex, GasTerra offers Standard Bundled Units (SBUs) for auction. One SBU represents the right to have gas injected, to keep gas in storage and to withdraw gas from a virtual storage facility.

Each SBU represents the following:

  • Contract period: from 1 April up to and including 31 March the following year
  • Available storage space: 1440 kWh
  • Amount of gas in storage at the contract start date at 06:00 hours (CET):0 kWh
  • Injection capacity: 0.3333 kWh/h
  • Withdrawal capacity: 1.0 kWh/h
  • Injection factor: 1.0
  • Withdrawal factor is calculated as follows:
    • In case the actual amount of gas in storage at the end of hour H-1 is between 0 kWh and 864 kWh, the withdrawal factor increases linear from 0.6 to 1.0
    • In case the actual amount of gas in storage at the end of hour H-1 is between 864 kWh and 1440 kWh, the withdrawal factor equals 1.0
  • Delivery point: Title Transfer Facility (TTF) of Gas Transport Services in the Netherlands


The upcoming storage year, almost one billion cubic meter of gas storage, in the form of 6,784,336 SBUs, is offered under market based conditions. The SBUs for Contract Period 2020/2021 are split between two auctions: on 27 November 2019 and 29 January 2020. The auctions take place via a fixed price mechanism, providing storage capacity starting 1 April 2020 and ending 31 March 2021.

Auction Procedure

ICE Endex has developed a custom built single-sided auction mechanism which ensures that the SBUs are sold in a transparent, independent and market-based way. Market participants bidding in the auction remain completely anonymous and all information regarding participant's auction bids remains confidential.

A notary monitors the auction process to ensure that it is conducted in a transparent and non-discriminatory manner. All information pertaining to bidders and their bids is only accessible to ICE Endex and the notary. GasTerra does not have access to this information and neither does it have any involvement in the auction process. The auction process, the rules for price determination and allocation are further detailed in the Auction Rules. ICE Endex facilitates the day-to-day nomination processes as well as the financial settlement of the contracts.

For more information please contact us via [email protected]

Auction Schedule

Auction Date Number of SBUs per Auction

27 November 2019

3,392,168 SBUs

29 January 2020

3,392,168 SBUs

Qualification Requirements

For the qualification process and requirements please refer to Article II of the Auction Rules. The deadline for submitting the required qualification documents to participate in the 29 January 2020 auction is 15 January 2020.

Market Information