TERRE Delayed: Elexon response to National Grid ESO’s announcement

On Friday, National Grid ESO announced a delay to implementing the necessary changes that will enable industry parties in Great Britain to participate in the Project Trans-European Replacement Reserve Exchange (TERRE).

The delay is expected until the end of October at the earliest, and is the consequence of constraints and uncertainties owing to the COVID-19 pandemic.

Elexon is now working closely with National Grid ESO to assess the impact of the delay and establish a revised plan to meet the new timescales, which we will share once formalised. Our industry testing team will be in touch with relevant parties who are participating in industry testing separately to discuss the impact of re-planning.

Reasons for the delay

National Grid has delayed GB Go-Live for Project TERRE for two reasons:

  • to allow core colleagues to focus operational roles.
  • the French TSO, Réseau de Transport d’Électricité (RTE), has already taken the decision to delay implementation to later in the year and GB cannot deploy access to the European RR market using the Libra platform until it is also deployed in France.

About Project TERRE

Project TERRE is a major, Europe-wide programme designed to establish a new replacement reserve balancing product in participating countries. The ‘central’ TERRE platform went live on 6 January 2020. It was launched by Transmission System Operators (TSOs) from eight countries, and so far only ČEPS a.s. (Czech Republic) and Red Eléctrica de España S.A. (REE ) Spain have joined. The remaining countries will be joining in waves until 2021/22. Those participating include Great Britain through National Grid ESO, France through its transmission system operator RTE, as well as Spain, Portugal, Poland, Czech Republic, Switzerland and Italy.

Full announcement

The full TERRE delay announcement is available on National Grid’s website.  


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