Update on industry testing for Wider Access and Project TERRE

Following National Grid ESO’s TERRE (Trans-European Replacement Reserves Exchange) derogation request, ELEXON has been working in collaboration with National Grid ESO to review plans for the Balancing and Settlement Code (BSC) central systems to ensure that we can deliver wider access to the GB Balancing Mechanism (BM) in December 2019.

What is Wider Access to the Balancing Mechanism and Project TERRE?

ELEXON has been working on changes to electricity Settlement systems so that independent aggregators can get access to the BM. Previously they had to be affiliated with a licenced supplier to use the BM. The changes will also allow independent aggregators and other BSC Parties to join Project TERRE which creates a European platform for trading reserve electricity with electricity transmission system operators in nine participating countries, including GB. 

Joining in the industry testing

We are aligning with National Grid ESO to conduct  separate industry testing of both wider access and TERRE processes (including balancing mechanism reporting) with relevant industry parties. We will be in touch with participants who have registered their interest in testing to understand their expectations and discuss timescales.  Once this process is complete, we will revise our industry test strategy and republish it later in October 2019.

During the process of re-planning we’ve taken into account the importance of providing files for industry testing, and are committed to supply files to industry parties, ensuring they have the opportunity to properly participate in the testing process.

For more information or to express your interest to participate in industry testing please contact: terre.testing@elexon.co.uk.

National Grid ESO’s derogation request

Project TERRE was due to launch by December 2019. National Grid ESO has raised a derogation request with energy regulator Ofgem to delay its participation to no later than December 2020.

More information

  • Background information on industry testing is available in our previous news article.
  • Visit our new web pages about Wider Access to the BM and Project TERRE. They show lots of useful information and background about these initaitves which help to create a smarter, more flexible energy system.

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