Imbalance Settlement Group (ISG)

The ISG is responsible for overseeing the operation of the Imbalance Settlement processes and systems in the Central Volume Allocation (CVA) Market.

Remote meetings due to COVID-19

We have decided that we will not be re-opening the Elexon office to external visitors until at least the beginning of 2021 and we will therefore continue to hold all meetings, committees and workgroups virtually. This was decided after viewing the feedback and results from an internal and external survey. 

To recognise this prolonged change to our working arrangements, we have created a set of principles to be followed when holding online meetings. These principles will be highlighted at the beginning of each meeting to hopefully improve your virtual meeting experience.

Join the committee

Three vacancies have become available for the ISG. If you are interested please complete the application form on our website, setting out your relevant experience/expertise for the Committee(s) you are interested in. 

2021 Meeting dates

The ISG publishes the proposed agenda approximately 5 working days ahead of each meeting. A full collection of documents are circulated on Paper Day.


Papers published

Meeting Date


29 December 2020

5 January 2021


26 January 2021

2 February 2021


23 February 2021

2 March 2021


30 March 2021

6 April 2021


27 April 2021

4 May 2021


25 May 2021

1 June 2021


29 June 2021

6 July 2021


27 July 2021

3 August 2021

 September 31 August 2021 7 September 2021
 October 28 September 2021 5 October 2021
 November 26 October 2021 2 November 2021
 Decemember 30 November 2021 7 December 2021

Attending ISG Meetings

Please contact the ISG secretary if you want to attend the open session of any ISG meeting.

ISG processes and systems

The processes are associated with the operation of the Central Services Agents:

  • Balancing Mechanism Reporting Agent (BMRA),
  • Central Data Collection Agent (CDCA),
  • Central Registration Agent,
  • Energy Contract Volume Aggregation Agent (ECVAA),
  • Settlement Administration Agent (SAA),
  • Funds Administration Agent (FAA)
  • Interconnector Administrator.

Roles and responsibilities

The roles and responsibilities of the ISG are in the Terms of Reference


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