Rough gas storage undertakings review

The CMA reviewed the Rough undertakings, relating to the completed acquisition by Centrica of Dynegy Storage and Dynegy Onshore Processing UK.

Administrative timetable

  • Published on 5 November 2015, in accordance with paragraph 3.18 of CMA 11. Any revisions made to the timetable will be published on this website.
Date Action
May 2016 Notice of variation/signed undertakings
April 2016 Final deadline for all parties’ responses before notice of variation/signed undertakings
April 2016 Final report decision/notice of intention to vary published
March 2016 Final deadline for all parties’ responses before final report
4 March 2016 Provisional decision and notice of possible variation published
January 2016 Deadline for all parties’ responses/submissions required before provisional findings
November 2015 Publication of initial issues statement; and initial information requests


Varied undertakings accepted

26 May 2016: The CMA has accepted varied undertakings from Centrica and Centrica Storage Limited relating to the Rough gas storage facility.

Decision to vary undertakings

22 April 2016: The CMA has decided that undertakings relating to the Rough gas storage facility should be varied.

Responses to provisional decision to vary undertakings

Provisional decision to vary undertakings

4 March 2016: The CMA has provisionally decided that undertakings given by Centrica plc and Centrica Storage Ltd, relating to the Rough gas storage facility, should be varied.

Hearing summaries

As part of its evidence-gathering process, the CMA is holding formal hearings with a range of industry participants and interested parties.

Responses to issues statement

Issues statement

5 November 2015: The issues statement identifies the issues the panel members propose to focus on and invites views on these, as well as any areas not covered.

Review group appointed

27 October 2015: The CMA has appointed the group for the review of the undertakings. Jon Stern was appointed on 27 November 2015.

Martin Cave (Chair), Marisa Cassoni, Roger Finbow and Jon Stern.

Decision to undertake review

27 October 2015: Following consultation, the CMA has decided to review the undertakings in relation to the completed acquisition by Centrica plc of Dynegy Storage Ltd and Dynegy Onshore Processing UK Ltd (the Rough undertakings).

The review will consider whether there has been any change of circumstances such that any of the current undertakings should be varied or revoked.

Published 26 February 2016
Last updated 26 May 2016 + show all updates
  1. Varied undertakings published.
  2. Final decision published.
  3. Responses to provisional decision published.
  4. Provisional decision and hearing summaries published.
  5. Timetable updated.