Electricity SO Reform

The System Operator (SO) has a key role in planning and operating the electricity system. The role has already grown over recent years.

Through our Integrated Transmission and Regulation (ITPR) project, we have already made changes to the SO’s role to support more integrated and efficient planning and delivery of transmission investment. The SO has also taken on the role of the Electricity Market Reform (EMR) delivery body.

We think further change is needed to:

  1. The SO’s roles, to ensure it is well placed to both respond to and facilitate the transformation of the electricity system. These changes include both new roles for the SO and clarifying our expectations of how it will undertake existing roles.
  2. The structure of the SO, to mitigate conflicts of interest. We are proposing further separation of the SO within National Grid Group, with a level of independence and transparency to make industry confident in its impartiality.

Publications and updates

  • Published: 28th Jun 2019
  • Reports and plans
  • 1 Associated documents
We are publishing the ESO Performance Panel’s end of year evaluation report on the Electricity System Operator’s performance for the 2018-2019 regulatory period.

  • Published: 26th Jun 2019
  • Closing: 24th Jul 2019
  • Consultations and responses
  • 1 Associated documents
The Gas and Electricity Markets Authority proposes to modify the special conditions of the electricity transmission licence held by National Grid Electricity System Operator Limited.

  • Published: 1st May 2019
  • Open letters and correspondence
  • 1 Associated documents
We have reviewed the ESO Forward Plan 2019-21 and the stakeholder responses the ESO received as part of its consultation and have provided our view of whether the Forward Plan meets our expectations. This letter outlines Ofgem’s Formal Opinion of the ESO...

  • Published: 12th Apr 2019
  • Open letters and correspondence
  • 1 Associated documents
A call for evidence asking for stakeholders feedback on the ESO’s performance during the 2018-2019 period, to inform the end of year incentives review.

  • Published: 1st Apr 2019
  • Decisions
  • 3 Associated documents
As of 1 April 2019, the partial transfer of NGET’s electricity transmission licence to NGESO will take effect. NGESO is now the holder of its own, distinct electricity transmission licence.

  • Published: 1st Apr 2019
  • Decisions
  • 3 Associated documents
As of 1 April 2019 , the partial transfer of NGET’s electricity transmission licence to NGESO will take effect. NGESO is now the holder of its own, distinct electricity transmission licence.

  • Published: 25th Mar 2019
  • Decisions, Guidance
  • 3 Associated documents
This is our decision on the regulatory and incentives framework for the Electricity System Operator for 2019-20.

  • Published: 15th Mar 2019
  • Reports and plans
  • 1 Associated documents
We are publishing the findings from an independent review of the Electricity System Operator’s regulatory and incentives framework that was introduced in April 2018.

  • Published: 13th Mar 2019
  • Decisions
  • 1 Associated documents
See our decision on conditions precedent prior to the partial transfer of NGET's electricity transmission licence from NGET to NGESO.

  • Published: 6th Mar 2019
  • Open letters and correspondence
  • 1 Associated documents
This document contains the ESO Performance Panel's views on the Electricity System Operator’s Forward Plan consultation 2019-21.

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