Grid Code

The Grid Code covers all material technical aspects relating to connections to, and the operation and use of, the national electricity transmission system.

The Grid Code is available to view on the National Grid Electricity Transmission website.

Grid Code Modifications

Our decisions on proposed changes to this code are included below.

Publications and updates

  • Published: 16th May 2018
  • Decisions
  • 1 Associated documents
We have approved this modification to the Grid Code.

  • Published: 16th May 2018
  • Decisions
  • 1 Associated documents
We have approved this modification to the Grid Code.

  • Published: 12th Feb 2018
  • Decisions
  • 1 Associated documents
Decision on Grid Code modification.

  • Published: 16th Nov 2017
  • Decisions, Guidance
  • 2 Associated documents
Our decision to amend our guidance on technical derogation requests to incorporate derogation requests in relation to three European Network Codes.

  • Published: 22nd Sep 2017
  • Closed: 20th Oct 2017
  • Consultations and responses
  • 4 Associated documents
We are consulting on our technical connection derogation requests guidance, to incorporate guidance in relation to several new European Network Codes.

  • Published: 31st Aug 2017
  • Decisions
  • 1 Associated documents
This letter confirms Ofgem's decision that GC0103 should not be progressed on an urgent basis.

  • Published: 7th Mar 2017
  • Decisions
  • 1 Associated documents
Authority decision to modify the NETS SQSS and the Grid Code.

  • Published: 7th Feb 2017
  • Decisions
  • 1 Associated documents
We have approved this modification to the Grid Code.

  • Published: 28th Sep 2016
  • Decisions
  • 1 Associated documents
Decision to send back Grid Code modification proposal.

  • Published: 22nd Sep 2016
  • Decisions
  • 1 Associated documents
We have approved this modification to the Grid Code.

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