Connection and Use of System Code (CUSC)

The Connection and Use of System Code (CUSC) constitutes the contractual framework for connection to, and use of, the national electricity transmission system.

The methodologies used to derive the charges that National Grid Electricity Transmission levies for connection to and use of the national electricity transmission system are also set out in the CUSC.

If you wish to discuss whether you need to be a party to this code and how to become one, please contact National Grid Electricity Transmission plc.

Connection and Use of System Code Modifications

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

Publications and updates

  • Published: 20th Feb 2020
  • Decisions
  • 1 Associated documents
Decision re: Connection and Use of System Code (CUSC) Modification Panel Request for Urgency and Recommended Timetables, for CMP334, 335 & 336.

  • Published: 10th Feb 2020
  • Decisions
  • 1 Associated documents
Decision re: Connection and Use of System Code (CUSC) Modification Panel Request for Urgency and Recommended Timetables, for CMP327/317, CMP332, CMP333.

  • Published: 5th Feb 2020
  • Decisions
  • 1 Associated documents
Updating the CUSC section 4 “Balancing Services” to ensure Ofgem have the appropriate authority to approve Terms and Conditions (T&Cs), relevant to EBGL Article 18, held within the Standard Contract Terms (SCTs).

  • Published: 22nd Nov 2019
  • Decisions
  • 1 Associated documents
Our modification proposal CMP295 facilitates the accession of Virtual Lead Parties (Project TERRE) to the CUSC and entry into specific CUSC contracts as required.

  • Published: 11th Nov 2019
  • Decisions
  • 1 Associated documents
We have approved this modification to the Connection and Use of System Code (CUSC).

  • Published: 2nd Sep 2019
  • Decisions
  • 1 Associated documents
Letter to decide urgency on modification to the Connection and Use of System Code (CUSC).

  • Published: 22nd Aug 2019
  • Decisions
  • 1 Associated documents
Decision to approve modification to the Connection and Use of System Code (CUSC).

  • Published: 5th Jul 2019
  • Decisions
  • 1 Associated documents
We have approved this modification to the Connection and Use of System Code (CUSC).

  • Published: 11th Jun 2019
  • Decisions
  • 1 Associated documents
Authority decision to send back Connection and use of System Code (CUSC) modification.

  • Published: 11th Jun 2019
  • Decisions
  • 1 Associated documents
We have approved this modification to the Connection and Use of System Code (CUSC).

Pages