You can raise a modification – or mod – when you want to propose a change to any part of the CUSC.

For more information, please contact [email protected]

Search for any current or concluded modifications by name or ID. You can sort mods by ID, name, status or date of update.

Views reference
Modification status
ID Name Status Last Updated Sort ascending
CAP143 CAP143: Interim Transmission Entry Capacity ("ITEC") product Concluded
CAP182 CAP182: Provision of Frequency Response from DC converters Concluded
CMP199 CMP199: Reactive Dispatch Network Restrictions Concluded
CAP098 CAP098 - Reassessment of Suppliers Value at Risk Concluded
CAP077 CAP077 - Revision to CUSC Amendment implementation dates, where an Authority decision is referred to Appeal or Judicial Review. Concluded
CAP050 CAP050 - Review Process for implemented Urgent Amendment Proposals Concluded
CAP019 CAP019 - Reactive Power default payment rate indexation Concluded
CMP314 CMP314: Updating the CUSC to align Power Available with the Grid Code definition for Power Park Modules Concluded
CMP332 CMP332: Transmission Demand Residual bandings and allocation (TCR) Concluded
CMP348 CMP348 'Housekeeping Modification to insert Exhibit Y into the CUSC following implementation of CMP323 and amend numbering in Section 6' Concluded

More about modifications

Modification Tracker

Our Tracker gives you the latest details on current code modifications including the purpose and the stakeholders it affects, as well as panel comments and where it is in the review process. It is published on the 7th (or next working day) of each month.

Modification Proposal Form

If you're thinking about raising a modification, please get in touch with us. Our experts can give you advice on your Proposal, explain how the modification process works and help to answer any questions you may have. When we receive your Proposal, we'll check it through and work together to make sure it's easy to understand.

Calendar

Once you've been in touch and are ready to write your Proposal paper, send it to us by the monthly modification submission date which you can find on our Calendar.