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
CAP088 CAP088 - Application of late payments of Commercial Debts (Interest) Act 1998 Concluded
CAP056-CAP066 CAP056-CAP066 - Housekeeping Modifications Concluded
CAP025-CAP040 CAP025-CAP040 - Housekeeping Modifications Concluded
CAP008 CAP008 - Codification Errors Concluded
CMP324 & CMP325 CMP324 & CMP325: Generation Zones – changes for RIIO-T2' & 'Rezoning – CMP324 expansion Concluded
CMP343 and CMP340 CMP343 and CMP340: 'Transmission Demand Residual bandings and allocation for 1 April 2022 implementation (CMP343)' and 'Consequential changes for CMP343 (CMP340)' Concluded
CMP363 & CMP364 CMP363 & CMP364: TNUoS Demand Residual charges for transmission connected sites with a mix of Final and non-Final Demand & Definition changes for CMP363 Concluded
CMP382 CMP382: Amend the terminology used in CUSC Section 14 to align with the definitions of ‘Financial Year’ and ‘Business Day’ within CUSC Section 11 Concluded
CMP398 CMP398: GC0156 Cost Recovery mechanism for CUSC Parties Implemented
CMP415 CMP415: Amending the Fixed Price Period from 6 to 12 months Current

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.