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.

Modification status
ID Name Status Last Updated Sort ascending
CAP149 CAP149: Transmission Entry Capacity with restricted access rights (TEC lite) Concluded
CAP162 CAP162: Transmission Access - Entry Overrun Concluded
CAP177 CAP177: Removal of CUSC Amendments Panel’s ability to raise Amendment Proposals. Concluded
CMP214 CMP214: Implementation of TNUoS charging parameter updates following a price control review Concluded
CAP157 CAP157 - Extension of Qualified Company Definition Concluded
CMP193 CMP193: Housekeeping modifications to Section 14 of the Connection and Use of System Code (CUSC) Concluded
CAP104 CAP104 - Amendment to System to Generator Inter-trip related terms concurrently defined in the Grid Code and the CUSC. Concluded
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

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.