CUSC Modifications

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
CMP217 CMP217: Clarification of the CUSC ‘Interruption Payment’ and ‘Interruption Period’ definitions Concluded
CAP140 CAP140 - Change to BSC Party Obligation Concluded
CAP141 CAP141: Statement of Works Concluded
CAP142 CAP142: Temporary TEC Changes Concluded
CAP143 CAP143: Interim Transmission Entry Capacity ("ITEC") product Concluded
CAP144 CAP144: Emergency Instruction to emergency deenergise Concluded
CAP145 CAP145: Embedded Generator MW Register Concluded
CAP146 CAP146: Responsibilities and liabilities associated with Third Party Works and Modifications made by Modification Affected Users Concluded
CAP147 CAP147: Deemed Access Rights to the GB Transmission System for Renewable Generators Concluded
CAP152 CAP152: Application form Exhibit B 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.