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
CMP302 CMP302: Extend the small generator discount until an enduring solution acknowledging the discrepancy between England and Wales, and Scotland is implemented - Withdrawn Concluded
CAP128 CAP128 - Removal of Section 10 – Transitional Issues Concluded
CAP172 CAP172: Capacity Pricing Mechanism Concluded
CMP207 CMP207: Limit increases to TNUoS tariffs to 20% in any one year Concluded
CAP147 CAP147: Deemed Access Rights to the GB Transmission System for Renewable Generators Concluded
CAP186 CAP186: Code Governance Review: Send Back Process Concluded
CAP119 CAP119 - Clarification of, and correction to, the table of Users’ Credit Allowances Concluded
CAP094 CAP094 - Limited Duration Transmission Entry Capacity Concluded
CAP073 CAP073 - Fast Track Applications for Short Term TEC Concluded
CAP046 CAP046 - Mandatory Frequency Response (Calculation of Volumes) 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.