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
CMP432 CMP432: Improve “Locational Onshore Security Factor” for TNUoS Wider Tariffs Current
CMP431 CMP431:Adjustments to TNUoS Charging from 2025 to support the Market Half Hourly Settlement (MHHS) Programme (Non-Charging) Current
CMP430 CMP430: Adjustments to TNUoS Charging from 2025 to support the Market Wide Half Hourly Settlement (MHHS) Programme Current
CMP429 CMP429: Typographical and formatting updates following the implementation of CMP376 (Inclusion of Queue Management process within the CUSC) Concluded
CMP428 CMP428: User Commitment liabilities for Onshore Transmission circuits in the Holistic Network Design Current
CMP427 CMP427: Update to the Transmission Connection Application Process for Onshore Applicants Implemented
CMP426 CMP426: TNUoS charges for transmission circuits identified for the HND as onshore transmission Current
CMP425 CMP425: Billing Demand Transmission Residual By Site Current
CMP424 CMP424: Amendments to Scaling Factors used for Year Round TNUoS Charges Current
CMP423 CMP423: Generation Weighted Reference Node 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.