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 Sort ascending
CMP295 CMP295: Contractual Arrangements for Virtual Lead Parties (Project TERRE) Implemented
CMP294 CMP294: National Grid Legal Separation changes to CUSC Section 14 Implemented
CMP293 CMP293: National Grid Legal Separation changes to CUSC sections, Exhibits & Schedules (non charging) Implemented
CMP290 CMP290: Housekeeping change to CUSC Section 14 required as a result of the implementation of CMP264, CMP265, CMP268 and CMP282 Implemented
CMP285 CMP285: CUSC Governance Reform – Leveling the Playing Field Implemented
CMP284 CMP284: Improving TNUoS cost reflectivity (Reference Node) This modification has been withdrawn Withdrawn
CMP281 CMP281: Removal of BSUoS Charges From Energy Taken From the National Grid System by Storage Facilities Implemented
CMP274 CMP274: Winter TNUoS Time of Use Tariff TToUT for Demand TNUoS Withdrawn
CMP428 CMP428: User Commitment liabilities for Onshore Transmission (reinforcement) in the Holistic Network Design Implemented
CMP437 CMP437: Update CUSC arrangements to replace the Electricity Arbitration Association with the London Court of International Arbitration (LCIA) (Charging) 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.