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
CMP301 CMP301: Clarification on the treatment of project costs associated with HVDC and subsea circuits Implemented
CMP300 CMP300: Cost reflective Response Energy Payment for Generators with low or negative marginal costs Implemented
CMP299 CMP299: Consequential changes to the CUSC to facilitate the 2018-2021 ESO Incentive Scheme Implemented
CMP297 CMP297: Aligning CUSC and BSC post-TERRE (Section 11) – consequential modification to introduce definition of Virtual Lead Party Implemented
CMP296 CMP296: Aligning the CUSC to the BSC post-P344 (Project TERRE) to exempt Virtual Lead Parties from BSUoS Implemented
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
CMP288&CMP289 CMP288&CMP289: Explicit charging arrangements for customer delays and backfeeds (CMP288) and consequential change (CMP289) Withdrawn

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.