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
CMP244 CMP244: Set final TNUoS tariffs at least 15 months ahead of each charging year and CMP256 Potential consequential changes to the CUSC as a result of CMP244 Concluded
CMP261 CMP261: Ensuring the TNUoS paid by Generators in GB in Charging Year 2015/16 is in compliance with the €2.5/MWh annual average limit set in EU Regulation 838/2010 Part B (3) Concluded
CMP278 CMP278: BSIS 2017 Housekeeping Concluded
CAP168 CAP168: Transmission Access – Under-use and reallocation of TEC Concluded
CMP303 CMP303: Improving local circuit charge cost-reflectivity Concluded
CAP127 CAP127 - Calculation and Securing of Value at Risk Concluded
CAP171 CAP171: Capacity Pricing Mechanism Concluded
CMP206 CMP206: Requirement for National Grid Electricity Transmission to provide and update year ahead TNUoS Concluded
CAP146 CAP146: Responsibilities and liabilities associated with Third Party Works and Modifications made by Modification Affected Users Concluded
CAP185 CAP185: Code Governance Review: Role of Code Administrator and Code Administration Code of Practice 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.