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
CMP355 & CMP356 CMP355 & CMP356 'Updating the Indexation methodology used in TNUoS and Transmission Connection Asset charges for RIIO2 (CMP355) & Definition changes for CMP355 (CMP356)' Concluded
CMP377 CMP377: Clarification of Section 14 BSUoS Charging Methodology Concluded
CMP410 CMP410: Payment Timescales for Monthly Payments Concluded
CMP226 CMP226: CUSC Modification Fast Track Proposal Concluded
CMP248 CMP248: Enabling capital contributions for transmission connection assets during commercial operation Concluded
CMP264 CMP264: Embedded Generation Triad Avoidance Standstill Concluded
CMP281 CMP281: Removal of BSUoS Charges From Energy Taken From the National Grid System by Storage Facilities Concluded
CMP305 CMP305: Removal of the Enhanced Reactive Power Service (ERPS) Current
CAP130 CAP130 - CUSC Connection Application Form – Fixed and Variable Application Fees Concluded
CAP174 CAP174: Amendment to Exhibit B to require provision of location of proposed Offshore Connection Site 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.