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.
| ID | Name | Status | Last Updated Sort ascending | |
|---|---|---|---|---|
| CMP367 | CMP367 'Urgent housekeeping modification as a result of 1 April implementations' | Implemented | ||
| CMP366 | CMP366: Housekeeping Modification as a result of CMP346 and CMP324/CMP325 implementation | Implemented | ||
| CMP365 | CMP365 'Improvements to CUSC Governance Arrangements' | Implemented | ||
| CMP363 & CMP364 | CMP363 & CMP364: TNUoS Demand Residual charges for transmission connected sites with a mix of Final and non-Final Demand & Definition changes for CMP363 | Implemented | ||
| CMP361 & CMP362 | CMP361 & CMP362: 'BSUoS Reform: Introduction of an ex ante fixed BSUoS tariff & Consequential Definition Updates' | Implemented | ||
| CMP360 | CMP360 'Aligning Section 14 of the CUSC ‘Balancing Services Use of System Charging Methodology’ to the licence changes introduced by RIIO-2 in respect of the ‘System Operator Revenue Restriction’ | Implemented | ||
| CMP358 & CMP359 | CMP358 & CMP359 : Implementation of the Small Generation Discount into the CUSC & Definition changes for CMP358 | Withdrawn | ||
| CMP357 | CMP357 'To improve the accuracy of the TNUoS Locational Onshore Security Factor for the RIIO2 Period' | Implemented | ||
| CMP355 & CMP356 | CMP355 & CMP356 'Updating the Indexation methodology used in TNUoS and Transmission Connection Asset charges for RIIO2 (CMP355) & Definition changes for CMP355 (CMP356)' | Implemented | ||
| CMP354 | CMP354 'Capacity Allocation and Congestion Management Regulation (CACM) cost sharing consequential changes' | Implemented |
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.