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 | |
|---|---|---|---|---|
| CMP421 | CMP421: CUSC Section 14 – Housekeeping changes update | Concluded | ||
| CMP286 | CMP286 Improving TNUoS Predictability Through Increased Notice of the Target Revenue used in the TNUoS Tariff Setting Process. | Completed | ||
| CMP331 | CMP331: Option to replace generic Annual Load Factors (ALFs) with site specific ALFs | Completed | ||
| CMP430 | CMP430: Adjustments to TNUoS Charging from 2025 to support the Market Wide Half Hourly Settlement (MHHS) Programme | Current | ||
| CMP424 | CMP424: Amendments to Scaling Factors used for Year Round TNUoS Charges | Current | ||
| CMP292 | CMP292: Introducing a Section 8 cut-off date for changes to the Charging Methodologies | Implemented | ||
| CMP431 | CMP431:Adjustments to TNUoS Charging from 2025 to support the Market Half Hourly Settlement (MHHS) Programme (Non-Charging) | Withdrawn | ||
| CMP379 | CMP379: Determining TNUoS demand zones for transmission - connected demand at sites with multiple Distribution Network Operators (DNOs) | Implemented | ||
| CMP338 | CMP338: Impact of DNO Contributions on Actual Project Costs and Expansion Factors – New Definition of "Cost Adjustment" | Implemented | ||
| CMP337 | CMP337: Impact of DNO Contributions on Actual Project Costs and Expansion Factors | 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.