STC Modifications

You can raise a modification – or mod – when you want to propose a change to any part of the STC. 

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 or filter according to status.

Modification status
ID Name Status Last Updated Sort ascending Link to modification
CM093 - Extending the principles of the User Commitment Methodology to Final Sums Methodology as a consequence of CUSC Modification – CMP417 CM093 - Extending the principles of the User Commitment Methodology to Final Sums Methodology as a consequence of CUSC Modification – CMP417 Current view
PM0157 PM0157: Standardisation of Power Flow Metering Polarity Current view
PM0156 PM0156: Consequential changes to STCP13-2 arising from CM093 Current view
CM097 CM097:Electromagnetic Transient (EMT) and Root Mean Square (RMS) Model Submission for Transmission Owners (TOs) Current view
CM0107: Update for Centralised Strategic Network Plan CM0107: Update for Centralised Strategic Network Plan Current view
CM0106 CM0106: Interface Substation Compliance Assessment Current view
PM0150 PM0150: Due Date for Monthly Payments to Transmission Owners (TOs) Implemented view
CM0104 CM0104: Due Date for Monthly Payments to Transmission Operators (TOs) Implemented view
PM0154 PM0154: STCP16-1 System Access Reform. Investment Planning Process - Data on Constraint Costs. Implemented view
PM0153 PM0153: System Access Reform. Emergency Return to Service (ERTS): Profiling Review. Current view

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.

STCP Modification Proposal Form

Download the STCP Proposal form, when we receive your Proposal, we'll check it through and work together to make sure it's easy to understand.

STC Modification Proposal Form

Download the STC Proposal form, 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.