Information regarding cookies and WWW.SEM-O.COM

By using this website, you consent to the use of cookies in accordance with the Single Electricity Market Operator’s Cookie Policy.
For more information on cookies and our Cookie Policy please follow this link.

I accept


Click for RSS Feed

 The Trading and Settlement Code Modifications Committee is the forum for considering change to the Trading and Settlement Code. The Modifications Committee meets every 2 months. Details of all scheduled meetings can be found on the Market Development calendar.

The 2017 calender of Modification events is available for download at this link

Mod ID Title Mod Status Stage Section Affected Effective Date
MOD_12_18 Mod_12_18 Modifcation to Part B Agreed Procedure 17 New Active    
MOD_11_18 Mod_11_18 Correction of Minor Material Drafting Errors New Active    
MOD_10_18 Mod_10_18 Amendment to Capacity Settlement Publication from Monthly to Daily New Active    
MOD_09_18 Mod_09_18 Interim Credit Treatment for Participants with Trading Site Supply Units New Active    
MOD_08_18 Mod_08_18 Clarification of rules used to determine the value of Price Average Reference Tag (TPAR) New Active    
MOD_07_18 Mod_07_18 Clarifications of use of variable “b” in NIV and PAR Tagging scenarios New Active    
MOD_06_18 Mod_06_18 - Clarification of Marginal Energy Action Price calculation including scenario when all actions are flagged New Active    
MOD_05_18 Mod_05_18 Clarification of Administered Scarcity Pricing function for scenarios not yet covered in rules New Active    
MOD_04_18 Mod_04_18 Reporting and Publication for Operational Schedules, Dispatch Instructions, Forecast Availability and SO Trades New Active    
MOD_03_18 Autoproducer Credit Cover New Active    
MOD_02_18 Meter Data Publication Timing New Active    
MOD_01_18 Notification of Suspension to SEM NEMOs New Active    
MOD_18_17 Net Inter Jurisdictional Flow Submission Deferred Active    
MOD_17_17 Recovery of Costs due to Invalid Ex-Ante Contracted Quantities in Imbalance Settlement Deferred Active T&SC Section 1  
MOD_16_17 Funding in relation to EirGrid/SONI payment obligations Deferred Active T&SC Section 1  
MOD_15_17 Credit Treatment for Adjusted Participants Recommended for Approval Active    
MOD_14_17 Part B Suspension When Suspended Under Part A Recommended for Approval Active    
MOD_13_17 Deferral of SEM NEMO Credit Reports and Non-acceptance of Contracted Quantities Deferred Active T&SC Section 1  
MOD_12_17 Outage Adjusted Wind and Solar Forecast Reports Recommended for Approval Active T&SC Section 1  
MOD_11_17 Deferral of Information Imbalance Charges Recommended for Approval Active    
MOD_10_17 Ex-Ante Quantities Deferral Recommended for Approval Active    
MOD_09_17 Solar in I-SEM Recommended for Approval Active    
MOD_08_17 Decremental Price Quantity Pair Submission Recommended for Approval Active    
MOD_07_17 Credit Assessment Volume for Generator Units Recommended for Approval Active T&SC Section 1  
MOD_06_17 Transitional Credit Cover Provisions Recommended for Approval Active T&SC Section 1  
MOD_05_17 Amendment to the Part B Form of Authority for the purpose of removing the Restricted Authority provision RA Decision: Approved (Not Vetoed) Active T&SC Section 1 24/10/2017
MOD_04_17 Solar in the SEM RA Decision: Approved (Not Vetoed) Active T&SC Section 1 24/10/2017
MOD_03_17 Treatment of Transmission Losses for Trading Sites with Contiguous Autoproducers in I-SEM RA Decision: Approved (Not Vetoed) Active T&SC Section 1  
MOD_02_17 Unsecured Bad Energy Debt & Unsecured Bad Capacity Debt Timelines. Recommended For Rejection Active T&SC Section 1  

SEMO is a joint venture between EirGrid PLC and SONI Limited