The main technical requirements to be met by users of the transmission system are outlined in the SONI Grid Code. This Code sets out the principles governing SONI's relationship with users and technical standards to be complied with by SONI and users. The Code specifies procedures for planning, connecting to and operating the transmission system during both normal and exceptional circumstances.
SONI is responsible for keeping the Grid Code up to date and, to do so, meets with users on a regular basis to discuss any necessary modifications to the Code. Any modifications to the Code must be approved by the Utility Regulator (UR).
Please note that this published version of the SONI Grid Code should be read in conjunction with the UR approved modifications post the Grid Code publication date of December 2018. They are detailed in the Grid Code Modification Section below.
The WFPS Settings Schedule and Power Park Module Setting Schedule set out certain technical criteria that Generators must comply with in respect of their Wind Farm Power Stations or Power Park Modules in accordance with CC.7.2 of the Grid Code. The WFPS Settings Schedule is deemed to form part of the Grid Code Connection Conditions. Power Park Module Setting Schedule is deemed to form part of the Grid Code and Distribution Code.
Integration of Batteries Implementation Note - June 2020
Battery ESPS Compliance Procedures
Wind Farm Power Station Settings Schedule
Power Park Module Setting Schedule
Simulation Studies and Modelling Requirements for Compliance Demonstration
Conventional Generator Compliance Testing
The Grid Code Constitution is available here.
The Grid Code Meetings and Working Groups are available here.
The Grid Code Documentation including Modifications and Consultations is available below.
DSU Approved Modifications
Regulatory Approval Letter for Grid Code Modification application is available here.
Regulatory Approval Document 16112016 Outturn Availability is available here
Regulatory Approval Letter 16112016 Outturn Availability is available here
Regulatory Approved Document Power Park Module 16112016 is available here
Regulatory Approval Letter 16112016 Power Park Module is available here
Regulatory Approved Document Dynamic Models 16112016 is available here
Regulatory Approval Letter 16112016 Dynamic Models is available here
Regulatory Approval Letter 17122015 (retirement of plant) is available here
Regulatory Approval Letter 05102015 is available here
Regulatory Approval Letter 29092015 is available here
Regulatory Approval Letter 30042015 is available here
DSU 2013 Modification is available here
DSU Application Form Data Modification is available here
DSU Notice Time Modification is available here
DSU Signal Requirements Modification is available here
Proposed modifications to the SONI Grid Code in respect of Demand Side Units published 10th May 2013 is available here
Regulatory Approval Letter 05102015 is available here
Failure to Synchronise Grid Code Modifications (Clean) is available here
Failure to Synchronise Grid Code Modifications (Redline) is available here
WFPS Grid Code Modifications (Clean) is available here
WFPS Grid Code Modifications (Redline) is available here
Intraday Trading Grid Code Modifications (Comparison Result) is available here
Intraday Trading Grid Code Modifications (Modified Document) is available here
RoCoF Grid Code Modification Report to NIAUR published 27 August 2013 is available here
RoCoF Grid Code Modifications (Clean) is available here
RoCoF Modifications Proposal - TSOs Opinion is available here
RoCoF Modification Consultation Paper is available here
UR RfG Grid Code Approval Letter October 2020 available here
SONI RfG Modification Proposals Consultation Paper May 2020 available here
PPM Setting Schedule Green Line Version RfG Mod Proposal May 2020 available here
PPM Setting Schedule Red Line Version RfG Mod Proposal May 2020 available here
Grid Code Green Line Version RfG Mod Proposal May 2020 available here
Grid Code Red Line Version RfG Mod Proposal May 2020 available here
PPM Setting Schedule Green Line Version RfG Mod Proposal July 2019 available here
PPM Setting Schedule Red Line Version - RfG Mod Proposal July 2019 available here
SONI Housekeeping and RfG Modification Proposals Consultation Paper July 2019 available here
SONI Grid Code Modification Proposal on Over-installed Units available here
SONI Consultation on Advanced Meter Reconcilation Consultation paper Appendix B is available here
SONI Consultation on Advanced Meter Reconcilation Consultation paper Appendix A is available here
SONI Consultation on Advanced Meter Reconcilation Consultation paper is available here
SONI Consultation on Advanced Meter Reconciliation Cover Letter is available here
SONI Consultation on Outturn Availability Grid Code Modification published 15 February 2016 is available here
SONI Grid Code Modification Proposal on Outturn Availability (clean) is available here
SONI Grid Code Modification Proposal on Outturn Availability (redline) is available here
Power Park Modules Grid Code Amendments Consultation Paper published 8 January 2016 is available here
Power Park Modules Grid Code Amendments Consultation Paper (Grid Code amendments - clean) published 8 January 2016 is available here
Power Park Modules Grid Code Amendments Consultation Paper (Grid Code amendments - redline) published 8 January 2016 is available here
SONI Consultation Information Letter on Notice of Intention to Disconnect due to Retirement of Plant is available here
SONI Consultation on Notice of Intention to Disconnect due to Retirement of Plant is available here
Dynamic Modelling Modification Consultation Introduction Report Final - published 2 December 2013 is available here
Draft Modelling SONI Grid Code Modification v4 redline - is available here
Demand Side Units - Grid Code Amendments Consultation Paper published 10 May 2013 is available here
Demand Side Units - Grid Code Amendments Consultation Paper published 1 November 2011 is available here
Demand Side Units - Grid Code Amendments Consultation Paper (Grid Code amendments - clean) published 1 November 2011 is available here
Demand Side Units - Grid Code Amendments Consultation Paper (Grid Code amendments - redline) published 1 November 2011 is available here
Process for the Calculation of Outturn Availability Consultation Document published 1 February 2013 is available here
Rate of Change of Frequency Modifications Grid Code Amendments Consultation Paper published 17 October 2012 is available here
Eirgrid response to the Consultation Paper on Treatment of Curtailment in Tie-break Situations (SEM-12-028) published 25 May 2012 is available here
Failure to Follow Synchronising Instruction Grid Code Amendments Consultation Paper published 23 May 2012 is available here
WFPS Ramp Rate Grid Code Amendments Consultation Paper published 8 November 2011 is available here
SONI Grid Code Modification Proposal on Maximum Continuous Rating Requirement is available here