SONI’s TSO licence requires us to publish a number of documents. You can find links to these below:

Utility Regulator Approval of SONI Statement of Charges for 2024/25

​​EirGrid and SONI Balancing Market Principles Statement V6.1

BMPS V6.1 - Cover Note

Condition 23B: Compliance and Assurance Officer’s Final Report for 2021

Condition 16: Grid Code

Condition 18: Transmission Interface Arrangements

Condition 20: Transmission System Security and Planning Standards

Condition 22A: Scheduling and Dispatch

• Consultation on terms of reference for scheduling and dispatch audit

Condition 22B: Balancing Market Principles Statement

Condition 24: System Operator Agreement

Condition 25: Requirement to Offer Terms

• Standard TUoS Agreement 
• Form of Standard Terms for Distribution Connected Generator TUoS
• Form of Standard Terms for Transmission Connected Generator TUoS Agreement
• Form of Standard Terms of Connection Agreement

Condition 29: Economic Purchasing of System Services

• Fuel Switching Agreement

Condition 30: Charging Statements

• Transmission Use of System
• SONI Transmission Use of System Charging Statement 2024/25
• Transmission Connection Charging Statement
• Ancillary Services and Other System Charges

Condition 33: Ten Year Transmission Forecast Statement

• Ten Year Transmission System Forecast Statement 2021-2030
• All-Island Ten Year Transmission Forecast Statement 2021-2030 Study Files

Condition 35: Generation Capacity Statement

Condition 39: Quarterly Imperfections Cost Reports (these can be found in the library).

Condition 40: Transmission Development Plan Northern Ireland