HomeRulebook HomeBalancing and Settlement CodeBSCBSC Section T Settlement and Trading Charges
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CONTENTS

  • SECTION T: SETTLEMENT AND TRADING CHARGES
    • 1. GENERAL
      • 1.1 Introduction
      • 1.2 Obligation and entitlement of Parties
      • 1.3 Data requirements
      • 1.4 Data receipt and validation
      • 1.5 Market Index Definition Statement
      • 1.6 Provision of Market Index Data
      • 1.6A Loss of Load Probability Calculation Statement
      • 1.7 Single imbalance price
      • 1.8 De Minimis Acceptance Threshold
      • 1.9 Continuous Acceptance Duration Limit (CADL)
      • 1.10 Price Average Reference Volume
      • 1.11 Replacement Price Average Reference Volume
      • 1.12 Value of Lost Load
      • 1.13 Annex T-2
      • 1.14 Not Used1.15 Winter Contingency BM Units
      • 1.16 Supplier Compensation Reference Price
    • 2. ALLOCATION OF TRANSMISSION LOSSES
      • 2.1 Delivering and Offtaking Trading Units
      • 2.2 Transmission Loss Factors
      • 2.3 Determination of the Transmission Loss Multipliers
    • 3. SETTLEMENT OF BALANCING ACTIONS
      • 3.1 Conversion of Data Received from the NETSO
      • 3.2 Establishment of final physical notification (FPNij(t))
      • 3.3 Establishment of Bid-Offer Volume (qBOnij(t))
      • 3.4 Establishment of Acceptance Volume (qAkij(t))
      • 3.4A Establishment of Bid-Offer Upper Range (BOURnij(t)) and Bid-Offer Lower Range (BOLRnij(t)) in relation to FPN and Submitted Bid-Offer Pairs
      • 3.4B Creation of Bid-Offer Pairs
      • 3.5 Establishment of Bid-Offer Upper Range (BOURnij(t)) and Bid-Offer Lower Range (BOLRnij(t)) in relation to Unsubmitted Bid-Offer Pairs
      • 3.6 Determination of Accepted Bid-Offer Volume (qABOknij (t))
      • 3.7 Accepted Offer Volume (qAOknij (t)) and Accepted Bid Volume (qABknij (t))
      • 3.8 Determination of Period Accepted Offer Volume (QAOknij) and Period Accepted Bid Volume (QABknij)
      • 3.9 Determination of Period BM Unit Total Accepted Offer Volume (QAOnij) and Period BM Unit Total Accepted Bid Volume (QABnij)
      • 3.10 Determination of Period BM Unit Offer Cashflow (COnij) and Period BM Unit Bid Cashflow (CBnij)
      • 3.11 Determination of Period BM Unit Cashflow (CBMij)
      • 3.12 Determination of Total System BM Cashflow (TCBMj) and Daily Party BM Unit Cashflow (CBMp)
      • 3.12A Determination of Network Gas Supply Total Bid Payment
      • 3.13 Determination of Reserve Scarcity Price (RSVPj)
      • 3.14 Determination of STOR Action Price (STAPtj)
      • 3.15 Determination of System and Balancing Demand Control Volumes (QSDCcj and QBDCcj)
    • 4. SETTLEMENT CALCULATIONS
      • 4.1 Treatment of Interconnector BM Units
      • 4.2 Determination of BM Unit Metered Volume (QMij) for Supplier BM Units
      • 4.2A Determination of BM Unit Metered Volume (QMij) for Secondary BM Units
      • 4.3 Determination of Information Imbalance Volumes (QIIij) and Charges (CIIij)
      • 4.3A Determination of Market Price (MPj)
      • 4.3AA Determination of Deviation Volume (QDEij) for Trading Secondary BM Units
      • 4.3B Determination of Period Supplier BM Unit Delivered Volume (QBSDij) for Secondary BM Units
      • 4.3C Determination of Period Secondary BM Unit Supplier Compensation (QSVij)
      • 4.4 Determination of Energy Imbalance Prices (SBPj and SSPj)
      • 4.5 Determination of Credited Energy Volumes (QCEiaj) for each Energy Account
      • 4.6 Determination of Energy Imbalance (QAEIaj) for each Energy Account
      • 4.7 Determination of Energy Imbalance Cashflows (CAEIaj and TCEIj)
      • 4.8 Non-Delivery Rule and Calculations
      • 4.9 Determination of System Operator Cashflow (CSOj)
      • 4.10 Determination of Residual Cashflow Allocations
      • 4.11 Determination of Compensation Cashflow Allocations
    • 5. SETTLEMENT
      • 5.1 Responsibility of SAA
      • 5.2 Requirement to carry out Settlement Runs
      • 5.3 Submission of Settlement data
      • 5.4 Failure of SAA's systems, etc
    • 6. ADDITIONAL CALCULATIONS
      • 6.1 Determination of Trading Unit Export and Import Volumes (QTUErj and QTUIrj)
    • 7 Not used8 CALCULATION OF BM UNIT CHARGEABLE DEMAND FOR THE EMR SETTLEMENT SERVICES PROVIDER
  • Annex T-1: Final Ranked Set of System Actions
    • Part 1 – Derivation of Final Ranked Set of System Actions
      • 1. INTRODUCTION
      • 2. RANKED SETS
      • 3. CADL FLAGGING
      • 4. SO-FLAGGING
      • 5. EMERGENCY INSTRUCTIONS
      • 6. DE MINIMIS TAGGING
      • 7. ARBITRAGE TAGGING
      • 8. CLASSIFICATION
      • 9. NIV TAGGING
      • 10. REPLACEMENT PRICING OF SECOND-STAGE FLAGGED SYSTEM ACTIONS
      • 11. PAR TAGGING
    • Part 2 - Detailed Provisions
      • 12. CADL FLAGGING
      • 13. ARBITRAGE TAGGING
      • 14. NIV TAGGING
      • 15. REPLACEMENT PRICE
      • 16. PAR TAGGING
    • Part 3 – Terms for Reporting
      • 17. Table of terms
  • Annex T-2: Transmission Loss Factors
    • 1. Introduction
    • 1A. Transmission Loss Factors relating to the BSC Year commencing 1st April 2025
    • 2. LFM Specification
    • 3. Load Flow Model
    • 4. Zones, Nodes and Mapping
    • 5. Transmission Network Data and HVDC Boundary Data
    • 6. Distribution Network Data
    • 7. Sample Settlement Periods
    • 8. Determination of TLFs
    • 9. Determination of the Transmission Loss Factor Adjustment (TLFAS)
    • 10. Role and powers of the NETSO
  • AMENDMENT RECORD – SECTION T

BSC Section T: Settlement and Trading Charges V47.0

Effective From Date:29/10/2026
Status:FUTURE
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