BSC simple guides

Section Q deals with the submission of data items in respect of relevant BM Units in accordance with the Grid Code; the submission of Physical Notifications in accordance with the Grid Code, to enable Final Physical Notification Data to be submitted by the NETSO; arrangements for the submission by Lead Parties of Bid-Offer Pairs for relevant BM Units and for the acceptance of Bids and Offers by the NETSO; the submission by the NETSO of Acceptance Data for the purposes of Section T and Section V; the submission by National Grid of Balancing Services Adjustment Data; the submission by the NETSO to the Balancing Mechanism Reporting Agent (BMRA) of other operational data items for the purposes of Section V.

Section R details the rules for the determination of Metered Volumes for the purposes of Central Volume Allocation (CVA) in relation to relevant BM Units, Interconnectors, Grid Supply Points and GSP Groups. These are collectively referred to as Volume Allocation Units in Section R.

Annex S-1 defines Performance Levels or Serials required of Suppliers and their Supplier Agents, and the Menu of Supplier Charges that specifies charges to apply should each Supplier or its Supplier Agents deviate from these Performance Levels. The arrangements for the payment of such charges are also defined.

Annex S-2 sets out how the metered quantities for Metering Systems and for Supplier BM Units are determined by the Supplier Volume Allocation Agent (SVAA).

Section S and its associated Annexes set out the rules by which Supplier BM Unit Metered Volumes are determined from a combination of Half Hourly and Non Half Hourly Metering Systems. It describes the obligations on Suppliers to provide data and to ensure that Supplier Agents (i.e. certain Party Agents - principally Meter Operator Agents (MOAs), Half Hourly Data Collectors (HHDCs), Half Hourly Data Aggregators (HHDAs), Non Half Hourly Data Collectors (NHHDCs) and Non Half Hourly Data Aggregators (NHHDAs)) undertake the requirements defined for them.

Section T sets out how Trading Charges for each Trading Party and the NETSO are determined; the data required in order to calculate the Trading Charges; and the processes undertaken by the Settlement Administration Agent (SAA) in connection with the determination of the Trading Charges.

Section U of the BSC sets out general obligations of Parties and BSC Agents relating to data and information; and provisions relating to Settlement. References in Section U to Parties do not include ELEXON or ELEXON Clear.

Section V of the BSC sets out details of the Balancing Mechanism Reporting Service (BMRS) BMRS; and other reporting requirements from BSC Agents to Parties, the Authority and/or for public reporting.

Section W covers arrangements for the resolution of Trading Disputes under the BSC; arrangements for the establishment and operation of the Trading Disputes Committee (TDC); actions to be taken upon resolution of a Trading Dispute; and the effect of resolution of a Trading Dispute.

Section X and its Annexes contain definitions of the terms used in the BSC and an interpretation of some of the conventions used within the BSC. It comprises Section X, which provides an interpretation of the legal standards as well as other terms and language used in the BSC together with Annex X-1: General Glossary, and Annex X-2: Technical Glossary.

General Glossary of Terms

Annex X-2 contains a number of technical definitions and acronyms applying within the BSC.  The information is divided between those terms used only within Section S relating to Supplier Volume Allocation, and terms used throughout the remaining sections of the BSC.  This is required because, for convenience, some definitions and acronyms have a different meaning between Section S and other sections of the BSC.