The Help page for the BM Reports web site is divided into four sections, each of which may be accessed independently, as follows:
This section of the site gives an overview of the main reports which are to be found on the site. It is structured in the same order in which the reports are presented. Note that the Transparency data items are in colour text. The detailed Transparency data item descriptions are available on the ENTSO-e Transparency Platform.
Non-transparency data items are coloured links to the additional information given below .
Electricity Data Summary
REMIT
Transparency
Help
Transmission
Demand
Generation
Balancing

MARKET COMMUNICATION

MARKET COMMUNICATION

INFRASTRUCTURE

  • Expansion and Dismantling Projects(B0910) - 9.1

CONGESTION MANAGEMENT

  • Countertrading(B1320) - 13.1b
  • Costs of Congestion Management(B1330) - 13.1c

UNAVAILABILITY OF TRANSMISSION
INFRASTRUCTURE

  • Planned Unavailability in the Transmission Grid (B1010) - 10.1a
  • Changes in Actual Availability in the Transmission Grid (B1020) - 10.1b
  • Changes in Actual Availability of Off-Shore Grid Infrastructure (B1030) - 10.1c

RESERVE SCARCITY PRICING

DEMAND CONTROL

FORECASTS

ACTUAL DEMAND

UNAVAILABILITY OF CONSUMPTION
UNITS

  • Planned Unavailability of Consumption Units(B0710) - 7.1a
  • Changes In Actual Availability of Consumption Units(B0720) - 7.1b

GENERATION FORECASTS

ACTUAL GENERATION

UNAVAILABILITY OF GENERATION
AND PRODUCTION UNITS

  • Planned Unavailability Of Generation Units(B1510) - 15.1a
  • Changes In Actual Availability Of Generation Units(B1520) - 15.1b
  • Planned Unavailability Of Production Units(B1530) - 15.1c
  • Changes In Actual Availability Of Production Units(B1540) - 15.1d
  • Temperature Data

MARKET DATA

SYSTEM PRICES

CROSS BORDER BALANCING DATA

  • Volumes Of Exchanged Bids and Offers(B1810) - 17.1ja
  • Cross Border Balancing - Prices(B1820) - 17.1jb
  • Energy Activated(B1830) - 17.1jc

BALANCING MECHANISM DATA

  • NETBSAD
  • DISBSAD
  • NON BM Instructed Volumes
  • Amount Of Balancing Reserves Under Contract(B1720) - 17.1b
  • Prices Of Procured Balancing Reserves(B1730) - 17.1c
  • Accepted Aggregated Offers(B1740) - 17.1d
  • Activated Balancing Energy(B1750) - 17.1e
  • Prices Of Activated Balancing Energy(B1760) - 17.1f
  • Aggregated Imbalance Volumes(B1780) - 17.1h
  • Financial Expenses And Income For Balancing(B1790) - 17.1i
  • Rules of balancing(B1710) - 17.1a

BM UNIT DATA

Much of the data which is presented on the site is produced by the System Operator, and is passed to the BMRS for publication. The descriptions of the data given below are deliberately brief, and the majority of the data items involved are defined in the Glossary section of this page. The Glossary also contains references to the original documentation where the definitive descriptions of the items are given. Much of this definitive information can be found on a web site which the System Operator maintains for the purpose at www.nationalgridinfo.co.uk; particularly in the Balancing Services and Grid Code sections of that site.

Electricity Data Summary

The Electricity Data Summary page provides a summary view of many key pieces of Electricity Market data. The page is divided into distinct sections that can be reached by either scrolling down the page.

The page sections are as follows:

  • System Warnings: Provides a link to the main System Warnings page, describes the purpose and categorisation of System Warnings, and provides a link to the System Warnings email alert service.

  • Credit Default Notices: Credit Default Notices are generated by the ECVAA system when a trading party enters or clears a credit default level. There are 2 levels of credit default, level 1 and level 2. The level 1 and level 2 credit default levels are defined in Balancing and Settlement Code, Section M, 3.2 and 3.3. The credit default notice contains the credit default level and the date and period in which the trading party entered the credit default level. There is an optional text field which may give more details on the credit default notice. The page displays all current and recently cleared credit defaults. It is possible for a trading party to be in both level 1 and level 2 at the same time.

  • System Prices: Graphs the SBP and SSP values for yesterday and today.

  • Market Imbalance: Graphs the NIV values for yesterday and today.

  • System Demand: Graphs the TSDF and ITSDO values for yesterday, today and tomorrow.

  • Generation by Fuel Type (graph): Graphs a rolling 24 hours of FUELHH values broken down by fuel type. As this section is concerned with the breakdown by fuel type of total positive generation to meet all Transmission System Demand, any fuel type categories with negative values will be capped to zero in this section.

  • Generation by Fuel Type (current summary table): This is available when the user clicks on the ‘Current Summary’. Lists the latest FUELINST and FUELHH values broken down by fuel type. In addition, a rolling 24 hour MWh value derived from the appropriate FUELHH values is shown. As this section is concerned with the breakdown by fuel type of total positive generation to meet all Transmission System Demand, any fuel type categories with negative values will be capped to zero in this section. For each timeframe, the generation total is calculated and shown and the percentage of that total represented by each fuel type is calculated.

  • Rolling System Demands: Graphs the System Demand derived as the sum across all fuel types in the FUELINST data received over the last 60 minutes. Note that negative Interconnector flow values (exports from the GB Transmission System) are capped at zero.

  • Average Half Hourly Interconnector Flows: Graphs the Interconnector components of the FUELHH data for yesterday and today.

  • Rolling System Frequency: Graphs the last 60 minutes of FREQ data.

REMIT

  • REMIT

    • The Regulation on Wholesale Energy Markets Integrity and Transparency (REMIT) is an EU regulation that came into force in December 2011 and is aimed at preventing market abuse in the wholesale energy markets. The information required for REMIT is published on this page (P291).

Transparency

  • Transparency Data

    • This page lists the data items as required by the Transparency Regulation (P295). The page will only contain links to the data item. The actual data item page will be available in relevant category i.e. Transmission, Generation, Demand and Balancing. The detailed Transparency data item descriptions are available on the ENTSO-e Transparency Platform.

Transmission

  • System Warnings

    • System Warnings are messages published by the System Operator to inform all involved parties of important information concerning operational and commercial issues. For example, System Warnings are used to notify Inadequate System Margins, Demand Control Warnings, IT System Outages or Failures, Risk of System Disturbance and Manifest Error Claims. System Warnings are published at the System Operators discretion.

    The System Warnings facility is additionally utilised by the System Operator to provide notification of amended Acceptance Data relating to Emergency Instructions (Emergency Acceptance Data). Two notices will be issued in respect of each Emergency Instruction:

    1. As soon as possible after an Emergency Instruction has been issued to the relevant Party, the System Warnings facility will publish details of the affected BM Unit with the relevant Settlement Day(s) and Settlement Period(s); and
    2. Where possible by the SAA II Run for the relevant Settlement Day(s), the System Warnings facility will publish details of the affected BM Unit, the relevant Settlement Day(s) and Settlement Period(s), plus the Emergency Acceptance Data and a statement whether it will be treated as SO-flagged or not, and a rationale for that decision. The BOAL will not appear on the Physical Data page of the BMRA or be reflected in the BMRA System Price calculations.

    Note that System Warnings relating to System Operator to System Operator Trades are only displayed on the SO-SO Prices page.
    A subset of System Warnings filtered according to pre-determined rules to identify the most important System Warnings is also available on the Electricity Data Summary page.

  • System Messages

    • System Messages are generated internally by the BMRA. For example, when performing a settlement run, if no Market Index Data has been received from a Market Index Data Provider effective on that day, the BMRA will generate a system message.

  • SO-SO Trades

    • This page shows other SO-SO Price information from the System Operator, including data not currently provided through the SO-SO Trade Prices screens.

  • SO-SO Trade Prices
    • Today/Tomorrow shows today's prices for System Operator to System Operator (SO-SO) trades on those Interconnectors for which the System Operator has systems in place to provide this data in a structured format.
    • Historic shows data for previous days (where structured data is available i.e. only for the IFA, and only for Settlement Days following the implementation of CP1333).Data may be selected by Settlement Date and Start Time - note that these should be entered in local time (although the data displayed on the page is in GMT, as provided by the System Operator).
    • The data items shown on the Today/Tomorrow and Historic screens are as follows:
      • Trade Type is a code that identifies the type of SO-SO trade. Currently there are four:
        1. BALIT_NG for 1-hour BALIT products offered on the IFA by National Grid, and BALIT_RTE for 1-hour BALIT products offered on the IFA by RTE;
        2. EWIC_EG for 1-hour CBB products offered on the East-West Interconnector by EirGrid and EWIC_NG for 1-hour CBB products offered on the EWIC by National Grid;
        3. MOYLE_SN for 1-hour CBB products offered on the Moyle Interconnector by SONI and MOYLE_NG for 1-hour CBB products offered on the Moyle Interconnector by National Grid; and
        4. BritNed_TN for products offered on the BritNed Interconnector by TenneT TSO B.V. and BritNed_NG for products offered on the BritNed Interconnector by National Grid.
      • Start Time identifies the UTC start time of the 1 hour time block to which the price relates. (For the Trade Types these time blocks are always one hour long, although the BMRS does support other durations, should these be required in the future).
      • Trade Direction identifies how the energy flow is to be seen from the perspective of the Acquiring system Operator's area. Values are A01 (meaning 'OFFER') or A02 (meaning 'BID').
      • Contract Identifier is a unique identifier for the offered trade.
      • Trade Quantity identifies the volume (in MWh) offered.
      • Price identifies the associated price. For the all Trade Types this will always be in £/MWh.
    • Data will be published as and when received from the System Operator. Data will be sent shortly after gate closure for each hour of the day. The Today/Tomorrow screen will therefore show prices up to one hour ahead for different Trade Types.
  • STOR Availability Window

      • The STOR availability window as provided by National Grid are available on BMRS.

      1. Current The STOR availability window currently applicable is displayed.
      2. Historic Enter a date (if no data is available for the date requested an error will be returned) to view the STOR availability window covering that date.
  • Loss of Load Probability (LoLP) and De-rated Margin

    • The LoLP and Derated Margin as provided by National Grid will be received and published by BMRS. In accordance with approved P305,

    • Until 1st May 2018, one final LoLP by Static Method (for the hour ahead) will be received from National Grid and published.
    • Between 1st May 2018 to 31st Oct 2018 one final LoLP by static method (for the hour ahead) and the indicative LoLPs (for the rest of the settlement periods) by dynamic method will be received from National Grid and published.
    • From 1st Nov 2018, one final LoLP (for hour ahead) and indicative LoLPs (for the rest of the settlement periods) by dynamic method will be received from National Grid and published.
    • The forecast of the De-rated margin will be provided and published for the settlement periods as received from National Grid.

    The page has separate tabbed panes for:

    1. Today/Tomorrow The LoLP and DRM values for the current system date (today), tomorrow and day after are published on this page
    2. Historic Enter a settlement date (if no data is available for the date requested an error will be returned) to view the LoLP and DRM values for that date.
  • Demand Control Instructions

      • The demand control instructions is published on BMRS as:

      1. Today/Tomorrow The demand control instructions for today and tomorrow are published here.
      2. Historic Enter a settlement date (if no data is available for the date requested an error will be returned) to view demand control instruction values for that date.

Demand

  • Day and Day Ahead (Demand)

    • This page will have two different tabs for National and Zonal.

    1. National: This chart displays the National Demand Forecast (NDF), Transmission System Demand Forecast (TSDF), Indicated Demand (INDDEM) and Indicated Generation (INDGEN) data for the current and following days, in both chart and tabular form. Initial National and Initial Transmission System Demand Forecasts for the following day are normally received by 9a.m. and are published on the BMRS as soon as they are received (the data is produced by the System Operator for a period known as an Operational Day, which runs from 5 a.m. to 5 a.m., and is displayed accordingly). The MELNGC, IMBALNGC and TSDF elements of this information DO take into account Station Transformer Load, Pump Storage Demand and Interconnector flows, but the NDF excludes them. Note that the Initial Day and Day Ahead Transmission System Demand forecast (9 a.m.) assumes a value of zero for the Interconnector and Pumped Storage Demand components.
    2. Zonal: The Zonal Data page displays the Day & Day Ahead (Transmission System Demand) forecast information for each zone as selected by the user from the drop down list. An option to download this data for all zones is also available from this page.
  • 2 - 14 Day Ahead

    • This page displays the forecasts produced each Business Day by the System Operator of the National Demand (NDFD), Transmission System Demand (TSDFD), National Surplus (SPLD) and Generating Plant Demand Margin (OCNMFD2) for the predicted peak period in each of days 2 - 14 ahead. These forecasts are produced in accordance with Operating Code 2 of the Grid Code. The latest forecast available is always displayed. These forecasts assume zero value for Pump Storage Demand and Interconnector flow values. The Transmission System demand forecast includes Station Transformer Load (see note below). No zonal forecasts are provided at these timescales.

  • 2 - 52 Week Ahead

    • This page displays forecasts produced each Thursday by the System Operator of the National Demand (NDFW), Transmission System Demand (TSDFW), National Surplus (SPLW) and Generating Plant Demand Margin (OCNMFW2) for the predicted peak period in each of weeks 2 - 52 ahead (commencing 2 weeks after the current day). Week 1 on the chart refers to the first week of the year and a week begins on Monday and ends on Sunday. Therefore, a calendar year may have 53 weeks (the first calendar week to contain 4 or more days in the new year calendar year is defined as week 1). After week 52 (or 53), the chart wraps back to week 1. The latest forecast available is always displayed. These forecasts assume zero value for Pump Storage Demand and Interconnector flow values. The Transmission System demand forecast includes Station Transformer Load (see note below). No zonal forecasts are provided at these timescales.

  • Day and Day Ahead (Margin)

    • This page will have two different tabs for National and Zonal.

    1. National:  This page displays the Indicated Margin  Data and Indicated Imbalance  data for the current and following days, in both chart and tabular form. Like the Day and Day Ahead (Demand) forecast, the data displayed in this forecast is updated for an Operational Day at a time. The MELNGC and IMBALNGC elements of this information DO take into account Station Transformer Load, Pump Storage Demand and Interconnector flows.
    2. Zonal:  The Zonal Data page displays the Day & Day Ahead (Margin) forecast information for each zone as selected by the user from the drop down list. An option to download this data for all zones is also available from this page.

    N.B. The Station Transformer Load used in providing the Initial Day Ahead Market Information, Current Day and Day Ahead Information and longer term forecasts is calculated from the CDCA I012 CVA metering. This is currently an average value of 500MW in summer (BST) and 600MW in winter (GMT). These fixed values are kept under review (typically annually).

  • Rolling System Demands

    • The ‘Latest’  tab graphs the System Demand derived as the sum across all fuel types in the FUELINST data received over the last 60 minutes. Note that negative Interconnector flow values (exports from the GB Transmission System) are capped at zero. The ‘Historic’  tab will enable viewing of historic data for requested date range.

  • Rolling System Frequency

    • The ‘Latest’ tab graphs the last 60 minutes of FREQ data. The ‘Historic’  tab will enable viewing of historic data for requested date range.

  • Initial Demand Out-Turn

    • The Initial Demand Out-Turn menu contains two options:

    1. Yesterday/Today: Initial Demand Out-Turn page displays the Initial Demand Out-Turn (INDO) and the Initial Transmission System Demand Out-Turn (ITSDO) data received from the System Operator for the first period of the previous day to the most recently completed period of today. This display is updated following the end of each Settlement Period as the latest figure is received from the System Operator.
    2.  Historic: Enter a date (if no data is available for the date requested an error will be returned) to view the set of INDO and ITSDO data for the day in question.

    INDO is comparable to the NDF forecast and ITSDO is comparable to the TSDF forecast.

  • Peak Demands and Indicative Triad information

    • This page has 3 tabs as described below:

    1. Peak Demands - Lists the TSDF peak values for yesterday, today and tomorrow, and the peak ITSDO value for yesterday.
    2. Indicative Peak Demand Information (using Operational Metering Data) - Lists up to 3 peaks of ITSDO data(adjusted to exclude demand from Interconnectors) from either the current or previous TRIAD Season and up to 3 peaks of TSDFW data from the current or future TRIAD Season. The ITSDO peaks must have 10 clear days of separation between them and are sourced from historic dates in either the current Triad Season if the current date falls within a Triad Season or the previous Triad Season, if the current date falls outside a Triad Season. The TSDFW peaks will not be in consecutive weeks and are sourced from forthcoming dates in either the current Triad Season if the current date falls within a Triad Season or the next Triad Season, if the current date falls outside a Triad Season. Note that there may not always be sufficient temporal separation to provide 3 peaks.
    3. Indicative Triad Demand Information (using Settlement Metering Data) - Lists up to 3 peaks of Settlement data (adjusted to exclude demand from Interconnectors) from either the current or previous TRIAD Season. The peaks must have 10 clear days of separation between them and are sourced from historic dates in either the current Triad Season, if the current date falls within a Triad Season or the previous Triad Season, if the current date falls outside a Triad Season. Note that there may not always be sufficient temporal separation to provide 3 peaks. INDO is comparable to the NDF forecast and ITSDO is comparable to the TSDF forecast.

Generation

  • 2-14 Day Ahead Generation Forecast

    • This page contains download links to Total Output Usable data for the peak period in each of days 2-14 ahead (NOU2T14D).

  • 2-52 Week Ahead Generation Forecast

    • This page displays Output Usable values for 2-52 weeks ahead, with Output Usable by Fuel Type (FOU2T52W) displayed in chart form and Output Usable by Fuel Type and BM Unit (UOU2T52W) available for download. These forecasts include Interconnector Flow values.

    National Output Usable Data (Total) includes additional data from BELLA contracts as defined under Grid Code OC2 and Section 11 of National Grid CUSC. The BELLA units do not have an equivalent BM Unit under the Balancing and Settlement Code and therefore are not currently included in National Usable Data (by Fuel type & BM Unit).

    A full comprehensive list of BELLA contracts can be found in the embedded register from National Grid.

  • 2-156 Week Ahead Generation Forecast

    • This page makes Output Usable values for 2-156 weeks ahead (NOU2T3YW) available for download, along with Output Usable by Fuel Type (FOU2T3YW), Output Usable by Fuel Type and BM Unit (UOU2T3YW), National Surplus (OCNMF3Y) and National Margin (OCNMF3Y2). These forecasts include Interconnector Flow values.

    National Output Usable Data (Total), National Surplus and National Margin include additional data from BELLA contracts as defined under Grid Code OC2 and Section 11 of National Grid CUSC. The BELLA units do not have an equivalent BM Unit under the Balancing and Settlement Code and therefore are not currently included in National Usable Data (by Fuel type & BM Unit).

    A full comprehensive list of BELLA contracts can be found in the embedded register from National Grid.

  • Peak Wind Generation Forecast

    • Lists the peak WINDFOR value, the time of the peak and the total peak capacity of all visible windfarms (ie. those that have operational metering and are included in the latest forecast process). This section also allows details of the current set of Power Park Modules to be downloaded. Wind Forecast data is not available on any other BMRS webpage.

  • Wind Forecast Out-turn

    • Graphs the initial and latest WINDFOR values as bars and the Wind component of the FUELHH data for yesterday, today and tomorrow. Wind Forecast and Out-turn data is not available on any other BMRS webpage.

  • Daily Energy Transmitted

    • The ‘Latest’ page shows data and graph for a rolling 3 months of INDOD, INDODNORMAL, INDODHIGH and INDODLOW data. The ‘Historic’ tab will enable viewing of historic data for requested date range.

  • Generation by Fuel Type (Current/Historic)

    • This page also allows the current FUELHH data to be displayed in a table in a page from where a rolling 3 months of historic data may also be accessed.

  • Generation by Fuel Type (24H Instantaneous)

    • This page lists a rolling 24 hours of FUELINST data to be displayed in a table from where it may also be downloaded.

  • Average Half Hourly Interconnector Flows

    • The ‘Latest’ page graphs the Interconnector components of the FUELHH data for yesterday and today. The‘Historic’ tab will enable viewing of historic data for requested date range.

  • Temperature Data

    • The ‘Latest’ page graphs a rolling 3 months of TEMP, TEMPNORMAL, TEMPHIGH and TEMPLOW data. Temperature data is not available on any other BMRS webpage. The ‘Historic’ tab will enable viewing of historic data for requested date range.

    Effective temperature (TE) is a variable that is used in National Grid and the energy industry generally to estimate the variation of demand in relation to temperature change. Actual weather data is received by National Grid from National Grid's weather data provider for 6 weather stations around the UK (Heathrow Bristol, Birmingham, Leeds, Manchester and Glasgow). TE12 is the weighted average TE of these 6 weather stations at 12:00 hrs calculated using the formula below.

    TE measured in oC is the average of a moving average temperature T0 and the TE of 24 hours before.

    TEt = 0.5 (T0t + TEt-24)

    Where T0t at hour t is the average spot temperature of the 4 hours immediately before hour t =

Balancing

  • Market Depth -

    • This page will have two different tabs for Yesterday/Today and Historic.

    1. Yesterday/Today: This page displays the IMBALNGC, Offer Volume, Bid Volume, Accepted Offer Volume (AOV), Accepted Bid Volume (ABV), Unpriced Accepted Offer Volume (UAOV) and Unpriced Accepted Bid Volume (UABV) across the entire Balancing Mechanism. This page publishes data as it becomes available, from the first period of the previous day up to the current period of today. Note that at any given time the data for the current day will be incomplete, as the different data items displayed are received from the System Operator or calculated within the BMRS in differing timescales. For example, the IMBALNGC data for a given Settlement Period is received in advance of the Bid and Offer Volumes, which are not received until Gate Closure; and the remaining values cannot be calculated until after the end of the Settlement Period.
    2. Historic: Select a (historic) date to view the Market Depth Data for that day. The set of data which is displayed will show all of the items which were defined for the date in question.
  • Market Activity

    • This page will have two different tabs for Yesterday/Today and Historic.

    1. Yesterday/Today: This page displays the latest Bid/Offer Acceptances (BOAs) which have been recorded by the System Operator for all BM Units. For each BOA the BM Unit will be identified, together with the Acceptance ID allocated by the System Operator, the time at which the BOA was issued and the time at which delivery of the BOA must commence (the times are usually only a few minutes apart). The details are listed in reverse chronological order (i.e. most recent first) from top to bottom, and from the left column to the right column. When data reaches the bottom of the far right column, data will begin to overwrite previous data from the top of the left column. The 84 latest acceptances are displayed. These may stretch back over a number of periods.

      The information given on the Market Activity screen is intended to allow the individual BOAs to be cross-referenced to the individual BM Unit data (see below).

    2. Historic: Select a date and a Settlement Period number to view the list of BOAs issued for all BM Units for that period. Note that the wildcard for all settlement periods is not acceptable here (because of the large number of BOAs which would be returned) - a valid Settlement Period number must be selected.
  • Credit Default Notices Data

    • Credit Default Notices are generated by the ECVAA system when a trading party enters or clears a credit default level. There are 2 levels of credit default, level 1 and level 2. The level 1 and level 2 credit default levels are defined in Balancing and Settlement Code, Section M, 3.2 and 3.3.

    The credit default notice contains the credit default level and the date and period in which the trading party entered the credit default level. There is an optional text field which may give more details on the credit default notice. The page displays all current and recently cleared credit defaults. It is possible for a trading party to be in both level 1 and level 2 at the same time.

  • Currency Conversion

    • By [16:00] each calendar day, BMRA shall publish the Settlement Exchange Rate for the following Settlement Day on BMRS.

    The Settlement Exchange Rate is the average value of the latest GBP-EUR exchange rate from the agreed financial services provider(s) for use on the following Settlement Day.

  • RR Aggregation Information
    1. Total Volume of Offered Bids: Data grouped by Quarter Hour and Flow Direction (Up or Down) defined as total of Maximum Quantity of RR Bids submitted by GB parties for that RR Auction Period.
    2. Total of Activated Bids: Data grouped by Quarter Hour and Flow Direction (Up or Down) defined as total of Activated Quantity data submitted under BR9.3(a).
    3. Total of Unavailable Bids: Data grouped by Quarter Hour and Flow Direction (Up or Down) defined as total of RR Bids submitted by GB parties for that RR Auction Period with Status of A11 (Unavailable).
  • System Sell and System Buy Prices

    • This screen differs from many of the other reporting screens in that the data displayed is calculated within the BMRS - though based on the data received from the System Operator. For an explanation of the principles of the calculations, please go to the Market Principles pages.

    This page will have two different tabs for Yesterday/Today and Historic.

    1. Yesterday/Today: The System Prices page displays the indicative System Sell Prices and System Buy Prices from the first period of the previous day to the period of today for which the calculations have most recently been completed. . It also includes Balancing Services Adjustment Data, or BSAD, used in each calculation along with a number of other important derived values. The list of additional derived values varies between pre and post P217 Settlement dates. The page also displays links to underlying data that provide a drill down facility to display data that impacts the corresponding settlement period. It consists of the following items:
      • Disaggregated BSAD, or Balancing Services Adjustment Actions (for post-P217 Settlement dates);
      • A detailed description of the System Price calculation's Stack data (for post-P217 Settlement dates);
      • Physical, Bid-Offer, BSV, Derived, and Acceptance for all BM Units that impact the corresponding settlement period
    2. Historic: Select a date (if no data is available for the date requested an error will be returned) to view the set of indicative System Prices for the day in question. The format of the page differs for pre and post P217 Settlement dates.
  • Detailed System Prices

    • This screen differs from many of the other reporting screens in that the data displayed is calculated within the BMRS - though based on the data received from the System Operator. For an explanation of the principles of the calculations, please go to the Market Principles pages.

    Select a Settlement Date and Period (if no data is available only the structure of the tables on this page will be provided) to view a detailed breakdown of the indicative System Price calculation's Stack for the period in question. The Buy and Sell Stacks are displayed separately. Each Stack lists all accepted actions included in the System Price calculations, including the System Actions (Bid-Offer Acceptance Volumes and Balancing Service Adjustment Actions) showing the initial data along with details of how the indicative price calculation processing affects each item's volume and price. A summary block at the top of the page shows how the results of the Stack processing and the Market Index Data processing are combined to produce the final Indicative System Prices. The Detailed System Price data is only available for post P217 Settlement dates.

    This page also includes stack Items for RR Aggregated Unpriced System Buy Action volumes (RRAUSBj) and RR Aggregated Unpriced System Sell Action volumes (RRAUSSj) for the Settlement Period (at zero price), Volume of GB Need Met per quarter and TERRE Clearing Price per quarter.

  • Market Index Data

    • This page will have two different tabs for Yesterday/Today and Historic.

    1. Yesterday/Today: This page displays the latest Market Index Data received and published by the BMRA for settlement dates today and yesterday. If data is received after the relevant calculation has begun, then it will be rejected by the BMRS, and not published.

      Where Market index Data Volume passed to BMRS is found to be below the defined Individual Liquidity Threshold for the MIDP and is non-zero, then the BMRS will consider the Volume, and associated Price, to be zero for that Settlement Period, and publish it as such. Where no Market Index Data is received then no data will be published, and the BMRA will use a default value of zero, for the Volume and Price values, in the related calculation. System Messages will be published to indicate where an MIDP has failed to supply Market Index Data in time for a particular calculation.

    2. Historic: Select a date and period to view previous data.
  • NetBSAD

    • This page will have two different tabs for Latest and Historic.

    1. Latest: This page displays the latest NetBSAD data received by the BMRA. Note that NetBSAD values displayed in this web page may differ from those displayed in the System Prices web page. The NetBSAD values displayed in the System Prices web page are the actual values used in the calculation of those prices and may have been superseded by later values received by the BMRA. This page displays the latest NetBSAD data received by the BMRA.
    2. Historic: Select a date to view previous NetBSAD data. This page displays the latest Historic NetBSAD data received by the BMRA. Note that NetBSAD values displayed in this web page may differ from those displayed in the System Prices web page. The NetBSAD values displayed in the System Prices web page are the actual values used in the calculation of those prices and may have been superseded by later values received by the BMRA.
  • DisBSAD

    • For post P217 settlement dates, this page will enable viewing of disaggregated Balancing Services Adjustment Actions for selected settlement date and period.

  • NONBM Instructed Volumes

    • This page will have two different tabs for Yesterday/Today and Historic.

    1. Yesterday/Today: This page displays the NONBM STOR Instructed Volume data (NONBM) received from the System Operator for the first period of the previous day to the most recently completed period of today. This display is updated following the end of each Settlement Period as the latest figure is received from the System Operator.
    2. Historic: Select a date (if no data is available for the date requested an error will be returned) to view the set of NONBM data for the day in question.
  • System Zone / BM Unit Mapping

    • This page will have download links for the System Zone Map and the BM Unit Mapping Information.

  • Physical Data

    • This page displays the Physical BM data for a selected settlement date and a period for one or more BM Units. ‘More Filters’ with auto-suggest will enable refining the search for the BM Units by the Lead Party, BM Unit Type, BM Unit Id or the NGC BM Unit Name. The Near Real Time (NRT) i.e. latest data can also be viewed. For physical data NRT (latest data) is for current settlement period + 2, where current settlement period is the period for which gate closure has occurred.

    The Physical Data page will display the FPN, QPN, MIL, MEL and BOAL data for the selected BM Units as separate tabs. Since this page can allow more than one BM Units, no graph for physical data is displayed here.

    For post P344 Settlement dates Bid-Offer Acceptances (Bid-Offer Acceptance Level Flagged (BOALF)) include the new “RR Instruction Flag”, to indicate whether the file is an RR Instruction or a BM Acceptance, and “RR Schedule Flag”, to indicate whether the data is as the result of an RR Schedule calculation, alongside the existing flags.

  • Dynamic Data

    • This page displays the Dynamic BM data for a selected settlement date and a period for one or more BM Units. ‘More Filters’ with auto-suggest will enable refining the search for the BM Units by the Lead Party, BM Unit Type, BM Unit Id or the NGC BM Unit Name. The Near Real Time (NRT) i.e. latest data can also be viewed. For dynamic data NRT (latest data) is for current settlement period, where current settlement period is the period for which gate closure has occurred.

    The Dynamic Data page will display the RURE, RURI, RDRI, RDRE, MZT, MNZT, SEL, SIL, MDV, and MDP data for the selected BM Units as separate tabs.

  • Bid Offer Data

    • This page displays the Dynamic BM data for a selected settlement date and a period for one or more BM Units. ‘More Filters’ with auto-suggest will enable refining the search for the BM Units by the Lead Party, BM Unit Type, BM Unit Id or the NGC BM Unit Name. The Near Real Time (NRT) i.e. latest data can also be viewed. For bid offer data NRT (latest data) is for current settlement period+2, where current settlement period is the period for which gate closure has occurred.

    The Bid Offer Data page will display the bid-offer pair details (including Bid Price and Offer Price) for the selected BM Units.

  • RR Bid Data
    1. Divisible: An indication whether or not each element of the bid may be partially accepted or not.
    2. Linking Bid ID: "The unique identification used to identify associated bids with each other.".
    3. Multipart Bid ID: The unique identification associated with a hierarchy of linked tenders. The identification within the set of linked tenders signifies that all tenders within the set with an inferior offer price must be accepted. This identification is defined by the tenderer and must be unique.
    4. Flow direction: UP increase the energy (in GB) DOWN decrease the energy (out GB).
    5. Status: This can be A06=Available or A11=No longer available.
  • RR Auction Results
    1. RR Activation data::The central TERRE system will inform National Grid of Balancing Service Provider (BSP) bids that have been accepted through RR Activations and National Grid will provide this information to settlement.
    2. Interconnector schedule data::Details of each Interconnector and the associated TERRE scheduled flow per Quarter hour.
    3. GB need met data::All the physical actions taken on the GB system (by Interconnectors or GB BSPs), to meet a GB need for each Quarter hour through the TERRE auction.
  • Derived Data

    • The Derived Data page displays an estimate of the Bid and Offer volumes accepted for each Bid-Offer pair by the System Operator for a single BM Unit. The data is provided at both a per-acceptance and period total level. At acceptance level, an indication of the acceptance duration is given ('S' for short and 'L' for long). At period level the Settlement Period cash flow for the BM Unit is provided. The format of this page is different for pre and post P217 Settlement Dates.

    The Derived BM data can be for a selected settlement date and a period for one or more BM Units.

    ‘More Filters’ with auto-suggest will enable refining the search for the BM Units by the Lead Party, BM Unit Type, BM Unit Id or the NGC BM Unit Name. The Near Real Time (NRT) i.e. latest data can also be viewed. For derived data NRT (latest data) is for current settlement period, where current settlement period is the period for which gate closure has occurred.

    1. Indicative Period RR Accepted Bid and Offer Volumes: New “RR Flag” column added to identify Period RR Accepted Bid and Offer Volumes.
    2. Indicative Period BM Unit Acceptance Volumes: New “RR Flag” column added to identify Indicative Period RR Total Accepted Bid and Offer Volumes.
    3. Indicative Quarter Hour RR Cashflows: Value obtained by multiplying Quarter-Hour RR Activation Volume and Quarter-Hour RR Activation Volume.
    4. Indicative Period RR BM Unit Cashflows: Summation of Quarter-hour RR Cashflow across all quarter-hours falling within a given Settlement Period per BM Unit. Period RR BM Unit Cashflow is repeated for each BM Unit, Settlement Date, Settlement Period and Quarter Hour combination.
  • Balancing Services Volume (BSV) data

    • The BSV Data page displays the Applicable Balancing Services Volume Data calculated by the System Operator for the selected BM Unit. The volume is single valued for a BM Unit, settlement date and period. The Derived BM data can be for a selected settlement date and a period for one or more BM Units. ‘More Filters’ with auto-suggest will enable refining the search for the BM Units by the Lead Party, BM Unit Type, BM Unit Id or the NGC BM Unit Name.

  • Search By BM Unit

    • The ‘Search’ By BM Unit will enable searching of the Physical, Dynamic, Bid Offer, Derived or BSV data for one BM Unit for a settlement date for one or ALL settlement periods. The page results are in a consistent way as that for the direct access to the Physical, Dynamic, Bid Offer, Derived or BSV data pages. The only difference will be for Physical data page where a graph is also shown.

Help

This section is not a reports section but provides links to informative pages which include About BMRS, Site Map, Privacy Policy, Reference Documents, Contact Us, External Sites. Reference Documents is where ELEXON or the BSC Service Desk can upload any document for market participants to access.