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Historic GTMA Trades FY 21-22

Table Information

ID

Title Trade ID
Type String
Description ID of the GTMA trade
Comment N/A
Example ES00101011
Unit N/A

StartTime

Title Start Time (UTC)
Type Date and Time, UTC format
Description Start time of the trade in UTC format
Comment N/A
Example 2020-01-05T00:00:00
Unit UTC ISO 8601

EndTime

Title End Time (UTC)
Type Date and Time, UTC format
Description End time of the trade in UTC format
Comment N/A
Example 2020-01-06T00:00:00
Unit UTC ISO 8601

Volume

Title Average Volume
Type Float
Description Average Volume of the trade
Comment A positve number represents the action increase generation /decrease demand or provide upwards margin; a negative number represents the action reducing genreation / increase demand or provide downwards margin. Value is rounded to up to 1 decimal place
Example 10.9
Unit MW

Price

Title Price
Type Float
Description Average price of the trade
Comment The value is rounded to up to 2 decimal places
Example 200.01
Unit £/MWh

Cost

Title Cost
Type Float
Description Total cost to Nationalgrid ESO for the trade
Comment Cost = Volume * Price * Duration. The value is rounded to up to 2 decimal places
Example 38.57
Unit £/h

SO_Flag

Title System Flag
Type String
Description System flag indicating whether the action is mainly for system security purpose
Comment SO_Flag = T (True) means the action is mainly for system security reason, SO_Flag = F (False) means the action is mainly for balancing reason
Example T,F
Unit N/A

Reason

Title Trade Reason
Type String
Description Detailed reason for the trade
Comment This can be for voltage, thermal constraints, ROCOF, upwards margin or downwards reserve etc
Example Voltage: V_Mersey, V_SouthEast (Votlage) Thermal: LE1, B6; ROCOF_BMU, ROCOF_IC, Margin, Downwards, Others
Unit N/A

Note

Title Note
Type String
Description Notes or comments
Comment N/A
Example N/A
Unit N/A

Last_Updated

Title Last Updated
Type Date and Time, UTC format
Description Date and Time that the information has been last updated
Comment N/A
Example 2020-01-05T00:00:00
Unit UTC ISO 8601