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Bid/Offer Prices Chart

About

The Bid/Offer Prices chart shows the min, average and max bid and offer prices for a units over a period of time. This is most useful when looking over a period of a week, but the following chart is focused in on prices for CCGTs in South Wales over a single day:

This chart at its highest levels provides a summary of each of the filter groups, with the minimum and maximum reverting to the minimum and maximum average offer prices so as to not being too heavily weighted towards outliers.

From here the columns can be clicked on to drill through and then if a unit’s column is clicked on it can be used to show the activity of the unit over time in more detail or an additional filter can be applied (as in the example).

Included Data

The data on this chart is the Accepted (or Declared) Bid/Offer Price data, which represents the price in £/MWh of any actions taken (or available to be taken) by National Grid to reduce/increase generation via the Balancing Mechanism within gate-closure.

Data Service

The Bid Offer Prices data can be extracted from the API to get the minimum, average and maximum bid and offer prices by unit within a grouping over a period of time. The parameters used as follows:

Code Required/Optional Description
chart Required boprice
startdatetime Required The start date time in format YYYYMMDDHHMMSS.
enddatetime Required The end date time in format YYYYMMDDHHMMSS.
filter Optional The group of units that are of interest e.g. filter=fuel&fuel=coal. This defaults to filter=fuel&fuel=all and is as in the browser URL when picking options in the chart normally.
accdecl Optional Whether to go accepted (0) or declared (1) and is as in the browser URL when picking options in the chart normally. Defaults to accdecl=0 (Accepted)
format Required The type of format. The value could be xml or csv . (See 'formats' action)

Example :

https://enbm.netareports.com/dataService?username=xxx&password=xxx&format=xml&action=data&chart=boprice&startdatetime=20190520000000&enddatetime=20190527000000&filter=fuel&fuel=coal&accdecl=0

https://enbm.netareports.com/dataService?username=xxx&password=xxx&format=xml&action=data&chart=boprice&startdatetime=20190520000000&enddatetime=20190527000000&filter=fuel&fuel=coal&filter_double=location&location=5&accdecl=0