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BM Unit Operations

About

The BM Unit Operations chart shows in more detail the activity at a single unit or a fuel type for the last five hours and for two hours in the future. The chart can be filtered by “Fuel Type” and “Unit”. Note on this chart that pressing up or down on the keyboard will cycle through the units included.

Included Data

The data on this chart is as follows:

  • Capacity - The nameplate capacity of the unit - ie if at 100% availability.
  • Availability - Levels of real time availability as noted by Max Export Limit availability data (the maximum level at which the BM Unit may be exporting to the GB Transmission System at the Grid Supply Point), with units having an obligation to re-declare their Max Export Limit (MEL) whenever their availability reduces (for instance after a failed start). Where MEL is below expected metered volume a unit has an indicated imbalance.
  • Import Availability - The Max Import Limit (MIL) which is the levels of declared import capability at units such as batteries or pumped storage.
  • Stable Export Limit - The minimum stable export operating level for BM Unit, ie the point below which a unit cannot go without turning off.
  • Stable Import Limit - The minimum stable import operating level for BM Unit, ie the point above which an importing unit cannot go without stopping importing or beginning export.
  • Pre-Balancing Dispatch (FPN) - The levels of planned generation ahead of gate closure and typically matching the volumes sold in traded markets.
  • Expected Metered Dispatch - The levels of post-balancing generation after National Grid has adjusted generation within gate closure.
  • Total Accepted Offer Volume - The total accepted offer volume is the total volume by which a unit has had its levels of generation increased via the Balancing Mechanism.
  • Total Accepted Bid Volume - The total accepted bid volume is the total volume by which a unit has had its levels of generation decreased via the Balancing Mechanism.
  • Accepted Offer Price - The accepted offer price is the average price at which a unit has had its levels of generation increased via the Balancing Mechanism.
  • Accepted Bid Price - The accepted bid price is the average price at which a unit has had its levels of generation decreased via the Balancing Mechanism.

Imbalances may be noted when the availability drops below the levels of expected metered generation.

For interconnectors the Expected Metered Volume plot is the operationally metered data from the fuel mix for the given interconnector.

Data Service

The data for the BM Unit Operations chart can be extracted from the API. The parameters are as follows:


Code Required/Optional Description
chart Required bmops
update Optional If false will always return data, else will return no data message if no change since submitted time
gmtupdatetime Required if update=true If update=true must put in the time of the last update. Can use the top field timestamp="2018-06-20T08:46:51" to get the last check time and then this feature can be used to only get data when a change has occurred.
format Required The type of format. The value could be xml or csv. (See 'formats' action)
bmunitid Required The ID of the unit to get data for, e.g. T_ABTH7. This will be as on the URL when in chart view.

Example :

enprompt.netareports.com/dataService?username=xxx&password=yyy&format=xml&action=data&chart=bmops&update=false&fuel=all&bmunitid=T_ABTH7