Help Files:

Unit Run Hours

About

The Unit Run Hours chart replicates the Unit Bid/Offer Prices chart but plotting levels of run hours for a given unit or filter group. For instance, the following chart shows the evolving levels of run hours at coal-fired power stations in the market over time:

Included Data

The run hours calculation used counts each half-hourly period in which generation exceeds zero and counts this as 0.5 hours of running. The generation measure used is the minimum of the Max Export Limit (the maximum level at which the BM Unit may be exporting to the GB Transmission System at the Grid Supply Point) and the balancing adjusted generation (levels of post-balancing generation after National Grid has adjusted generation within gate closure).

This gives a level of run hours that accounts for any outages or trips that prevent actually delivering as intended.

Data Service

The Unit Run Hours data can be extracted from the API to extract on a monthly basis the run hours for a given unit. The parameters used as follows:

Code Required/Optional Description
chart Required unitsrunhours
filter Optional The group to show data for, e.g. filter=fuel&fuel=coal. This defaults to no filter and is as in the browser URL when picking options in the chart normally.
bmunitid Optional The is the unit id and can be found in the Browser URL. For instance bmunitid=T_ABTH7.
format Required The type of format. The value could be xml or csv . (See 'formats' action)

Examples :

https://enbm.netareports.com/dataService?username=xxx&password=xxx&format=xml&action=data&chart=unitsrunhours&filter=fuel&fuel=all&bmunitid=T_ABTH7&accdecl=0