Run Hours Heatmap

About

The Run Hours Heatmap plots the levels of run hours that are being achieved on a by unit level over a period of time. Each of the cells in this heatmap include a link that can be clicked on to go through to the BM Unit Operations chart.

By looking at run hours across a fuel type it is possible to see the typically levels of run hours seen across the fuel types and which units are operational over a span of time.

Once a time period has been set the chart will display data across that time span at the highest resolution possible in order to show all the data on the screen with only vertical scrolling. For instance one screen might show a week’s data at 6 hour resolution, but a wider screen might show the same data at 3 hour resolution.

It is possible to filter out any entries that contain no values by filtering for either all units or for only units with data in this period. In this instance this will remove any units that were not generating across the whole period.

Where the unit is unavailable throughout a whole period (or block) this has been denoted by a greyed cell to highlight where activity is not occurring because a unit is offline.

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.

Colours Guide

The following details the colours used in this chart:

Data Service

The Run Hour Heatmap data can be extracted from the API to extract the run hour frequency rates across all the listed units over time. The parameters used as follows: