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Output Usable Data
Please note that BM Unit registration data will move to the
ELEXON Portal on 1st September 2010. Information and guidance about BM Units
will remain on ELEXON.co.uk. Please contact
communications@elexon.co.uk if you have any questions.
All links to external sites open in a new window.
On this page you can download files that contain Output Usable data by System Zone
and on a National basis.
Each Production BM Unit has a Registered Capacity, showing the maximum it can generate.
However, there are times when a Unit goes on a planned outage where some or all
of this capacity is unavailable. “Output Usable” is the portion of the Unit’s capacity
that is expected to be available. Formal definitions of these terms can be found
in the
Glossary and Definitions section of the Grid Code.
To view Output Usable data please select a file type and whether you wish to view
the information on a National or System Zone basis by using the drop down menu below.
The following types of Output Usable information are available. In each case, the
file date is the first date for which the data is effective for, and separate files
are produced for National and System Zone data.
- 2-14 Days ahead: The daily peak half hour MW value of
Output Usable for each day from the second to the 14th day following the current
Operational Day. The six previous files will be available to download.
- 2-49 Days ahead: The daily peak half hour MW value of
Output Usable for each day from the second to the 49th day following the current
Operational Day. This information is produced on an ad-hoc basis.
- 2-52 Weeks ahead: The weekly peak half hour MW value for
the peak Settlement Period for each week from the second to the 52nd week following
the current week. The three previous files will be available to download.
- 1-5 Years ahead: The weekly peak half hour MW value of
Output Usable for each week, in separate files for the first, second, third, fourth
and fifth year ahead. The latest file for each year will be available to download.
You can request any historical Output Usble data since 2 April 2002 that is not
displayed here by contacting the BSC Service Desk on 0870 010 6950 or by emailing
bscservicedesk@logica.com. You should
also contact the BSC Service Desk if you have any difficulty in viewing the displayed
data.
System Zone Maps
The current and historic System Zone Maps are published in the table below. When
using these maps with the Output Usable data, please check the map’s effective date
matches the publication date of the data. You can also view a list of which OC2
zone(s) each BM Unit currently lies in.
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Please note: The eight OC2 zones (A-G and S) are typical
system constraint boundaries, but do not geographically cover the whole GB transmission
system. There are gaps not covered by any of these eight zones, so it is not possible
to add up the eight zones and produce the national GB figure.
BMRS Zone Map
We’ve also mapped all BM Units to the zones available on the BMRS. This data can
be found at www.bmreports.com
in the Zonal Data menu.
Notify me when a document is added/updated to this table