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The network capacity map provides an indication of the networks capability to connect large-scale developments to major substations. The colour gradings are intended to guide the user to areas of the network where a connection is more likely to be achieved without significant reinforcement.
The map also displays National Grid Transmission's (NGT) Statement of Works responses applicable to each site which may further restrict connection availability. More information on the Statement of Works and responses from NGT can be found here on our Statement of Works webpage.
Main points to note regarding the map are:
The map does not replace a full formal application in determining network capacity.
Filters sites by capacity available according to which ‘Capacity Mode’ is selected. i.e. A 5MVA search when in
capacity mode ‘Both’ will return sites with 5MVA of both demand and generation capacity available. Sites
returned may still be affected by other constraints.
Grid – Grid Supply Point – The point on the network where WPD receive a 132kV infeed from National Grid
Bulk – Bulk Supply Point – Intermediate substation generally where 132kV is transformed down to 33kV
Primary – Intermediate substation generally where 33kV is transformed down to 11kV
High (Green) – 25% total site capacity still available
Medium (Amber) – 10% to 25% total site capacity still available
Low (Red) – Less than 10% total site capacity available
Capacity available for import at that site
Capacity available for export at that site
Availability at sites upstream from the substation selected. Any upstream constraints affect downstream so that
the status of these sites are pulled up to the lowest availability rating in the hierarchy
Remaining fault level capacity at the site
Indicates if there is a Statement of Works response associated with the site, further details can be found in
the ‘More Information’ section
Contains further details on the substation including equipment ratings and generation details
WESTERN POWER DISTRIBUTION
Western Power Distribution (East Midlands) plc. Registered in England and Wales No. 2366923. Western Power Distribution (West Midlands) plc. Registered in England and Wales No. 3600574
Western Power Distribution (South West) plc. Registered in England and Wales No. 2366894. Western Power Distribution (South Wales) plc. Registered in Wales No. 2366985
All are registered to Avonbank, Feeder Road, Bristol BS2 0TB