Shapefiles containing the geographical representation of the GSP and BSP approximate supply areas for SEPD & SHEPD. These areas are formed by aggregating the primary substation boundaries that are supplied by each BSP/GSP (also available on the portal).

Shapefiles containing the geographical representation of the Primary Substation Boundaries for SEPD & SHEPD. The primary substation areas are formed from Voronoi polygons based off the point locations of all the secondary substations fed by a given primary substation. This means that every point in a polygon is closest geographically to the assigned secondary substation. The secondary substation polygons are then dissolved with respect to the primary they are connected to form the primary supply areas.

Details of SSEN Substations, their type and identification and location coordinates for both SEPD and SHEPD licence areas. Derived from the Shapefile data and presented separately here for convenience.

THIS DATASET IS UNDER THE SHARED CLASSIFICATION YOU MUST BE APPROVED FOR USE PRIOR TO ACCESS. Please contact data@ssen.co.uk or complete our request data form to gain access. The Electric Office Web Portal for Independent Connections Providers (ICPs) to to view, query and print map based GIS Data, showing the location and associated data for circuits, cables and overhead lines across the Distribution Network at all voltage levels from EHV -> LV to assist in the planning of connections. Object information is drawn from EO to show selected asset details such as operating voltages. *These maps cannot be relied upon as they are indicative only and while we make every effort as to their accuracy, the position of any cables may have changed. In addition there may be private cables which are not shown on the plan. Before carrying out work of any kind within vicinity of any of the cables, you must carry out a search on Linesearch [https://lsbud.co.uk/](https://lsbud.co.uk/)*

The Long Term Development statements provide information for anyone connecting to our distribution system at extra high voltage (EHV) level (including HV busbar of primary substations). It is designed to help to identify and evaluate opportunities for entering into arrangements with us relating to use of system or connection. Our statements include the following: network data; the likely development of our distribution system; plans for modifying the distribution system; and identification of parts of the distribution system that are likely to reach capacity limit in the next years. A long term development statement is available for each of our distribution network areas in central southern England and northern Scotland. Each statement has two sections, a summary (Part 1) and a detailed section (Part 2) both of which are available for download below.

The Long Term Development statements provide information for anyone connecting to our distribution system at extra high voltage (EHV) level (including HV busbar of primary substations). It is designed to help to identify and evaluate opportunities for entering into arrangements with us relating to use of system or connection. Our statements include the following: network data; the likely development of our distribution system; plans for modifying the distribution system; and identification of parts of the distribution system that are likely to reach capacity limit in the next years. A long term development statement is available for each of our distribution network areas in central southern England and northern Scotland. Each statement has two sections, a summary (Part 1) and a detailed section (Part 2) both of which are available for download below.