This dataset shows our secondary sites and a number of attributes including oil natural air natural (ONAN) ratings, spatial coordinates, customer counts, whether a site is indoor/outdoor, the address, substation name, alias and its primary feeder.

A shapefile containing the postcode areas supplied by primary substations. Definitions of key terms related to this dataset can be found in the Open Data Portal Glossary: https://ukpowernetworks.opendatasoft.com/pages/glossary/

This list provides details of current plans (as stated in the Development Proposals of the last LTDS publication) for the development of UK Power Networks' three licence areas over the next five years. The LTDS is updated twice a year: end of May; and end of November. The plans are subject to change in both their content and timing. All the schemes listed provide an increase in network capacity. Projects which have only an asset replacement element are excluded. More information and full reports are available from the landing page below: Long Term Development Statement and Network Development Plan Landing Page Definitions of key terms related to this dataset can be found in the Open Data Portal Glossary: https://ukpowernetworks.opendatasoft.com/pages/glossary/

A shapefile containing the postcode areas supplied by secondary substations. The dataset is generalised using our GIS customer connectivity model. Each Secondary Substation's connected LV Network is traced out to its electrical extents, including all connected customers. Using the geographic position of customer connections and key network points of both the Substation being traced and surrounding Substation's network, a Voronoi diagram is created. Each Voronoi polygon that intersects with the traced network is joined together to produce a single polygon, depicting the Supply Zone. This dataset is redacted in that any secondary sites with less than five customers will not be included to protect privacy.