NDP SPM Grid Group Polygons

The geographic areas supplied by the primary substations and the grid supply points (GSPs) in SPD, and the primary substations, grid groups and GSPs in SPM.  

For additional information on column definitions, please click on the Dataset schema link below.

Disclaimer: The boundaries change periodically as our network evolves, e.g. if we add a new primary substation or interconnect primary substations.  These are the polygons that reflect the network at the time the DFES is published; other publications have their own sets of polygons where applicable.  

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Data Triage:

As part of our commitment to enhancing the transparency, and accessibility of the data we share, we publish the results of our Data Triage process.

Our Data Triage documentation includes our Risk Assessments; detailing any controls we have implemented to prevent exposure of sensitive information. Click here to access the Data Triage documentation for the Network Development Plan dataset.

To access our full suite of  Data Triage documentation, visit the SP Energy Networks Data & Information page.