Northern Powergrid

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The Long-Term Development Statement (LTDS) contains network information which can be used when assessing the feasibility of connections to the Northern Powergrid distribution network. 

The LTDS will assist existing and future users of the Northern Powergrid system to assess opportunities available for development projects that require new or additional connections. The LTDS is reviewed each year and is made available to stakeholders before the end of November. There is an interim update made to a number of the data tables included within the LTDS; this update is made available to stakeholders before the end of May. The LTDS is available free of charge. A separate LTDS is published for each licence area and these are compiled in accordance with Standard Condition 25 of the Electricity Distribution Licence.

The benefits that the LTDS brings to our customers and stakeholders are that it:

  • Improves the availability of information relating to the Northern Powergrid system;
  • Furnishes developers with sufficient information to carry out initial assessments of system capability;
  • Increases visibility of our current distribution system development proposals; and
  • Informs customers and stakeholders of the correct points of contact within Northern Powergrid for specific enquiries relating to the LTDS.

The LTDS provides:

  • A general summary of our network design policies and principles;
  • A geographic map detailing our 132kV and EHV systems;
  • Schematic diagrams detailing the connectivity and normal operating configurations of our distribution system;
  • Circuit data;
  • Transformer data;
  • Load information;
  • Fault level information;
  • Generation data;
  • An outline of authorised system development proposals;
  • The number of third-party enquiries for a connection in the past 12 months;
  • A look up table to enable Local Authorities to identify and assess the available capacity in their area; and
  • The location and feeding area of each of our primary substations.

The LTDS Summary (for both licence areas) can be accessed using the hyperlinks on this page for direct download. 

If you require access to the Northern Powergrid LTDS, please apply to us at, giving your name, company name and address, contact details and reason(s) why you are interested in the LTDS and we will send to you within 5 working days a link to a secure FTP site with a username and password which will be sufficient to enable you to download the files you require.

We shall keep your contact details on file for seven years and may engage with you regarding any interim updates to the LTDS or to occasionally seek your views on improvements. We will not pass your contact details to any third party unless required to do so by law. If you do not wish to be contacted by us after we have provided you with your requested copy of the LTDS, then simply email us at to let us know.