Long Term Development Statement (LTDS) Table 8 >95% Fault Data

Introduction
The Long Term Development Statements (LTDS) report on a 0-5 year period, describing a forecast of load on the network and envisioned network developments. The LTDS is published at the end of May and November each year.

Long Term Development Statement Table 8 indicates any Fault Level restrictions or mitigations in place at our Grid and Primary substations. Published 28 November 2025.

More information and full reports are available from the landing page below:
Long Term Development Statement and Network Development Plan Landing Page

Methodological Approach

Site Functional Locations (FLOCs) are used to associate the Substation to Key characteristics of active Grid and Primary sites — UK Power Networks 
ID field added to identify row number for reference purposes

Quality Control Statement
Quality Control Measures include:

Verification steps to match features only with confirmed functional locations.
Manual review and correction of data inconsistencies.
Use of additional verification steps to ensure accuracy in the methodology.

Assurance Statement
The Open Data Team and Network Insights Team worked together to ensure data accuracy and consistency.

Other
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Definitions of key terms related to this dataset can be found in the Open Data Portal Glossary: https://ukpowernetworks.opendatasoft.com/pages/glossary/To view this data please register and login.