Long Term Development Statement (LTDS) Table 2a Transformer Data - 2W

The LTDS is published at the end of May and November each year. This is Table 2a from our current LTDS report (published 29th May 2026), showing the Transformer information for two winding (1x High Voltage, 1x Low Voltage) transformers associated with each Grid and Primary substation where applicable.

More information and full reports are available from the landing page below: Long Term Development Statement Landing Page Methodological Approach Site Functional Locations (FLOCs) are used to associate the Substation where the transformer is located 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.