UKPN Primary Substations: Demand Headroom

Author: Greater London Authority (using UK Power Networks data) Creation date: March 2026 Date of source data harvest: March 2026 Temporal coverage: June to November 2025 (Long Term Development Statement (LTDS) published 28th November 2025) Spatial Resolution: Primary Substation Distribution Area Geometry: Polygon Source data URL: UKPN Open Data Portal - Primary Substation Distribution Areas Data terms of use: CC BY 4.0 Data attribution: UK Power Networks, Primary Substation Distribution Areas, UK Power Networks primary substation distribution areas — UK Power Networks, March 2026. Workflow Diagram: n/a Comments: Whilst every effort has been made to ensure the quality and accuracy of the data, the Greater London Authority is not responsible for any inaccuracies and/or mistakes in the information provided.