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GlobalGrid2050 Public Evidence Library

Heathrow North Hyde Substation Fire

Transformer bushings, oil sampling, fire suppression, airport distribution, network reconfiguration and critical infrastructure resilience.

This page records public sources for technical study. It does not make findings beyond the source documents.

Study theme

The March 2025 North Hyde substation fire is a UK critical infrastructure resilience case study. It links transmission asset condition, transformer bushings, oil sampling, fire suppression availability, network reconfiguration, private airport electrical distribution, emergency response, public transport disruption and cross sector resilience.

NESO North Hyde Review Interim Report

https://www.neso.energy/document/360076/download

NESO North Hyde Review Final Report

https://www.neso.energy/document/363891/download

Ofgem Investigation and Critical Asset Audit

https://www.ofgem.gov.uk/

National Grid Response and Resilience Measures

https://www.nationalgrid.com/

Heathrow Kelly Review and Airport Resilience Planning

https://www.heathrow.com/