Heathrow Blackout Report Explained by a Grid Engineer

Description

In this deep-dive, I unpack the official NESO final report, using my experience as a UK transmission engineer to explain:

🔥 What caused the fire (and how it was preventable)

🛑 Why it took over six hours to get firefighters access

⚙️ How transformer protection works—and what went wrong

📉 The 2018 bushing defect that was deferred again and again

🔌 Why Heathrow had no electrical redundancy

📚 What lessons the power sector, regulators, and critical infrastructure owners must learn

This is the most detailed technical breakdown available—if you're an engineer, policy nerd, or just love understanding what’s behind the headlines, you're in the right place.

Link to Report: https://www.neso.energy/document/363891/download

Support me on Patreon
https://www.patreon.com/TheElectricBrit

📍 Chapters included - feel free to skip to the sections that interest you.
Chapters:
0:00 Introduction
2:40 Site History and Details
6:14 Timeline 2018
7:30 Protection Basics
9:50 Timeline Incident
14:00 Authorisations
17:00 Safe Isolation
23:15 Re-Energisation
25:20 Fire Cause
26:15 Maintenance Deferred (Rec1)
28:40 Recommendation 2
30:00 Forensic Analysis
32:20 Fire Mitigation
35:30 Recommendation 3,4,5
37:37 Heathrow Response
38:55 Heathrow Restoration
40:23 Opinion
44:50 Recommendation 8
47:00 Summary