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Grid infrastructureUnited KingdomEIR-0471

Explosion at Overgate substation near Dundee shopping centre caused by component failure

Feb 2025Published 7 Sept 2026Responsible editor: Chief Editor

SignificantElectricalProvisional
Estimated damageEstimated by the register's adjusterHow? Know the real figure?
Figure hidden: shown to subscribersMedium confidence
supply cut for about •• daysShown in the record →Full estimate
From the recordRoot cause hiddenFailed part hidden
Where
Overgate substation near Dundee shopping centre
Operator
SSEN Distribution
What
Electrical substation exploded, scattering bricks and destroying a wall
Cause
Failure of component connecting high-voltage cables to transformer
Response
Scottish Fire and Rescue Service attended and cordon erected

Companies named in the reporting of this entry (being named is not a finding of fault): SSEN Distribution

What happened

An electrical substation exploded metres from the entrance to the Overgate shopping centre in Dundee at around 10.40am on Wednesday 26 February 2025. The explosion blew apart part of the substation, scattering bricks and destroying a wall. Emergency services, including the Scottish Fire and Rescue Service, attended and a cordon was erected. No damage was reported to the shopping mall itself, and shops continued trading as normal. Following an investigation, network operator SSEN Distribution concluded that the cause was the failure of a component connecting high-voltage cables to one of the three transformers at the site. The company stated it subsequently carried out rigorous studies and testing on similar components across its network and found no further issues.

Contributing factors

The explosion was caused by the failure of a component connecting high-voltage cables to one of the substation's three transformers, according to SSEN Distribution.

Lessons learned

  1. Failure of a high-voltage cable connection component can cause explosive damage at a substation, so operators should inspect and test identical connections on transformers.
  2. After a component failure at a substation, network operators should test similar components across the network to check for latent defects.

More lessons on electrical protection and isolation, from every incident on the register.

Not yet known

  • Model and age of the failed component
  • Duration of any supply interruption
  • Cost of repairs and cordon

This entry is updated when these are reported. Get an alert for the next one like it.

Source

news.stv.tv

Published 2026-09-07. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

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Chart to reuse with this story: Grid infrastructure incidents in the United Kingdom, by year, free with a credit (PNG).

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Substation and transformer fires: the counts, the latest entries and a free alert for the next one. Also: power line and cable failures.

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