Substation fire in Cologne's Mühlheim district cuts power to about 25,000 households
Mar 2023Published 29 Oct 2026Responsible editor: Chief Editor
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What happened
On the evening of Thursday 2 March 2023, equipment at a substation in the Mühlheim district of Cologne caught fire, according to the fire service. About 30 emergency personnel attended the site with great caution. The substation was taken off the power supply for the firefighting work. The fire was a smouldering fire (Schmorbrand) which damaged the equipment. According to the fire service, about 25,000 households lost electricity for around four hours, and power was back on after that time. The operator, the cause of the fire and the full extent of the equipment damage were not reported in the source.
Contributing factors
Not reported. The source describes a smouldering fire in the substation equipment but does not give a cause.
Lessons learned
- Substation fires can disconnect tens of thousands of customers, so operators should have tested plans to isolate, reroute and restore supply quickly.
- Firefighting at a live substation depends on isolating the equipment first, so operators should agree de-energisation procedures with local fire services in advance.
- Early thermal faults in switchgear and transformers can be caught by temperature monitoring and inspection, which limits damage and outage duration.
More lessons on electrical protection and isolation, worker safety and safe systems of work, detection and monitoring, from every incident on the register.
Source
Published 2026-10-29. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.
