← Back to the list
Grid infrastructureArgentinaEIR-0181

Fire and transformer explosion at Tolosa power station blacks out La Plata

Aug 2026Published 7 Sept 2026Responsible editor: Chief Editor

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
Tolosa power station, La Plata, Buenos Aires province
Operator
Edelap
What
Fire and transformer explosion at 3 a.m. caused outage
Injuries
None reported
Cause
Not reported

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

A fire broke out around 3 a.m. at a power station in the Tolosa district of La Plata, Buenos Aires province, reportedly causing a transformer operated by distributor Edelap to explode. The blaze had two major fronts, one along Camino General Belgrano and another on Calle 527, and at least four fire crews were deployed to bring it under control. The resulting outage left large parts of La Plata and nearby areas, including Ringuelet, Ensenada, City Bell, Gorina and Gonnet, without power.

Traffic lights and public lighting were affected, including a 10 kilometre stretch of the Buenos Aires to La Plata highway that was left completely dark. Authorities ordered a preventive evacuation of residents near the facility while firefighting and damage assessment were underway. No injuries or fatalities were reported, though the fire caused significant property damage. Edelap worked to restore supply, prioritising hospitals and health care facilities.

The source reports that the fire caused a transformer to explode, but does not state the underlying cause of the fire itself.

  1. Transformer explosions at power stations can black out multiple districts, so operators should plan wide-area contingency switching.
  2. Fires at substations can spread along multiple fronts, requiring several crews to control.
  3. Loss of traffic lights and highway lighting during outages raises road risk, so authorities need speed advisories ready.

More lessons on spacing, layout and fire spread, from every incident on the register.

  • Underlying cause of the fire
  • Transformer model and age
  • Duration of the outage
  • Cost of the damage

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

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

See the register's stories first in Google: add it as a preferred source.

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

Grid infrastructure incidents in Argentina: 3 entries, with a free alert for the next one.

Substation and transformer fires: the counts, the latest entries and a free alert for the next one. Also: transformer explosions.

Browse the full register or submit an incident.