Massive Blackout Hits Buenos Aires Metro Area, Affecting 600,000 Users
A fault at an Edenor substation in San Martín triggered the outage; power was largely restored by late Saturday night.
KEY POINTS
- Blackout affected nearly 600,000 users across AMBA on Saturday night
- Peak impact: 519,472 Edenor and 78,125 Edesur customers without power
- Root cause: 220 kV breaker failure at Edenor's Malaver substation in San Martín
- Outage began ~19:45, peaked at 21:45, largely restored by 23:00
- Both distributors restored service progressively; Edenor investigating further
A major power outage struck the Buenos Aires metropolitan area on Saturday night, leaving nearly 600,000 customers without electricity across both the Edenor and Edesur concession zones. The blackout began around 19:45 and peaked at 21:45 with 519,472 Edenor users and 78,125 Edesur users affected, according to the ENRE regulator.
Edenor confirmed on Sunday that the root cause was a failure in a 220-kilovolt circuit breaker at its Malaver substation in the San Martín district. The failure originated in Edenor's network but cascaded into Edesur's southern zones, darkening neighborhoods including Palermo, Recoleta, Belgrano, Flores, and Caballito.
“The interruption produced yesterday was a consequence of a failure in a 220 Kilovolt breaker at the Malaver substation.”
Traffic lights failed and entire buildings went dark, with the outage captured live on television near the MALBA museum on Figueroa Alcorta Avenue. Both distributors began progressive restoration after 21:30, and service was almost fully normalized before midnight.
Edesur had stated from the outset that the fault was external to its system. Edenor continues to investigate the precise factors that led to the breaker failure.
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