Possibly testing their Stuxnet technology in South America first, before they hit the shores of the U.S. and Canada during the heat of the summer.

Blackout leaves tens of millions in the dark in Argentina and Uruguay
Authorities are still investigating the cause of the unprecedented power failure.
Jen Kirby | Vox
June 17, 2019

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An “unprecedented” blackout hit Argentina, Uruguay, and other parts of South America on Sunday, leaving tens of millions of people in the dark, disrupting transit, and shuttering businesses.

Power had largely been restored by Sunday night. The outage began at about 7 am local time, throwing nearly all of Argentina and huge swaths of Uruguay into darkness. There were also reports that parts of Paraguay, Brazil, and Chile witnessed outages. About 50 million people were affected, according to the Argentinian newspaper Clarín.

Edesur, an Argentinian energy company, said the power failure started between two power stations, in Yacyretá and Salto Grande. That set off safeguards at the power plants, which ultimately forced the shutdown that affected the entire grid.

But it’s still unclear what caused that transmission disruption. Argentina’s energy secretary, Gustavo Lopetegui, told the media that the investigation could take up to 15 days.