Argentina and Uruguay were hit by a massive blackout on Sunday which affected more than 40m people in one of the region’s worst ever power outages.
By midday local time, power was gradually returning after Argentina’s interconnection system “collapsed” at 7.07am, according to the country’s energy secretariat.
Two high voltage power lines running south from the Yacyreta hydroelectric dam on Argentina’s border with Paraguay reportedly went down simultaneously and triggered the outage.
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