Texas improved power grid
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Officials across the eastern two-thirds of the U.S. have been sounding the alarm about the potential for freezing rain to wreak havoc on power systems.
Many Texans are having flashbacks to the deadly winter freeze that crippled the state's isolated power grid nearly five years ago.
It started like a typical North Texas “bundle up” forecast and turned into a statewide emergency that Texans will be measuring winters against for decades.
Nigeria's national grid collapses again, causing widespread blackouts as power generation plummets. Get the latest details on this recurring power outage.