US grid operator PJM declares level one emergency amid scorching heat
PJM Interconnection, the biggest U.S. electric grid operator, issued a level one emergency alert for Thursday as people crank up air conditioners to stave off the heat wave.
The areas, parts of Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia, and the District of Columbia.
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