About 19,000 customers lost power during Sunday's record heat, with about 13,000 of those outages caused by extreme heat ...
The heat wave threatens to overwhelm U.S. grids and may force some to change their plans on one of the busiest travel weeks of the year.
Triple-digit heat returns Wednesday, with heat index values up to 114 degrees as Texas power demand reaches record levels.
More than 623,000 homes and businesses were without power as of late Sunday due to extreme weather conditions across several areas of the United States, according to data from PowerOutage.us.
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