The U.S. heat wave is affecting 100 million Americans . You normally end up with residual heat buildup in the buildings , and therefore the air conditioners are working harder to maintain the same temperature because of that residual heat . A mid - Atlantic power study predicted a peak demand of under 149,000 megawatts . The demand has reached 150,000 MW .
The U.S. heat wave is affecting 100 million Americans . A mid - Atlantic power study predicted a peak demand of under 149,000 megawatts . The demand has reached 150,000 MW .