Power consumption soared to an all-time high of 45,528 megawatts at noon Tuesday as people turned on air-conditioners and other devices to beat the searing heat.
It was 6,000 MW higher than last week’s average, Nguyen Duc Ninh, director of the National Load Despatch Center, said at a conference Wednesday.
The north led with demand of 22,330 MW.
In Hanoi, consumption was 3 percent up on what was the fourth day of a heatwave.
The temperature rose to 39 degrees Celsius on Tuesday, according to the National Center for Hydrometeorological Forecasting.