Parks in the city of eight million people are now plunged into total darkness after 11 pm, while two-thirds of street lights are also switched off at the same hour.
In early May, Vietnam recorded its highest-ever temperature—44.1 degrees Celsius (111.38 degrees Fahrenheit)—breaking a previous record set in 2019.
Adding to the problems, a severe drought in northern Vietnam means water levels at hydropower dams are 30 to 40 percent lower than normal.