After a slight decrease from severe levels, the mercury is hovering around 40 degrees Celsius in most regions
She commissioned the plants at Natore, Narayanganj, Munshiganj and Narsinghdi from the Ganabhaban on Sunday afternoon.
The prime minister also launched the 400-KV Meghnaghat-Aminbazar transmission line and a sub-station at Lalbagh in Dhaka.
At the inauguration ceremony, she urged the people to be economic in their use of electricity.
Hasina said her government wanted development throughout Bangladesh, not in regions already developed.
She observed electricity was a precondition for development.
The prime minister said now electricity had reached around 70 percent of the country’s population and outage dropped substantially.