The Cabinet approved the draft of the Speedy Supply of Power and Energy (Special Provision) (Amendment) Act 2010 in a meeting presided over by Prime Minister Sheikh Hasina on Monday.
The law, passed in 2010, was extended for the last time by three years to 2021.
After the Awami League returned to power in 2009, the government began signing deals for renting power plants for up to 16 years. The law was passed to legalise the plants.
Although the government considers the plants as very useful in maintaining dynamism in the economy with increased power supply, subsidies to pay high cost of electricity from the plants have drawn criticism.
The power, energy and mineral resources ministry in a report to the parliamentary standing committee in March said the plants would be shut down by 2024.
Secretary Anwarul said Bangladesh had surplus power some days ago, but new analysis shows rising demand in industries, and it will continue to rise massively after the Padma Bridge is built.