The Debt-Fossil Fuel Trap report was published by the anti-debt campaigners Debt Justice and partners in affected countries.
Poor countries with heavy debts have been forced to continue to rely on fossil fuels for generating revenue to return the loans taken from richer countries and private lenders.
Their external debt payments have gone up by 150% between 2011 and 2023.
It was reaching their highest levels in 25 years.
Moreover, 54 countries are in a debt crisis.
They had to cut their public sending budgets during the pandemic to repay the loans.