Energy bills for 22 million households might go up again in the next six months after regulator Ofgem handed itself new powers to make emergency changes to the price cap.
In a letter to suppliers, the watchdog said it would look after households by helping energy firms, a day after announcing a 50% increase in bills from April 1.
Officials said that changes to the price cap on bills, including the ability to change it more often than twice a year, will reduce risks for suppliers.
