Offgame said energy suppliers Enstroga, Igloo Energy and Symbio Energy have announced they are ceasing business.
Enstroga has 6,000 customers, Igloo Energy has 179,000 and Symbio Energy has about 48,000 customers.
This means that around 233,000 customers will be temporarily left without a supplier.
Energy industry regulator Offgame has insisted that customers will still continue to get gas and electricity as usual.
It said it would select the suppliers who would handle the accounts of the customers and the newly appointed companies would get in touch with the account holders.
Ofgem promised that any credit in customers’ accounts would be protected.
Domestic customers would also be protected by an energy price cap when switched to a new supplier.
Customers of the three firms are advised to wait until a new supplier is appointed and contacted before switching.
The three firms are the latest to collapse in recent weeks amid an unprecedented rise in global gas prices.
This comes after failures by People’s Energy, Green Suppliers Ltd., Utility Point, PFP Energy, MoneyPlus Energy and Avro Energy.
That means nine smaller energy suppliers that have been shut down since the beginning of this month.
Neil Lawrence, Offgame’s director of retail, said: “Offgame’s number one priority is to protect customers.
“We know this is a worrying time for many and the news of a supplier going out of business can be disturbing.
“Our safety net We will make sure your energy supply continues.
“If you have credit in your Enstroga, Igloo Energy or Symbio Energy account, the money you pay for is safe and you won’t lose the money you owe.”
Credit: www.independent.co.uk /