The small energy supplier is the 28th firm to fall casualty to the energy crisis in 2021 after wholesale energy prices surged to record highs.

Ofgem said it appointed EDF to take on supplying Zog Energy Ltd’s domestic customers after ‘a competitive process’ to get the best deal possible for customers.

Funds that current and former domestic customers of the suppliers have paid into their accounts will be protected, where they are in credit. Domestic customers will also be protected by the energy price cap with their new supplier and energy supplies will continue as normal.

Zog customers will be contacted over the coming days about the changes. If customers wish to switch supplier, they can shop around but are advised to wait until the transfer has been completed. Customers will not be charged exit fees if they decide to switch to another supplier.

Neil Lawrence, Ofgem’s director of retail, said: “I am pleased to announce we have appointed EDF for the customers of Zog Energy Ltd. We understand that this news may be unsettling for customers, however they do not need to worry. Their energy supply will continue as normal, and customer credit balances will be honoured.

“EDF will be in contact with customers over the coming days with further information. Once the transfer has been completed, customers can shop around for a better deal if they wish to.”

The last two weeks in November saw the UK’s seventh largest energy supplier Bulb go into special administration, and suppliers Orbit Energy and Entice Energy go bust.