Zog Energy supplied around 11,700 domestic customers.

For existing customers, energy supplies will continue as normal after they were switched over to EDF on December 4.

Neil Lawrence, director of retail at Ofgem, 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.”