Bulb has been chosen to take on the customers of failed energy supplier, Gnergy.
Ofgem announced at the weekend it had selected Bulb to absorb 9,000 domestic customers and a small number of non-domestic customers held by the Hampshire-based company.
The regulator said Bulb was offering customers a competitive tariff. It said all outstanding credit balances, including money owed to both existing and former domestic customers of Gnergy, would also be honoured.
Bulb will absorb all of the costs of honouring customers’ credit balances and the migration of customers.
It was announced last Wednesday that Gnergy had become the first energy supplier of 2020 to cease trading.
The retailer was issued with a final order in October last year over its failure to pay more than £673,800 in renewables obligation (RO) payments.
Gnergy was listed by Ofgem in December as owing more than £680,000 in RO payments plus interest.
In January this year the regulator announced that it issued Gnergy with a notice of failure to comply with a final order.
Bulb currently provides power to more than 1.6 million customers in the UK.