
The energy firm was chosen by Ofgem following a process “to get the best deal” for the 84,000 domestic and 6,000 non-domestic customers.
Service will continue as normal, and customers who paid into the failed energy firm’s account will have their money protected if they were in credit, the regulator confirmed.
Rebel Energy customers will be contacted in the next few days with more details about the change of supplier.
You are within your rights to switch and look for a better deal if you had a Rebel Energy deal, although Ofgem has recommended customers wait until the transfer has completed before committing to a new energy firm.
Should you do so, you will not be charged any exit fees for selecting a new supplier. If you have any questions about the price of your energy, they should be directed to British Gas as opposed to Rebel Energy.

Why Life Insurance Still Matters – Even During a Cost-of-Living Crisis
Sponsored by Post Office
Customers who owe any money to the defunct supplier will be contacted by British Gas or the former supplier’s administrators.
Rebel Energy went bust on 2 April, with wholesale energy costs and the impact of the cost-of-living crisis blamed for an “unexpected forecast” by the CEO Dan Bates. Also, the business was placed under a provisional order in March following a potential breach in rules about renewable energy obligations.
‘Customers do not need to worry’
Tim Jarvis, director general for markets at Ofgem, said: “Making sure consumers face as little disruption as possible when a supplier exits the market is our number one priority, so I am pleased to confirm we have appointed British Gas for customers of Rebel Energy.
“While I know customers may be concerned, they do not need to worry. All credit balances remain protected, and there will be no interruption to their energy supply while the switch is taking place.”
He added: “Rebel Energy customers will be placed onto a competitive tariff, though should consider what’s right for them once the transfer is complete. They will also face no exit fees if they choose to switch to another supplier.”