All Sainsbury's Energy customers have now been switched over to British Gas as part of the grocer's decision to end its gas and electricity service.
Thousands of households previously registered with the supplier have moved over to the 'big six' provider, which supplied energy on behalf of Sainsbury's under a while label arrangement.
The company is no longer taking on a new customers - and for the time being, Sainsbury's Energy has ceased to trade.
If you were a Sainsbury's Energy customer, you should have received a letter or email form the supplier stating it's making changes.
This correspondence would have been sent out between 5 February and 7 April.
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The letter will have explained that your contract is moving over to British Gas but that your account number, tariff and payments will all remain the same.
Any outstanding debt or credit associated with your Sainsbury's Energy account will also be moved over to the new British Gas account.
If you have a smart meter, readings will continue to be taken automatically.
Sainsbury's has said it will soon announce a partnership with another energy provider, when 'Sainsbury's Energy' will be back up and running again.
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As a result of the changes, however, it means all customers previously signed up to the supplier will lose their access to triple Nectar points for every pound spent at Sainsbury's - as well as the 4,000 bonus points for new customers.
If you've now switched over to British Gas, you'll need to make sure you're on the best possible deal for your usage - and if not, switch to one that's more competitive.
If you're on a standard variable tariff, you can leave penalty-free at any time, while the same rules apply to anyone on a temporary contract.
However, if you're on a fixed deal, you'll need to make sure you're in the last 49 days of your tariff to switch to another provider. Alternatively, if you find a better deal, work out if you'd actually save money on the new tariff even after paying an exit fees.
You can read all about how to find a cheaper energy deal in our guide , here .
