When you're looking to switch energy suppliers, you may be wondering why some companies require a credit check. The answer is simple: they want to make sure you're a reliable customer who will pay your bills on time.

Most energy suppliers will do a credit check when you apply to switch. This is because, if you pay by direct debit, your bills are estimated. If the supplier under-assesses you, you could end up owing them money. Therefore, they want to know that you're financially responsible and able to pay your bills.

It's important to note that the credit check will only happen when you've applied to switch, not when you're simply comparing deals. This means that you can compare different energy plans without worrying about your credit score being affected.

If you don't pass the credit check, don't worry. Suppliers may ask you to pay a security deposit or suggest a prepayment meter in order to take on your supply. This is simply a precautionary measure to ensure that they will be paid for the energy you use. However, you always have the option to stop the switch if this happens.