Your previous supplier can take up to 6 weeks to issue their final bill.
Around your supply start date (up to 5 days either side is OK) we will ask for an opening meter reading. Don't worry, we'll remind you. We pass this reading on to your old supplier so they can close your account and issue a final bill. On the way over, your reading goes through third-party checks to ensure your old supplier agrees with it.
Sometimes, your old supplier might tell you we haven’t sent them. This is normally because the readings are still being checked (it can take up to 4 weeks), or your old supplier has yet to agree to them (often unknown to call centre staff). Since your old supplier is responsible for releasing your final bill, we can’t say for certain when you’ll get it, but from our experience, it usually happens in four to six weeks.