Your National Meter Identifier (NMI) is a unique number that you'll need if you change your electricity retailer. It’s always listed on the back of your electricity bill.
What is the NMI used for?
Every connection to the national electricity network is given its own NMI (National Meter Identifier). The NMI is used to ensure the correct meter data is connected to your account. The NMI is also used to:
identify your supply address
identify the meters and meter types at your connected address
ensure that you are billed for the right amount of usage at your property.
Where do I find my NMI? You can find your NMI (11 digits) under ‘Your electricity supply details’ on page 2 of your electricity bill. See your last paper bill, the PDF in your last emailed bill, in My Account or get in touch if you don't have a bill yet. To obtain specific information about a NMI, please reach out to our web chat team here.
Does my NMI ever change? The NMI should always stay the same for your electricity network connection point unless the location of your electricity network connection point changes - e.g. When a building is demolished, and a new meter is installed.
Does my NMI stay the same when I move? The NMI is associated with an electricity network connection point, therefore when you move, you will have a new NMI at your new location.