‘Related meters’ could mean you have 2 separate electricity meters or one meter with 2 supply points. A supply point is how suppliers provide and charge for electricity. A typical meter has just one.
You’ll need to know if you have related meters if you’re switching your energy supplier. Energy companies use a 13 digit supply point number to identify your property. If you have related meters, then you’ll have 2 or more supply point numbers.
Electricity supply point numbers are known as ‘meter point administration numbers’, or MPANs.
If you’re switching to a new supplier
If you have related meters, you’ll need to give your new supplier both of your MPANs when you ask to switch. You should be able to find your MPANs on the ‘Electricity use in detail’ page of your monthly statement. Read more about finding your meter supply point number.
Related meters were installed to encourage a move to electrical heating
In most properties, electricity goes from a meter to a fusebox, which then separates it into circuits for heating, lighting, and powering other things. With related meters, electricity will go from the heating supply point directly to a circuit with its own register. It was originally set up this way to save time and money during installation.
If you had an Economy 10 meter with your old supplier, then you probably have related meters. They can also be called dynamically teleswitched energy meters, exotic meters, Total Heat meters, Total Control meters, and Weathercall meters.