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What's an MPAN or MPRN?
Your MPAN (Metering Point Administration Number) is the reference given for your electricity supply. It's also known as a Supply Number or S Number. This information can be found on your UW bills under the Supply details section.
Your MPRN (Metering Point Reference Number) is the reference given to your gas supply and is also called a Meter point Number. This information can be found on your UW bills under the Supply details section.
These numbers are unique to your property and don't change even if you switch suppliers. Therefore if you asked to provide these they can be found on your previous supplier's bill too.