An MPAN (Meter Point Administration Number) is the unique ID for your electricity supply point in Great Britain. It is also called a supply number or S number. Every home or business connected to the grid has one.
Your MPAN is not your account number with your energy supplier. It identifies the physical meter point on the network, so the DNO, supplier, and metering systems all refer to the same connection.
Where to find your MPAN
Look on a recent electricity bill or your supplier’s online account. It is often labelled MPAN, supply number, or S number.
The full number is usually 21 digits, sometimes shown in groups. The core MPAN is the last 13 digits. That core number is what installers and DNO forms most often ask for.
What the digits mean (briefly)
The MPAN encodes which distribution network serves your property and which meter point you are. The first two digits of the core number are the distribution identifier, which links to your local DNO (Distribution Network Operator).
You do not need to decode the MPAN yourself. Installers and your supplier use it when registering export meters, switching supplier, or notifying the DNO about solar or battery connection.
MPAN and solar or battery export
When you add solar panels or a battery that can export to the grid, paperwork often asks for your MPAN. That ties your generation or export meter to the correct supply point.
Export payments (SEG), G98 or G99 notification, and commissioning checks all use the MPAN so the DNO knows which connection on their network is involved.
Check My Solar does not store or display your MPAN. It reads live and historical data from Fox Cloud for Fox ESS systems. Your MPAN still matters for installation and export setup with your installer and DNO.
FAQ
Is MPAN the same as MPRN?
No. MPAN is for electricity. MPRN (Meter Point Reference Number) is for gas. They are separate identifiers.
Do I need my MPAN to use Check My Solar?
No. Linking your Fox ESS inverter via Fox Cloud does not require your MPAN. You may need it for export registration or DNO paperwork with your installer.
Can two homes share one MPAN?
No. Each distinct electricity supply point has its own MPAN. A flat with its own meter has its own MPAN.