A company called MPAS (Meter Point Administration Services) can provide you with your electricity Supply number based on your postcode and house number.
The MPAS phone number that you need to call is dependant upon which region you live in. This is because your electricity supply number is issued by your area's local electricity supplier, commonly known as the Host Regional Electricity Company (Host REC).
Simply identify the area that you live in on the map. Once you have your Host REC's name, look up their telephone number in the table below.
| Host REC | MPAS Tel.No. |
| Eastern | 0870 1963082 |
| Central Networks (East Midlands) | 0845 6030618 |
| London | 0845 6000102 |
| Manweb | 0845 2709101 |
| Central Networks (Midlands) | 0870 6070459 |
| Northern | 0845 6013268 |
| Norweb | 0870 7510093 |
| Scottish Hydro | 0870 9009690 |
| Scottish Power | 0845 2709101 |
| | 0845 6015467 |
| Southern | 0870 9050806 |
| Swalec | 0845 6015972 |
| SWEB (South Western) | 0845 6015972 |
| Yorkshire | 0845 3300889 |