South West Interconnected System
Synergy supplies electricity to residential customers in the Perth metropolitan area, regional towns and country areas in the South West Interconnected System (SWIS), which extends from Kalbarri to Albany and as far east as Kalgoorlie. For more information download the Energy Resources and Infrastructure Map.
Suppliers of Electricity in Western Australia
North West Interconnected System
Horizon Power is the regional business responsible for the generation, transport and sale of electricity in areas outside of the SWIS.
Regional and Remote Electricity Systems
| Horizon Power - Regional Non-Interconnected Systems |
| Broome |
Gascoyne Junction |
Menzies |
| Camballin |
Halls Creek |
Mount Magnet |
| Carnarvon |
Hopetoun |
Norseman |
| Cue |
Kununurra |
Nullagine |
| Denham |
Lake Argyle Village |
Sandstone |
| Derby |
Laverton |
Wiluna |
| Esperance |
Leonora |
Wittenoom |
| Exmouth |
Marble Bar |
Wyndham |
| Fitzroy Crossing |
Meekatharra |
Yalgoo |
| Horizon Power - Regional Interconnected Systems |
| Cossack-Historical Town |
Port Hedland |
South Hedland |
| Karratha |
Roebourne |
Wedgefield |
| Point Samson |
Note: Dampier, Pannawonica, Paraburdoo, Tom Price and Wickham are connected to the North West Interconnected System, however HorizonPower does not currently service them. There are a number of regional towns where mining companies who have operations in the area supply electricity to customers. These include: Cape Lambert, Dampier, Leinster, Newman, Pannawonica, Paraburdoo, Tom Price and Wickham. Other remote locations such as Coral Bay, Eucla and Monkey Mia have private arrangements operating within the towns.