Smart grid
Powerlines and substation projects
- Powerline projects
- Ellenbrook underground power project
- Powering Perth's Communities
- Guildford to Southern terminal transmission line
- Hopeland transmission line
- Kemerton to Binningup transmission line
- Kojonup to Albany transmission line
- Mid West Energy Project
- Muja to Wellstead transmission line
- Northern Terminal to Hadfields transmission line
- Automation works
- Bunbury-Busselton-Margaret River Project Suite
- Ellenbrook underground power project
- Substation projects
- Balcatta substation
- Baldivis substation
- Bayswater substation
- Collier substation
- Cottesloe substation upgrade
- Forrestdale zone substation site
- Furnissdale substation land acquisition
- Geraldton Port and CBD Power Requirements Project
- Hocking substation land acquisition
- Joondanna zone substation
- Maddington substation
- Manning Street substation upgrade
- Melville and Fremantle power options
- Morley substation
- Mundaring Weir substation
- PTA Sutherland Substation Cable Supply Project
- Sawyers Valley substation upgrade
- South East Terminal substation
- Western Terminal Reinforcement Project
- Balcatta substation
- About substations
- Site selection process
- Community concerns
- Project archive
- Powerline projects
Underground power
Helicopter line maintenance
Wood poles
Our infrastructure
We operate and maintain the network also known as the SWIS (South West Interconnected System), The SWIS reaches from Albany in the south, Kalbarri in the north and Kalgoorlie in the east.
Network – facts and figures
Our network:
- consists of around 96,000 km of powerlines
- about 21 terminal substations
- about 120 (and growing) zone substations
- around 13,500 distribution substations
- around 330 voltage regulator sites
- powers more than 965,000 homes every day
- provides power to over 1.5 million homes in the SWIS
- powers approximately 225,000 streetlights
- is one of the largest, most isolated networks in the world
Substations
Substations form an important part of the electricity network, providing power to you every time a light switch or appliance is turned on.
More information:
