Western Power is a statutory corporation established by the Electricity Corporations Act 2005 (WA).

It is owned by the State Government of Western Australia and is accountable to the Minister for Energy.

[1] It is responsible for building, maintaining and operating the electricity network within the South West Interconnected System[2] (SWIS), the poles and wires or energy grid.

When the original Western Power Corporation was split it was separated into four independent companies: The SWIS reaches from Albany in the south, Kalbarri in the north and Kalgoorlie in the east of the state and includes the Perth metropolitan area.

[3] The Western Power network consists of more than 103,000 km (64,001 mi) of powerlines, 825,788 poles & towers, 276,000 streetlights and 154 transmission substations.