The South West Interconnected System (SWIS) is the biggest interconnected network in WA. The SWIS consists of nearly 88,000 kilometres of powerlines stretching from Kalbarri in the north to Kalgoorlie in the east and south to Albany.
Horizon Power supplies electricity to all parts of Western Australia that lie outside of the SWIS. This includes the Kimberley, Pilbara and parts of the Mid West and Goldfields region.
Unlike Western Power, Horizon Power generates the electricity, delivers it to homes and sends out the bill. They are responsible for the entire electricity supply process outside of Western Power’s network.
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Page update on 21 October 2009
