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As part of Western Power’s commitment to transforming the network to facilitate the growth of renewables and electrification, we’re introducing one standard power supply allocation across the South West Interconnected System (SWIS) to meet the evolving energy needs of Western Australians.

From 11 April 2023, Western Power will offer a standard connection service capacity of 63A for single-phase (240V) connections, regardless of location ensuring the same allocation for all small use homes and businesses across the entire network.


Capacity limits for rural split-phase connections will also increase from 20A to 32A per phase, where the service is available. Three-phase connection services remain unchanged at 32A per phase across the SWIS and is dependent on service availability.

The increase to rural supply follows a 24-week rural supply allocation trial that ran from October 2022 to March 2023 that established that a standardised supply allocation could be uniformly applied across rural and metro areas and managed in a safe and reliable way for community benefit.  

Western Power’s comprehensive assessment of network impact and load pattern changes using Advanced Meter Infrastructure (AMI) data taken during the trial confirmed that the existing electrical infrastructure could accommodate the increased regional load requirements.

It demonstrates the network’s adaptability to the changing energy needs of customers, and forms part of the State Government’s commitment to delivering the best possible power supply to the community.

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