Phase conversion
Who is this for?
For when you want to convert an existing single phase electricity supply to a standard three phase supply, or convert three phase supply to one phase.
How long will it take?
5-7 weeks to disconnect and reconnect after the application is submitted.
How much will it cost?
$570 - $800*
*Prices will increase by 2.75% as of 21 July 2026
Overhead connections
| Business hours | $800* |
| After hours | $830* |
Underground connections
| Business hours | $570* |
| After hours | $630* |
Business hours are between 7:30am and 4pm Monday to Friday, excluding public holidays.
*Prices will increase by 2.75% as of 21 July 2026
A registered electrical contractor will need to submit this application.
If three phase is available use this service request to upgrade an existing single phase supply to a standard three phase power supply, or convert three phase supply to one phase.
To check if three phase power is available at your property, complete our enquiry form.
What to include with your application
Preliminary Notice number
An electrical contractor intending to carry out any notifiable electrical installing work or cause any notifiable electrical installing work to be carried out must submit a preliminary notice to Western Power before the proposed electrical installing work is commenced. You’ll need to ensure the notice is for an alteration or addition.
Existing meter number(s) to be disconnected
Meter numbers can be found on the electricity bill or the physical meter.
Ready to apply for a phase conversion?
Once you’ve gotten the above, you are ready to apply.
FAQs
You will be charged a design fee upon lodging your application.
Once your project proceeds to construction phase the design fee, excluding GST, is deducted from the price on your Access Offer and Acceptance.
Sometimes your circumstances change and you may need to cancel or change the information within your application after you have submitted it to us.
If you wish to change the scope of work in your application we will first review the change and then either:
- continue the project with the variation and invoice you for any additional materials, design work and remobilisation costs incurred. We will typically only take this approach when the change is very minor.
or
- if the change is significant we will cancel your project. You will need to submit a new application with your new requirements.
For cancelled applications we will invoice you for the costs incurred up to the point of cancellation (time and materials). If construction work has already commenced we will refund the difference from your access offer less any costs incurred.