Upgrading your power supply

If you are installing new commercial equipment or appliances that require three-phase power, you may need to:

upgrade your supply connection
convert your supply connection to three-phase
install a Current Transformer (CT) meter or
upgrade your existing CT meter

An electrical contractor/consultant will need to be engaged to complete a Design and Quotation Application form.

Type of upgrade	How to apply	What will it cost?
Upgrade your supply connection	Complete a Design and Quotation Application form	We will send you a quote
Convert to three-phase power (under 63 Amps single-phase or 32 Amps three-phase or normal residential supply)	Ask your electrical contractor to arrange it.	Standard charges and other costs apply
Convert to three-phase power (more than 63 Amps single-phase or 32 Amps three-phase)	Complete a Design and Quotation Application form	We will send you a quote
Install CT metering (necessary if your load exceeds 100Amps).	Complete a Design and Quotation Application form	We will send you a quote
Upgrade your CT Meter	Complete a Design and Quotation Application form	We will send you a quote

Note: increasing your electricity consumption may make you eligible to choose your electricity retailer.

You may have already installed major new equipment and noticed a change in the quality of your power supply. If so, please call us on 13 10 87.

Three-phase power - how much will it cost?

A - If your area has overhead powerlines

When upgrading to three-phase power we recommend you convert to an underground connection. The cost will include:

$681 for a subsidised residential connection, if eligible
the cost of a three-phase meter (arranged and billed through your electricity retailer); plus
your electrical contractor's costs to run an underground cable from the pillar to the meter box and any changes necessary to the internal wiring.

In some circumstances, it is possible to retain an overhead supply. If so, the cost will include:

$300 for a three-phase overhead service cable; plus
the cost of a three-phase meter (arranged through your electricity retailer).

Please discuss this with your electrical contractor, or call us on 13 10 87.

B - If your area has underground power

If your connection is in an underground area, the cost will include:

the cost of a three-phase meter (arranged through your electricity retailer); plus
your electrical contractor's costs to upgrade the cable from the pillar to the meter box and any changes necessary to the internal wiring.

Note: Make sure your electrical contractor has the necessary accreditation to make the connection to our pillar, or our crews will need to connect the supply, adding $300 to the cost.

A and B - Further costs may be incurred if

there is insufficient capacity on the local network or
the local network is only single-phase (this may apply in rural and outlying metro areas)

This will become evident when we assess your electrical contractor's application for a power upgrade.

Processing applications

Western Power will process applications in accordance with the Applications and Queuing Policy. You may be required to contribute to the costs of any works undertaken by Western Power to provide an upgraded connection in line with the Capital Contribution Policy.

Contact us

For enquiries about increasing your power usage please call 13 10 87 or make an online enquiry.