About Us

Mainswest Pty Ltd is a civil and electrical contracting organisation specialising in the construction
and maintenance of underground utilities for both private and government clients throughout
Western Australia.

Mainswest Services


Underground Power

The State Underground Power Project (SUPP) in conjunction with the Office of Energy, Western Power and the relevant Local ...
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Communication Services

Mainswest have been heavily involved in the construction roll out of the NBN since October 2013 for NBN principal contractors ‘Fulton Hogan’ and ‘Downer Group’...
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Commercial Construction

Mainswest was enlisted by Georgiou to supply and install 35 street light poles including all excavation, concrete footings, conduit, cabling, switchboards...
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Substation Upgrades

Mainswest Pty Ltd is Western Power accredited to perform substation upgrades and maintenance including the following recent projects...
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Technical Services 1

Technical Services

Mainswest is a specialist in High Energy Services including equipment installations, servicing, testing and repairs. Mainswest is currently completing numerous high....
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Subdivisional Works

Mainswest has completed numerous subdivision projects for various developers, builders and asset owners including RJ Vincent, Georgiou Group...
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Core Competencies

Mainswest combines its commitment to quality and professionalism with the energy
and innovation necessary to provide cost effective, end-to-end services to clients.



Shelley West Breaking Ground Ceremony 1

Shelley West Breaking Ground Ceremony

Exciting times ahead for residents of Shelley West as Mainswest get underway in Q3 2020 in delivering underground power in conjunction with the State Government,…
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Trigg SUPP project – Last Pole Ceremony 3

Trigg Last Pole Ceremony

Traditionally a last pole ceremony is held at the conclusion of a successful Underground Power Project.
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Trigg Last Pole Ceremony 2

Scarborough NRUPP Pilot Program

Western Power constantly renew and upgrade the distribution overhead network when assets are coming to the end of their service life. Traditionally, the work involves…
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