Company lists · Data refreshed September 2026

Top 25 Utility infrastructure companies based in Australia

Name: Utility infrastructure companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 312 companies tracked

RevenueBase identified 312 utility infrastructure companies headquartered in Australia as of September 2026 and tracks 28,078 professional contacts across them, including 9,564 with verified work emails. Melbourne is the largest hub.

This list covers utility infrastructure companies headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

312Companies

28,078Contacts tracked

9,564Verified emails

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The 25 largest utility infrastructure companies based in Australia

Ranked by team size

Top 25 of 312 utility infrastructure companies based in Australia, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to utility infrastructure companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Downer	Indirect evidence	North Ryde, AustraliaHQ checked Sep 22, 2026	10001+	10,666 contacts →
	Indirect evidence “Enabling communities to thrive.” Source: RevenueBase Database · checked Sep 22, 2026
2	SRG Global	Partial evidence	Perth, AustraliaHQ checked Sep 22, 2026	1,001-5,000	2,289 contacts →
	Partial evidence “SRG Global is a diversified infrastructure services company.” Source: RevenueBase Database · checked Sep 22, 2026
3	Service Stream	Indirect evidence	Docklands, AustraliaHQ checked Sep 22, 2026	1,001-5,000	1,823 contacts →
	Indirect evidence “Service Stream plays a vital role, working with our clients in keeping communities connected to essential network services across Australia.” Source: RevenueBase Database · checked Sep 22, 2026
4	Ergon Energy Network	Indirect evidence	Townsville, AustraliaHQ checked Sep 22, 2026	1,001-5,000	1,553 contacts →
	Indirect evidence “Ergon Energy supplies electricity to customers across a vast operating area of more than one million square kilometres – around 97% of the state of Queensland – from the expanding…” Source: RevenueBase Database · checked Sep 22, 2026
5	Zinfra	Partial evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	1,001-5,000	1,221 contacts →
	Partial evidence “At Zinfra, our purpose is to be the leading and trusted delivery partner, making a positive contribution to Australia’s energy infrastructure.” Source: RevenueBase Database · checked Sep 22, 2026
6	Urban Utilities	Indirect evidence	Fortitude Valley, AustraliaHQ checked Sep 22, 2026	1,001-5,000	1,064 contacts →
	Indirect evidence “We’re responsible for delivering world-class drinking water and wastewater services to the growing communities of Brisbane, Ipswich, Lockyer Valley, Somerset and Scenic Rim.” Source: RevenueBase Database · checked Sep 22, 2026
7	Power And Water Corporation	Partial evidence	Darwin, AustraliaHQ checked Sep 22, 2026	501-1,000	812 contacts →
	Partial evidence “Power and Water Corporation is a complex multi-utility with operations spanning the Northern Territory’s 1.3million square kilometres.” Source: RevenueBase Database · checked Sep 22, 2026
8	APD Global	Indirect evidence	Perth, AustraliaHQ checked Sep 22, 2026	1,001-5,000	455 contacts →
	Indirect evidence “We are APD Global.” Source: RevenueBase Database · checked Sep 22, 2026
9	Nacap PTY LTD	Partial evidence	Doncaster, AustraliaHQ checked Sep 22, 2026	201-500	441 contacts →
	Partial evidence “Nacap is a leading energy infrastructure contractor with four decades of global experience in delivering large-scale and complex energy infrastructure projects to power…” Source: RevenueBase Database · checked Sep 22, 2026
10	Atco Australia	Partial evidence	Perth, AustraliaHQ checked Sep 22, 2026	51-200	240 contacts →
	Partial evidence “ATCO's Australian operations are headquartered in Perth, Western Australia and specialises in creating innovative, customer focused energy and infrastructure solutions.” Source: RevenueBase Database · checked Sep 22, 2026
11	ACE Contractors Group Pty. LTD	Indirect evidence	Nunawading, AustraliaHQ checked Sep 22, 2026	201-500	205 contacts →
	Indirect evidence “Ace Contractors Group Pty.” Source: RevenueBase Database · checked Sep 22, 2026
12	Pensar	Partial evidence	Hamilton, AustraliaHQ checked Sep 22, 2026	201-500	198 contacts →
	Partial evidence “We offer insightful, original design thinking, implemented by a team with proven expertise to deliver flexible fit-for-purpose critical infrastructure solutions.” Source: RevenueBase Database · checked Sep 22, 2026
13	Shamrock Civil Engineering	Partial evidence	Brisbane, AustraliaHQ checked Sep 22, 2026	51-200	185 contacts →
	Partial evidence “Shamrock Civil is a privately owned civil construction company, delivering services to the Defence & Government sectors, gas and mining, transport infrastructure and commercial.” Source: RevenueBase Database · checked Sep 22, 2026
14	Cape Dunstans	Strong evidence	South Guildford, AustraliaHQ checked Sep 22, 2026	201-500	176 contacts →
	Strong evidence “Cape Dunstans, an industry leader, delivers for its clients with a team of specialists across mining services, infrastructure and utilities installation.” Source: RevenueBase Database · checked Sep 22, 2026
15	PSD Energy	Indirect evidence	Pooraka, AustraliaHQ checked Sep 22, 2026	201-500	140 contacts →
	Indirect evidence “PSD Energy’s distinctive operating model (EPC+) combines in-house engineering, manufacturing and system integration, construction and commissioning, supported by a global supply…” Source: RevenueBase Database · checked Sep 22, 2026
16	ETS Infrastructure Management	Partial evidence	Lilydale, AustraliaHQ checked Sep 22, 2026	1,001-5,000	131 contacts →
	Partial evidence “For over 40 years, ETS Infrastructure Management has been a leading force in Australia's infrastructure sector.” Source: RevenueBase Database · checked Sep 22, 2026
17	MONDO	Indirect evidence	Southbank, AustraliaHQ checked Sep 22, 2026	501-1,000	131 contacts →
	Indirect evidence “At Mondo, we see a bright future.” Source: RevenueBase Database · checked Sep 22, 2026
18	Heyday Group	Indirect evidence	Lane Cove West, AustraliaHQ checked Sep 22, 2026	201-500	129 contacts →
	Indirect evidence “Heyday Group, is a project delivery enterprise that is strongly focused on providing a wide range of design, implementation and maintenance services to the Australian Market.” Source: RevenueBase Database · checked Sep 22, 2026
19	Grampians Wimmera Mallee Water	Indirect evidence	Horsham, AustraliaHQ checked Sep 22, 2026	51-200	122 contacts →
	Indirect evidence “Grampians Wimmera Mallee Water (GWMWater) is an innovative and exciting employer that is committed to contributing to the sustainable growth of communities within our region.” Source: RevenueBase Database · checked Sep 22, 2026
20	Mirait Technologies Australia	Partial evidence	Campbellfield, AustraliaHQ checked Sep 22, 2026	51-200	110 contacts →
	Partial evidence “MIRAIT Technologies Australia is a national telecommunications, energy, and ICT infrastructure construction and maintenance provider, with an established reputation for technical…” Source: RevenueBase Database · checked Sep 22, 2026
21	Wabtec Control Systems	Indirect evidence	Osborne Park, AustraliaHQ checked Sep 22, 2026	51-200	109 contacts →
	Indirect evidence “Wabtec Control Systems (WCS) is a leading provider of industrial electrical and communications solutions, specialising in rail.” Source: RevenueBase Database · checked Sep 22, 2026
22	Altogether Group	Indirect evidence	North Sydney, AustraliaHQ checked Sep 22, 2026	51-200	107 contacts →
	Indirect evidence “At Altogether, we're innovating in the way we supply essential services including energy, water and data.” Source: RevenueBase Database · checked Sep 22, 2026
23	UCS Group	Indirect evidence	Bendigo, AustraliaHQ checked Sep 22, 2026	201-500	107 contacts →
	Indirect evidence “Founded in 1995 in Bendigo, Victoria, Underground Cable Systems rebranded in 2019 to become UCS Group (UCS).” Source: RevenueBase Database · checked Sep 22, 2026
24	Powerplant Project Services	Strong evidence	Hallam, AustraliaHQ checked Sep 22, 2026	51-200	103 contacts →
	Strong evidence “Powerplant Project Services is an award winning, independent utility infrastructure specialist.” Source: RevenueBase Database · checked Sep 22, 2026
25	Civil Infrastructure Group	Partial evidence	Campbellfield, AustraliaHQ checked Sep 22, 2026	51-200	99 contacts →
	Partial evidence “Civil Infrastructure Group (CIG) was formed in 2016 to provide specialist construction services to the civil infrastructure industry in Victoria.” Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: utility infrastructure companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names utility infrastructure companies.
Partial evidence: Its own public description names part of utility infrastructure companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name utility infrastructure companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 312 utility infrastructure companies based in Australia

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Utility infrastructure companies based in Australia at a glance

As of Sep 22, 2026

34.1%Verified-email coverage

90.0Average contacts per company

11-50Median size (employees)

7.1%Largest-city concentration · Melbourne

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

125

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 312 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among utility infrastructure companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “utility infrastructure companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names utility infrastructure companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among utility infrastructure companies, and records with no verified work email. Companies headquartered outside Australia are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 9,564 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names utility infrastructure companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many utility infrastructure companies are there based in Australia?

RevenueBase identified 312 utility infrastructure companies headquartered in Australia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Downer, headquartered in North Ryde, tops this list with the largest team on record.

Which city has the most utility infrastructure companies?

Melbourne leads with 22 headquartered companies, followed by Perth (20) and Sydney (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 9,564 verified decision-maker contacts tracked across these 312 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.