Company lists · Data refreshed September 2026

Top 22 Geothermal consultants based in Australia

Name: Geothermal consultants based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 1,130 companies tracked

RevenueBase identified 1,130 geothermal consultants headquartered in Australia as of September 2026 and tracks 49,037 professional contacts across them, including 17,745 with verified work emails. Perth is the largest hub.

This list covers geothermal consultants 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 20, 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 20, 2026 86% judged on-target in blind review

1,130Companies

49,037Contacts tracked

17,745Verified emails

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The 22 largest geothermal consultants based in Australia

Ranked by team size

Top 22 of 1,130 geothermal consultants based in Australia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal consultants: 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	Worley	Indirect evidence	Sydney, AustraliaHQ checked Sep 20, 2026	10001+	34,763 contacts →
	Indirect evidence “Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.” Source: RevenueBase Database · checked Sep 20, 2026
2	ADP Consulting	Partial evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	201-500	468 contacts →
	Partial evidence “ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.” Source: RevenueBase Database · checked Sep 20, 2026
3	Douglas Partners	Partial evidence	West Ryde, AustraliaHQ checked Sep 20, 2026	501-1,000	466 contacts →
	Partial evidence “Welcome to Douglas Partners Pty Ltd, a leading engineering consultancy specialising in geotechnics, rock mechanics, environment, groundwater, earthworks and geophysics.” Source: RevenueBase Database · checked Sep 20, 2026
4	Jbs&g	Partial evidence	Sydney, AustraliaHQ checked Sep 20, 2026	201-500	262 contacts →
	Partial evidence “Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…” Source: RevenueBase Database · checked Sep 20, 2026
5	PSM	Indirect evidence	North Ryde, AustraliaHQ checked Sep 20, 2026	51-200	223 contacts →
	Indirect evidence “PSM provides specialised design and investigation services for engineering in rock, soil and water.” Source: RevenueBase Database · checked Sep 20, 2026
6	ATC Williams	Indirect evidence	Mordialloc, AustraliaHQ checked Sep 20, 2026	201-500	222 contacts →
	Indirect evidence “ATC Williams is a consulting engineering company specialising in providing custom solutions for tailings, water, waste, and resource recovery projects.” Source: RevenueBase Database · checked Sep 20, 2026
7	MEC	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 20, 2026	51-200	163 contacts →
	Indirect evidence “MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: RevenueBase Database · checked Sep 20, 2026
8	RSC	Indirect evidence	Perth, AustraliaHQ checked Sep 20, 2026	51-200	160 contacts →
	Indirect evidence “RSC was established early in 2008 and now operates a global group of companies with subsidiaries in Africa, Asia, Oceania and Europe.” Source: RevenueBase Database · checked Sep 20, 2026
9	Alliance Geotechnical	Partial evidence	Seven Hills, AustraliaHQ checked Sep 20, 2026	51-200	120 contacts →
	Partial evidence “Alliance Geotechnical is an established and highly respected Geotechnical and Environmental consultancy firm with a proven track record in delivering and exceeding our client’s…” Source: RevenueBase Database · checked Sep 20, 2026
10	Mining ONE Consultants	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	51-200	117 contacts →
	Indirect evidence “Mining One was established in August 2005 to provide technical expertise in the fields of geotechnical engineering, resource geology, mining engineering, processing, numerical…” Source: RevenueBase Database · checked Sep 20, 2026
11	Macquarie Geotechnical	Indirect evidence	Bathurst, AustraliaHQ checked Sep 20, 2026	51-200	108 contacts →
	Indirect evidence “Macquarie Geotechnical is a leading provider of geotechnical services, supporting the construction, government, mining, renewable energy, groundwater, and environmental sectors.” Source: RevenueBase Database · checked Sep 20, 2026
12	EI Australia	Indirect evidence	Pyrmont, AustraliaHQ checked Sep 20, 2026	51-200	93 contacts →
	Indirect evidence “Welcome to EI Australia an Australian-owned, ISO 9001, 14001 & 4801 Certified, professional services company providing Environmental, Geotechnical and Structural engineering…” Source: RevenueBase Database · checked Sep 20, 2026
13	Xenith	Indirect evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	51-200	92 contacts →
	Indirect evidence “Xenith is an established consulting firm that delivers outstanding exploration, mine planning, operational and financial solutions to resources companies in Australia and around…” Source: RevenueBase Database · checked Sep 20, 2026
14	EMTEK	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	51-200	86 contacts →
	Indirect evidence “EMtek at a glance We are a multidisciplinary engineering company built on strong values, sound technical judgement and practical project delivery.” Source: RevenueBase Database · checked Sep 20, 2026
15	AMPS	Indirect evidence	Subiaco, AustraliaHQ checked Sep 20, 2026	51-200	85 contacts →
	Indirect evidence “Since 2011, AMPS has been an industry leader in mining technical services optimisations, systems, and training, with significant experience in operational underground and open pit…” Source: RevenueBase Database · checked Sep 20, 2026
16	Pilecom PTY LTD	Indirect evidence	Osborne Park, AustraliaHQ checked Sep 20, 2026	201-500	82 contacts →
	Indirect evidence “Pilecom is a leading mechanical installer of utility scale solar projects throughout the AU/NZ region.” Source: RevenueBase Database · checked Sep 20, 2026
17	AMOG	Indirect evidence	Glen Waverley, AustraliaHQ checked Sep 20, 2026	51-200	80 contacts →
	Indirect evidence “Expertise.” Source: RevenueBase Database · checked Sep 20, 2026
18	Pitch Black Group	Partial evidence	Brisbane, AustraliaHQ checked Sep 20, 2026	51-200	76 contacts →
	Partial evidence “Pitch Black Group is an Australian professional engineering and project services consultancy.” Source: RevenueBase Database · checked Sep 20, 2026
19	Cell Engineering	Partial evidence	Mackay, AustraliaHQ checked Sep 20, 2026	51-200	69 contacts →
	Partial evidence “Cell Engineering was established in 2005 and has become a major engineering consultant for the specialist areas involved in coal mining and infrastructure development.” Source: RevenueBase Database · checked Sep 20, 2026
20	Palaris	Partial evidence	Newcastle, AustraliaHQ checked Sep 20, 2026	51-200	69 contacts →
	Partial evidence “Palaris is an independent mining advisory built by mining professionals, not career consultants.” Source: RevenueBase Database · checked Sep 20, 2026
21	JK Group	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 20, 2026	51-200	65 contacts →
	Indirect evidence “The JK Group is a proudly employee owned and managed company that values professionalism through honesty, dependability and integrity.” Source: RevenueBase Database · checked Sep 20, 2026
22	E2m	Partial evidence	Milton, AustraliaHQ checked Sep 20, 2026	11-50	64 contacts →
	Partial evidence “At e2m, we set the consultancy standard for terrestrial ecology, environmental approvals and environmental compliance.” Source: RevenueBase Database · checked Sep 20, 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: geothermal consultants. 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 geothermal consultants.
Partial evidence: Its own public description names part of geothermal consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal consultants. 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 22 of 1,130 geothermal consultants based in Australia

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Geothermal consultants based in Australia at a glance

As of Sep 20, 2026

36.2%Verified-email coverage

43.4Average contacts per company

1-10Median size (employees)

14.9%Largest-city concentration · Perth

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

733

11-50

308

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 1,130 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 geothermal consultants, 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 “geothermal consultants”. 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 geothermal consultants), 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 geothermal consultants, 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, 17,745 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 20, 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.

Geothermal consultants by metro

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 geothermal consultants, 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 geothermal consultants are there based in Australia?

RevenueBase identified 1,130 geothermal consultants 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?

Worley, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most geothermal consultants?

Perth leads with 168 headquartered companies, followed by Brisbane (90) and Melbourne (84).

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 17,745 verified decision-maker contacts tracked across these 1,130 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 20, 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.