Company lists · Data verified August 2026

Top 25 Climate consulting firms based in Australia

Name: Climate consulting firms based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 639 companies tracked

There are 639 climate consulting firms headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 6,332 professional contacts across them, including 2,918 with verified work emails and 482 with mobile numbers. Sydney is the largest hub.

This list covers climate consulting firms headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

639Companies

6,332Contacts tracked

2,918Verified emails

482Mobile numbers

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The 25 largest climate consulting firms based in Australia

Ranked by team size

Top 25 of 639 climate consulting firms based in Australia, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Anthesis Group	Adelaide	1,001-5,000	887	578
2	Umwelt Environmental & Social Consultants	Melbourne	201-500	326	234
3	Jbs&g	Perth	201-500	264	225
4	ECO Logical Australia PTY LTD	Huskisson	201-500	221	119
5	Energetics	North Sydney	51-200	95	63
6	Edge Impact	Melbourne	51-200	84	52
7	Rennie	Sydney	51-200	78	66
8	Acacia Environmental Management	St. Andrews	201-500	59	32
9	Struber	Melbourne	51-200	54	42
10	Icubed Consulting	Brisbane	51-200	53	38
11	Western Environmental	Richmond	51-200	52	1
12	Element Advisory Part Of SLR	Perth	51-200	50	22
13	MRA Consulting Group	Drummoyne	11-50	49	37
14	Environmental Earth Sciences International Eesi	Chatswood	51-200	49	29
15	Marsden Jacob Associates	North Sydney	11-50	46	34
16	ERIAS	Brisbane	11-50	46	32
17	RHELM	Newcastle West	11-50	39	32
18	ITP Renewables	Sydney	11-50	37	25
19	Assured Environmental AE	Alexandria	11-50	33	21
20	FG Advisory	Melbourne	11-50	28	18
21	Ecoplanning PTY LTD	Woonona	11-50	26	21
22	Dartmouth Consulting	Melbourne	11-50	25	14
23	Arche Energy	Launceston	11-50	23	16
24	The Climate Risk Group PTY LTD	Chatswood	11-50	23	16
25	Edsico Management	Melbourne	51-200	23	6

Showing 25 of 639 climate consulting firms based in Australia

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Climate consulting firms based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 104 HQs

482Contacts with mobile numbers

20Emails re-verified in last 30 days

Companies by employee count

1-10

488

11-50

118

51-200

201-500

1,001-5,000

5,001-10,000

10001+

Climate consulting firms by metro

Metro	Companies
Climate consulting firms in Sydney	104
Climate consulting firms in Melbourne	96
Climate consulting firms in Brisbane	62
Climate consulting firms in Perth	50
Climate consulting firms in Adelaide	24
Climate consulting firms in Newcastle	12
Climate consulting firms in Hobart	8

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “climate consulting firms”, with match quality audited by blind human judging, and headquartered in Australia.
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: Contact records re-verify on a rolling cadence; 20 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many climate consulting firms are there based in Australia?

There are 639 climate consulting firms headquartered in Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

Anthesis Group, headquartered in Adelaide, tops this list with the largest team on record.

Which city has the most climate consulting firms?

Sydney leads with 104 headquartered companies, followed by Melbourne (96) and Brisbane (62).

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 2,918 verified decision-maker contacts tracked across these 639 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.