Company lists · Data verified August 2026

Top 25 Clean energy consultancy companies based in Australia

Name: Clean energy consultancy companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 969 companies tracked

There are 969 clean energy consultancy companies headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 44,135 professional contacts across them, including 15,642 with verified work emails and 4,914 with mobile numbers. Sydney is the largest hub.

This list covers clean energy consultancy companies 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.

969Companies

44,135Contacts tracked

15,642Verified emails

4,914Mobile numbers

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The 25 largest clean energy consultancy companies based in Australia

Ranked by team size

Top 25 of 969 clean energy consultancy companies 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	Worley	Sydney	10001+	36,380	12,678
2	Photon Energy Group	Sydney	201-500	408	187
3	Umwelt Environmental & Social Consultants	Melbourne	201-500	326	234
4	Entura	Hobart	201-500	272	174
5	MONDO	Ringwood	501-1,000	131	57
6	Brighte	Sydney	51-200	115	81
7	Energetics	North Sydney	51-200	95	63
8	Acle Services PTY LTD	Camberwell	51-200	94	46
9	Rennie	Sydney	51-200	78	66
10	Energy Action	Sydney	51-200	77	57
11	OPC	Perth	51-200	59	20
12	Struber	Melbourne	51-200	54	42
13	Western Environmental	Richmond	51-200	52	1
14	Element Advisory Part Of SLR	Perth	51-200	50	22
15	Environmental Earth Sciences International Eesi	Chatswood	51-200	49	29
16	The Green Guys Group	Regents Park	51-200	46	25
17	Stepchange	Perth	51-200	43	8
18	Solarhub	Thomastown	51-200	41	27
19	Unified Energy Services	Southbank	51-200	41	27
20	Solar Naturally	Perth	51-200	39	15
21	Renewables Technical Services	Bondi Junction	51-200	34	11
22	Kuga Energy	Keysborough	51-200	33	4
23	Energy Makeovers	Sunshine West	51-200	32	16
24	Smarter Power Solutions	Melbourne	51-200	31	17
25	GEM Energy	Pinkenba	51-200	30	9

Showing 25 of 969 clean energy consultancy companies based in Australia

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Clean energy consultancy companies based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 136 HQs

4,914Contacts with mobile numbers

83Emails re-verified in last 30 days

Companies by employee count

1-10

662

11-50

232

51-200

201-500

501-1,000

1,001-5,000

10001+

Clean energy consultancy companies by metro

Metro	Companies
Clean energy consultancy companies in Sydney	136
Clean energy consultancy companies in Melbourne	132
Clean energy consultancy companies in Brisbane	78
Clean energy consultancy companies in Perth	73
Clean energy consultancy companies in Adelaide	39
Clean energy consultancy companies in Hobart	9
Clean energy consultancy companies in Canberra	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 “clean energy consultancy companies”, 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; 83 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 clean energy consultancy companies are there based in Australia?

There are 969 clean energy consultancy companies headquartered in Australia as of August 2026 (RevenueBase).

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 clean energy consultancy companies?

Sydney leads with 136 headquartered companies, followed by Melbourne (132) and Brisbane (78).

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 15,642 verified decision-maker contacts tracked across these 969 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.