Company lists · Data verified August 2026

Top 25 Energy consulting firms based in Australia

Name: Energy 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 581 companies tracked

There are 581 energy consulting firms headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 41,863 professional contacts across them, including 14,746 with verified work emails and 4,778 with mobile numbers. Sydney is the largest hub.

This list covers energy 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.

581Companies

41,863Contacts tracked

14,746Verified emails

4,778Mobile numbers

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The 25 largest energy consulting firms based in Australia

Ranked by team size

Top 25 of 581 energy 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	Worley	Sydney	10001+	36,380	12,678
2	Photon Energy Group	Sydney	201-500	408	187
3	Equinox Engineering LTD	Brisbane	201-500	391	269
4	GPA Engineering	Berrimah	201-500	341	264
5	MONDO	Ringwood	501-1,000	131	57
6	ZEMBL	Sydney	51-200	129	85
7	AZZO	District	51-200	82	42
8	Energy Action	Sydney	51-200	77	57
9	Kerfoot PTY LTD	Seven Hills	51-200	61	47
10	Western Environmental	Richmond	51-200	52	1
11	Stepchange	Perth	51-200	43	8
12	Global Power Energy	Brisbane	11-50	41	30
13	Power Choice	Stafford	11-50	39	19
14	Solar Naturally	Perth	51-200	39	15
15	ITP Renewables	Sydney	11-50	37	25
16	Renewables Technical Services	Bondi Junction	51-200	34	11
17	Kuga Energy	Keysborough	51-200	33	4
18	Austec Building Automation	Townsville	51-200	30	21
19	GEM Energy	Pinkenba	51-200	30	9
20	Lidiar Group	Darwin City	11-50	29	20
21	Energy Intelligence	Hawthorn East	11-50	26	23
22	Arche Energy	Launceston	11-50	23	16
23	Trans Tasman Energy Group	Fitzroy	51-200	21	17
24	Bonlec PTY LTD	Townsville	11-50	21	11
25	Cutlermerz	Sydney	11-50	19	18

Showing 25 of 581 energy consulting firms based in Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 14,746 reachable decision-makers.

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Energy consulting firms based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 85 HQs

4,778Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

397

11-50

143

51-200

201-500

501-1,000

1,001-5,000

10001+

Energy consulting firms by metro

Metro	Companies
Energy consulting firms in Sydney	85
Energy consulting firms in Melbourne	73
Energy consulting firms in Brisbane	53
Energy consulting firms in Perth	45
Energy consulting firms in Adelaide	23
Energy consulting firms in North Sydney	5
Energy consulting firms in Docklands	4

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 “energy 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; 0 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 energy consulting firms are there based in Australia?

There are 581 energy consulting firms 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 energy consulting firms?

Sydney leads with 85 headquartered companies, followed by Melbourne (73) and Brisbane (53).

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 14,746 verified decision-maker contacts tracked across these 581 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.