Company lists · Data refreshed September 2026

Top 25 Climate consultancies based in Sydney, Australia

Name: Climate consultancies based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 255 companies tracked

RevenueBase identified 255 climate consultancies headquartered in Sydney, Australia as of September 2026 and tracks 36,796 professional contacts across them, including 13,400 with verified work emails. Sydney is the largest hub.

This list covers climate consultancies headquartered in Sydney, 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 21, 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 21, 2026 86% judged on-target in blind review

255Companies

36,796Contacts tracked

13,400Verified emails

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The 25 largest climate consultancies based in Sydney, Australia

Ranked by team size

Top 25 of 255 climate consultancies based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to climate consultancies: 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 21, 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 21, 2026
2	Jbs&g	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 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 21, 2026
3	ECO Logical Australia PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	201-500	211 contacts →
	Indirect evidence “We exist to empower people to make a difference.” Source: RevenueBase Database · checked Sep 21, 2026
4	SJA	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	51-200	145 contacts →
	Indirect evidence “SJA Construction Services is a specialist consultancy firm providing independent expert, advisory and technical services to the construction and infrastructure industry across…” Source: RevenueBase Database · checked Sep 21, 2026
5	Edge Impact	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	51-200	84 contacts →
	Indirect evidence “Edge Impact exists to create a world where unsustainable is unthinkable.” Source: RevenueBase Database · checked Sep 21, 2026
6	ICA Partners	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	48 contacts →
	Indirect evidence “ICA Partners is one of Australia’s leading boutique advisory firms.” Source: RevenueBase Database · checked Sep 21, 2026
7	Mecone	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	48 contacts →
	Indirect evidence “Mecone is a leading urban planning, policy and development advisory consultancy with offices in Sydney, Western Sydney, Melbourne, and Brisbane.” Source: RevenueBase Database · checked Sep 21, 2026
8	BWD Strategic	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	45 contacts →
	Indirect evidence “BWD is a pure-play, independent sustainability consultancy and B Corp with offices in Sydney, New York, Brisbane, Phoenix, and Auckland.” Source: RevenueBase Database · checked Sep 21, 2026
9	Endgame Analytics	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	36 contacts →
	Indirect evidence “In a world of complexity and big decisions, there are choices that are simple and clear, yet flawed.” Source: RevenueBase Database · checked Sep 21, 2026
10	Nutbrook Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	32 contacts →
	Indirect evidence “Nutbrook Group was established with the objective of integrating a values-driven approach to Consultancy, Engineering and Project Management services.” Source: RevenueBase Database · checked Sep 21, 2026
11	Athena Blue Global	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	26 contacts →
	Indirect evidence “Athena Blue Global helps shape a better future for forward-thinking businesses worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
12	REASK	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	26 contacts →
	Indirect evidence “Reask is a science and technology company applying cutting-edge data science techniques to natural hazard modelling.” Source: RevenueBase Database · checked Sep 21, 2026
13	Edsico Management	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	51-200	23 contacts →
	Indirect evidence “With decades of experience, EDSICO Management provides fully integrated range of management consultancy services.” Source: RevenueBase Database · checked Sep 21, 2026
14	Leading Edge Energy	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	21 contacts →
	Indirect evidence “What we do Leading Edge Energy is an integrated energy management consultancy powered by the latest technology to offer market-leading energy solutions for your business.” Source: RevenueBase Database · checked Sep 21, 2026
15	Nettzero	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “NettZero is a 100% Australian owned and operated Sustainability Consultancy which caters to a multitude of sustainability demands concerning on Businesses.” Source: RevenueBase Database · checked Sep 21, 2026
16	Freshwater Strategy	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “Freshwater Strategy operates at the nexus of capital, business, and government, transforming uncertainty into opportunity.” Source: RevenueBase Database · checked Sep 21, 2026
17	Cutlermerz	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	19 contacts →
	Indirect evidence “We are a specialist management, economic and engineering consultancy to the power and energy sector.” Source: RevenueBase Database · checked Sep 21, 2026
18	Energylink Services PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	18 contacts →
	Indirect evidence “EnergyLink Services is a multi-disciplinary, specialist, energy and carbon consultancy and project developer.” Source: RevenueBase Database · checked Sep 21, 2026
19	Energy Estate	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “Energy Estate’s mission is to accelerate decarbonisation, in a manner that drives innovation and delivers with respect and impact.” Source: RevenueBase Database · checked Sep 21, 2026
20	Energy Global Company	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “Established in March 2017, Energy Global Company Pty Ltd (EGC) has been building and providing consulting services to retail energy businesses across the globe.” Source: RevenueBase Database · checked Sep 21, 2026
21	Calibrate Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	15 contacts →
	Indirect evidence “Calibrate Consulting is a leading boutique claims consultancy providing specialist services across Australia, New Zealand, and the Asia-Pacific.” Source: RevenueBase Database · checked Sep 21, 2026
22	Kinesis	Partial evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	15 contacts →
	Partial evidence “Kinesis is a leading climate tech business that helps organisations step-change their net-zero impact.” Source: RevenueBase Database · checked Sep 21, 2026
23	Beam Planning	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “Beam Planning was founded in 2024 with the aim to illuminate the path and support our clients on their planning journey.” Source: RevenueBase Database · checked Sep 21, 2026
24	Fichtner Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “The Fichtner Group is one of the leading independent engineering consultancy firms in the world.” Source: RevenueBase Database · checked Sep 21, 2026
25	Keylan Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “KEYLAN Consulting provides personalised, expert urban planning and policy advisory services to a diverse range of industry and government clients.” Source: RevenueBase Database · checked Sep 21, 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: climate consultancies. 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 climate consultancies.
Partial evidence: Its own public description names part of climate consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name climate consultancies. 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 255 climate consultancies based in Sydney, Australia

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Climate consultancies based in Sydney, Australia at a glance

As of Sep 21, 2026

36.4%Verified-email coverage

144.3Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Sydney

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

192

11-50

51-200

201-500

10001+

Email recency for this list is measured across the whole Australia list rather than for Sydney, so it is reported there. Company counts and contact totals on this page are exact for Sydney, over 255 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 climate consultancies, 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 Sydney, Australia whose own description of what they do matches “climate consultancies”. 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 climate consultancies), 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 climate consultancies, and records with no verified work email. Companies headquartered outside Sydney 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, 13,400 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 21, 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.

Climate consultancies by metro in Australia

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 climate consultancies, 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 climate consultancies are there based in Sydney, Australia?

RevenueBase identified 255 climate consultancies headquartered in Sydney, 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 climate consultancies?

Sydney leads with 255 headquartered companies, followed by Melbourne (223) and Brisbane (132).

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 13,400 verified decision-maker contacts tracked across these 255 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 21, 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.