Company lists · Data refreshed September 2026

Top 25 Sustainable energy consultants based in Sydney, Australia

Name: Sustainable energy consultants based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 82 companies tracked

RevenueBase identified 82 sustainable energy consultants headquartered in Sydney, Australia as of September 2026 and tracks 35,260 professional contacts across them, including 12,567 with verified work emails. Melbourne is the largest hub.

This list covers sustainable energy consultants 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 18, 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 18, 2026 86% judged on-target in blind review

82Companies

35,260Contacts tracked

12,567Verified emails

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The 25 largest sustainable energy consultants based in Sydney, Australia

Ranked by team size

Top 25 of 82 sustainable energy consultants based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable energy 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	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	10001+	34,763 contacts →
	Partial evidence “Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.” Source: RevenueBase Database · checked Sep 18, 2026
2	ZEMBL	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	51-200	133 contacts →
	Partial evidence “We help businesses buy better energy, saving them time and improving their bottom line.” Source: RevenueBase Database · checked Sep 18, 2026
3	Leading Edge Energy	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	21 contacts →
	Strong 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 18, 2026
4	Iberdrola Australia Smart Energy Solutions	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	51-200	21 contacts →
	Partial evidence “In 2021, Autonomous Energy became part of the Iberdrola Australia group.” Source: RevenueBase Database · checked Sep 18, 2026
5	Cutlermerz	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	19 contacts →
	Strong evidence “We are a specialist management, economic and engineering consultancy to the power and energy sector.” Source: RevenueBase Database · checked Sep 18, 2026
6	Energylink Services PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	18 contacts →
	Strong evidence “EnergyLink Services is a multi-disciplinary, specialist, energy and carbon consultancy and project developer.” Source: RevenueBase Database · checked Sep 18, 2026
7	Energy Estate	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	16 contacts →
	Partial 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 18, 2026
8	Renewco Solar	Indirect evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	16 contacts →
	Indirect evidence “At RenewCo Solar we pride ourselves on the work we do.” Source: RevenueBase Database · checked Sep 18, 2026
9	Energy Global Company	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	15 contacts →
	Partial 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 18, 2026
10	Fichtner Australia	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	13 contacts →
	Partial evidence “The Fichtner Group is one of the leading independent engineering consultancy firms in the world.” Source: RevenueBase Database · checked Sep 18, 2026
11	GWA Consultants Australia PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	12 contacts →
	Strong evidence “UNDERSTANDING THE PROBLEM & IDENTIFYING REAL SOLUTIONS GWA Consultants is a specialist Mechanical Engineering and Energy Consultancy firm with over 25 years of experience in the…” Source: RevenueBase Database · checked Sep 18, 2026
12	E-Green Electrical	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	11 contacts →
	Partial evidence “E-Green Electrical are the pioneers in energy efficiency.” Source: RevenueBase Database · checked Sep 18, 2026
13	Pure Environment	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	6 contacts →
	Strong evidence “We are a dedicated consultancy driven by a profound commitment to fostering sustainability across diverse sectors, including construction, commercial, industrial, and financial…” Source: RevenueBase Database · checked Sep 18, 2026
14	Core Energy Solutions	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	6 contacts →
	Strong evidence “At Core Energy Solutions, we are dedicated to providing clean and sustainable energy solutions to our customers.” Source: RevenueBase Database · checked Sep 18, 2026
15	Voltio	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	11-50	6 contacts →
	Partial evidence “Voltio is a high-precision energy management platform built for the businesses that keep Australia's energy market running, retailers, embedded network operators, and market…” Source: RevenueBase Database · checked Sep 18, 2026
16	Zoom Energy	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	5 contacts →
	Partial evidence “Building on over 10 years of expertise in energy conservation, Zoom Energy delivers energy efficiency outcomes for a vast number of our customers across the residential…” Source: RevenueBase Database · checked Sep 18, 2026
17	Flexigen PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	5 contacts →
	Partial evidence “Flexigen delivers innovative engineering solutions across industrial and manufacturing sectors, specialising in energy efficiency, renewable energy, and process optimisation.” Source: RevenueBase Database · checked Sep 18, 2026
18	Infrafuture	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	5 contacts →
	Partial evidence “We are a specialist in the energy and water sectors across major projects and business operations.” Source: RevenueBase Database · checked Sep 18, 2026
19	70 Ways	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	5 contacts →
	Strong evidence “70 Ways is at the forefront of ushering businesses into a sustainable future, recognizing the complex challenges posed by the evolving landscape of energy, environment, and safety.” Source: RevenueBase Database · checked Sep 18, 2026
20	Verdia	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	51-200	5 contacts →
	Partial evidence “Verdia is an energy services company helping large businesses implement renewable energy and energy efficiency projects that create value, reduce costs and achieve environmental…” Source: RevenueBase Database · checked Sep 18, 2026
21	Kean Energy PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	4 contacts →
	Strong evidence “Kean Energy is a consultancy based in Australia with presence in Philippines and the Fiji Islands.” Source: RevenueBase Database · checked Sep 18, 2026
22	ASV Solar & Battery Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	3 contacts →
	Indirect evidence “ASV Solar was built with the ethos of honesty and quality first in an industry that has been inundated with companies riding the wave of a booming trade.” Source: RevenueBase Database · checked Sep 18, 2026
23	Roland Lawrence Energy	Partial evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	3 contacts →
	Partial evidence “Roland Lawrence Energy (RLE) is a proudly independent provider of high-performance solar and battery systems, delivering tailored energy solutions to homes, builders, and…” Source: RevenueBase Database · checked Sep 18, 2026
24	MIH Sunshine Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	2 contacts →
	Indirect evidence “MIH (Make It Happen) Sunshine Consulting helps SME to Large Corporates navigate the challenges of growth and scalability.” Source: RevenueBase Database · checked Sep 18, 2026
25	Reform Matters	Strong evidence	Sydney, AustraliaHQ checked Sep 18, 2026	1-10	2 contacts →
	Strong evidence “Reform Matters is a consultancy offering comprehensive, practical and accessible regulatory and policy advice and support, with a focus on the energy sector.” Source: RevenueBase Database · checked Sep 18, 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: sustainable energy 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 sustainable energy consultants.
Partial evidence: Its own public description names part of sustainable energy consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable energy 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 25 of 82 sustainable energy consultants based in Sydney, Australia

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Sustainable energy consultants based in Sydney, Australia at a glance

As of Sep 18, 2026

35.6%Verified-email coverage

430.0Average contacts per company

1-10Median size (employees)

142.7%Largest-city concentration · Melbourne

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

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 82 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 sustainable energy 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 Sydney, Australia whose own description of what they do matches “sustainable energy 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 sustainable energy 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 sustainable energy consultants, 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, 12,567 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 18, 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.

Sustainable energy consultants by metro in Australia

Sustainable energy consultants in Melbourne117
Sustainable energy consultants in Sydney82
Sustainable energy consultants in Brisbane54
Sustainable energy consultants in Perth52
Sustainable energy consultants in Adelaide26

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 sustainable energy 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 sustainable energy consultants are there based in Sydney, Australia?

RevenueBase identified 82 sustainable energy consultants 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 sustainable energy consultants?

Melbourne leads with 117 headquartered companies, followed by Sydney (82) and Brisbane (54).

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 12,567 verified decision-maker contacts tracked across these 82 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 18, 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.