Company lists · Data refreshed September 2026

Top 25 Cleantech startups based in Australia

Name: Cleantech startups based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 395 companies tracked

RevenueBase identified 395 cleantech startups headquartered in Australia as of September 2026 and tracks 2,863 professional contacts across them, including 1,059 with verified work emails. Melbourne is the largest hub.

This list covers cleantech startups headquartered in 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 19, 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 19, 2026 86% judged on-target in blind review

395Companies

2,863Contacts tracked

1,059Verified emails

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The 25 largest cleantech startups based in Australia

Ranked by team size

Top 25 of 395 cleantech startups based in Australia, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to cleantech startups: 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	Smart Energy	Indirect evidence	Byron Bay, AustraliaHQ checked Sep 19, 2026	201-500	210 contacts →
	Indirect evidence “Smart Energy was founded to help Australia realise its full solar potential through harnessing our lucky country’s abundance of sun.” Source: RevenueBase Database · checked Sep 19, 2026
2	Clean Energy Finance Corporation	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	51-200	168 contacts →
	Indirect evidence “The CEFC is Australia’s specialist climate investor, helping cut emissions in the race towards net zero by 2050.” Source: RevenueBase Database · checked Sep 19, 2026
3	Windlab	Indirect evidence	Canberra City, AustraliaHQ checked Sep 19, 2026	51-200	94 contacts →
	Indirect evidence “Windlab is Australia’s renewable energy pioneer.” Source: RevenueBase Database · checked Sep 19, 2026
4	Energylab	Partial evidence	Haymarket, AustraliaHQ checked Sep 19, 2026	n/a	69 contacts →
	Partial evidence “EnergyLab is Australia’s leading incubator and accelerator for founders and startups launching and scaling clean energy and climate focused tech and business models.” Source: RevenueBase Database · checked Sep 19, 2026
5	Tranex Solar PTY LTD	Indirect evidence	Sydney Olympic Park, AustraliaHQ checked Sep 19, 2026	201-500	61 contacts →
	Indirect evidence “Tranex Solar Pty Ltd proudly support & promote the construction of renewable energy projects to sustainably power our nation, by partnering with EPC Contractors to deliver highly…” Source: RevenueBase Database · checked Sep 19, 2026
6	Switchdin	Indirect evidence	Newcastle West, AustraliaHQ checked Sep 19, 2026	51-200	49 contacts →
	Indirect evidence “For the past 10 years, we have held the vision of a new energy model, where highly distributed renewable energy assets provide valuable and significant contributions to the safe…” Source: RevenueBase Database · checked Sep 19, 2026
7	MCI Carbon	Indirect evidence	Mayfield West, AustraliaHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “MCi Carbon (MCi) is a world-leading and award-winning Australian clean technology transforming carbon dioxide (CO2) into building products and materials for the circular carbon…” Source: RevenueBase Database · checked Sep 19, 2026
8	Optimal Group	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 19, 2026	11-50	41 contacts →
	Indirect evidence “The Australian energy landscape is undergoing perhaps the biggest shift since electrification began over 140 years ago.” Source: RevenueBase Database · checked Sep 19, 2026
9	MAC Trade Services	Indirect evidence	Rose Park, AustraliaHQ checked Sep 19, 2026	11-50	40 contacts →
	Indirect evidence “In a world that, today, recognises the need to re-evaluate energy use, embrace renewable alternatives, and live more sustainably, MAC Trade Services commit ourselves to building…” Source: RevenueBase Database · checked Sep 19, 2026
10	ITP Renewables	Indirect evidence	Canberra, AustraliaHQ checked Sep 19, 2026	11-50	39 contacts →
	Indirect evidence “ITP Renewables is Australia’s longest-running, independent, renewable energy consultancy.” Source: RevenueBase Database · checked Sep 19, 2026
11	Gentari Australia	Indirect evidence	Manly, AustraliaHQ checked Sep 19, 2026	11-50	35 contacts →
	Indirect evidence “Global clean energy solutions provider Gentari is resolutely committed to doing our part in solving the world’s most pressing sustainable energy needs: to change how we live today…” Source: RevenueBase Database · checked Sep 19, 2026
12	Corporate Carbon	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “Sustainable planet.” Source: RevenueBase Database · checked Sep 19, 2026
13	Renewables Technical Services	Indirect evidence	Bondi Junction, AustraliaHQ checked Sep 19, 2026	51-200	34 contacts →
	Indirect evidence “At RTS, we are dedicated to powering a sustainable future for Australia.” Source: RevenueBase Database · checked Sep 19, 2026
14	Kuga Energy	Indirect evidence	Keysborough, AustraliaHQ checked Sep 19, 2026	51-200	33 contacts →
	Indirect evidence “In a world where rising energy costs and tightening margins are pressuring businesses, Kuga Energy is leading a revolution.” Source: RevenueBase Database · checked Sep 19, 2026
15	Edify Energy	Indirect evidence	Manly, AustraliaHQ checked Sep 19, 2026	11-50	32 contacts →
	Indirect evidence “Edify Energy is an Australian renewable energy development and investment company.” Source: RevenueBase Database · checked Sep 19, 2026
16	Envirogroup	Indirect evidence	Coburg North, AustraliaHQ checked Sep 19, 2026	11-50	30 contacts →
	Indirect evidence “EnviroGroup EnviroGroup is a specialist provider of renewable energy products and systems for commercial applications, government clients and residential home owners.” Source: RevenueBase Database · checked Sep 19, 2026
17	Smart Energy Answers	Indirect evidence	Castle Hill, AustraliaHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence “Smart Energy Answers (SEA) is Australia's leading solar solutions provider.” Source: RevenueBase Database · checked Sep 19, 2026
18	Energy Spurt	Indirect evidence	Adelaide, AustraliaHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “With nearly 50 years of combined experience in the industry, Energy Spurt operates one of the most extensive solar products in Western Australia, Queensland, South Australia, and…” Source: RevenueBase Database · checked Sep 19, 2026
19	Mint Renewables	Indirect evidence	Melbourne, AustraliaHQ checked Sep 19, 2026	11-50	25 contacts →
	Indirect evidence “Mint Renewables aims to be a leading player in a fast and sustainable transition to renewable energy.” Source: RevenueBase Database · checked Sep 19, 2026
20	Iberdrola Australia Smart Energy Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	51-200	21 contacts →
	Indirect evidence “In 2021, Autonomous Energy became part of the Iberdrola Australia group.” Source: RevenueBase Database · checked Sep 19, 2026
21	Banpu Energy Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 19, 2026	11-50	20 contacts →
	Indirect evidence “Welcome to Banpu Energy Australia.” Source: RevenueBase Database · checked Sep 19, 2026
22	Green Peak Energy	Indirect evidence	Melbourne, AustraliaHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Green Peak Energy is an Australian company formed in early 2017 with a passion for renewable energy.” Source: RevenueBase Database · checked Sep 19, 2026
23	Lenergy	Indirect evidence	Moss Vale, AustraliaHQ checked Sep 19, 2026	11-50	19 contacts →
	Indirect evidence “Lenergy is a leading provider of sustainable energy solutions, dedicated to helping homeowners reduce their electricity costs while embracing clean, renewable energy.” Source: RevenueBase Database · checked Sep 19, 2026
24	Ecosaver Australia	Indirect evidence	Derrimut, AustraliaHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Ecosaver is an Australian owned and operated company established in 2017.” Source: RevenueBase Database · checked Sep 19, 2026
25	Kite Magnetics	Strong evidence	Clayton, AustraliaHQ checked Sep 19, 2026	11-50	18 contacts →
	Strong evidence “Kite Magnetics is a pioneering B2B cleantech startup that has developed Aeroperm™, an advanced materials technology developed at Monash University in Melbourne, Australia.” Source: RevenueBase Database · checked Sep 19, 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: cleantech startups. 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 cleantech startups.
Partial evidence: Its own public description names part of cleantech startups, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cleantech startups. 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 395 cleantech startups based in Australia

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Cleantech startups based in Australia at a glance

As of Sep 19, 2026

37.0%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

15.2%Largest-city concentration · Melbourne

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

229

11-50

137

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 395 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 cleantech startups, 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 Australia whose own description of what they do matches “cleantech startups”. 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 cleantech startups), 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 cleantech startups, and records with no verified work email. Companies headquartered outside Australia 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, 1,059 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 19, 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.

Cleantech startups by metro

Cleantech startups in Melbourne60
Cleantech startups in Sydney54

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 cleantech startups, 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 cleantech startups are there based in Australia?

RevenueBase identified 395 cleantech startups headquartered in 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?

Smart Energy, headquartered in Byron Bay, tops this list with the largest team on record.

Which city has the most cleantech startups?

Melbourne leads with 60 headquartered companies, followed by Sydney (54) and Brisbane (18).

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 1,059 verified decision-maker contacts tracked across these 395 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 19, 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.