Best Sustainability Tech Companies in Australia
The 590 best Sustainability Tech companies in Australia in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Symphony.
Ranked by disclosed equity funding and recent momentum, the Sustainability Tech companies in Australia tracked here represent $1.9B in total capital across 590 firms, and not a single unicorn in the mix yet. That number tells you something real: this is a sector still in accumulation mode, building infrastructure before it prints outsized exits. Brighte leads the directory at $207M raised, followed by Amber at $65M and Neara at $62M. Those three alone account for a meaningful share of the pool. The global market these companies are betting into sits at roughly $16.2B today and is forecast to reach $122.7B by 2032, a 23.8% CAGR that I'd argue justifies the capital concentration at the top.
What drives the inflows? EV battery technology and next-generation EV platforms are the hot themes right now, alongside smart grid adoption and the broader push toward low-carbon infrastructure. As shown in 2020 research, green technology adoption patterns tend to cluster around regulatory signals, and Australia's current lack of formal green tech regulation is a structural wildcard you shouldn't ignore. It creates room to move fast, but it also leaves capital exposed. So the question for any filer in this directory is whether momentum alone can substitute for policy clarity. The most active investors here, including Artesian, EnergyLab and the Australian Renewable Energy Agency, are clearly betting it can.
- MarketsandMarkets
Our analysis of 293 Sustainability Tech companies
$38.4b in tracked funding; 83% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Sustainability Tech companies in Australia
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Market signals (1y) | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Symphony Energy transition infrastructure platform 35Moat top 22%Funding top 23%Talent bottom 49%Market bottom 37% All 5 signals ▾Moattop 22% Fundingtop 23% Talentbottom 49% Marketbottom 37% Globalbottom 36% Moat: Editorial + unicorn rating 8/10 · Soonicorn Funding: Raised $300M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 35/100 | $300M | 23 mo ago | — | Steven Butler Founder & CEO | — | — | — | — | 1 partnership |
| 2 | Brighte Provider of payment facility solution in the solar financing segment 67Tech top 16%Funding top 26%Moat top 28%Growth top 35% All 10 signals ▾Techtop 16% Fundingtop 26% Moattop 28% Growthtop 35% Producttop 35% Markettop 46% Talentbottom 49% Fin. healthbottom 48% Newsbottom 46% Globalbottom 37% Tech: 49 technologies across 7/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 Funding: Raised $207M across 8 rounds · 8 rounds over 10 yrs (0.8/yr) rank vs industry peers · Fliar Intelligence Index 67/100 | $207M | 7 mo ago | 125 | Katherine Mcconnell Founder & CEO | SentryReactEmotion+19 | Top 5M | — | — | 1 partnership · 3 awards |
| 3 | Carnegie Clean Energy Provider of CETO wave energy converter and solar PV systems | $118M | 27 mo ago | 22 | — | WordPress Block EditorWordPressMySQL+28 | Top 10M | — | — | 1 internship · 1 partnership |
| 4 | Willow Provider of a SaaS and AI-driven digital twin platform for commercial spaces | $110M | 42 mo ago | 321 | Joshua Ridley Co-Founder | WordPressApple iCloud MailMySQL+24 | Top 10M | — | — | 1 partnership · 1 award |
| 5 | Samsara Eco Developer of enzymatic technology for infinite plastic recycling | $106M | 23 mo ago | 51 | Paul Riley Founder & CEO | ReadymagApple iCloud MailMicrosoft 365+19 | Top 5M | 3 signals ▼25% Capital raise · Announcements · Contracts | 47 patents Industrial enzyme engineering for biocatalysis and sustainable chemical production | 1 launch · 1 award |
| 6 | Vulcan Energy Provider of applications for lithium chemicals and renewable energy solutions | $96M | 24 mo ago | 187 187 → 173 (-7%) | Horst Kreuter Co-Founder and General Representative | WordPressApple iCloud MailMicrosoft 365+20 | Top 5M | 64 signals ▲146% Contracts · Funding · Regulatory | — | 1 partnership |
| 7 | SpeeDx Provider of qPCR-based molecular diagnostics platform | $78M | 39 mo ago | 113 | Alison Todd Co-Founder | WordPressMySQLPHP+41 | Top 5M | 4 signals ▼20% Announcements · Contracts · Capital raise | — | 5 partnerships |
| 8 | Amber Provider of energy solutions for home batteries, solar, and EVs | $65M | 8 mo ago | 87 | Dan Adams Co-Founder & Co-CEO | Webflow EcommerceWebflowApple iCloud Mail+38 | Top 500k | — | — | 1 launch |
| 9 | Neara Developer of physics-enabled digital twin software for utility network management 62Funding top 19%Growth top 35%Tech top 35%News top 37% All 8 signals ▾Fundingtop 19% Growthtop 35% Techtop 35% Newstop 37% Moattop 39% Talentbottom 49% Marketbottom 48% Globalbottom 48% Funding: Raised $61.6M across 5 rounds · 5 rounds over 5 yrs (1.0/yr) Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 62/100 | $62M | 4 mo ago | 71 | Daniel Danilatos Founder & CEO | WordPressMySQLPHP+38 | Top 5M | 5 signals Funding · Capital raise | — | — |
| 10 | Ryzo Carbon farming platform simplifying regenerative agriculture for farmers and project developers 14Talent top 38%Product top 46%Funding top 48%Tech bottom 43% All 6 signals ▾Talenttop 38% Producttop 46% Fundingtop 48% Techbottom 43% Globalbottom 25% Marketbottom 21% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Product: 1 published app · Company stage: Series B rank vs industry peers · Fliar Intelligence Index 14/100 | $50M | 50 mo ago | 9 | Philip Mulvey Co-Founder & CEO | Webflow EcommerceWebflowCloudflare Turnstile+12 | Top 50M | — | — | — |
| 11 | Evolve Housing Provider of affordable homes | $49M | 83 mo ago | 312 | Lyall Gorman CEO | WordPressApple iCloud MailMySQL+34 | Top 5M | — | — | 2 expansions · 1 award |
| 12 | Recce Developer of antibiotics for drug-resistant bacteria and cancer treatments | $41M | 12 mo ago | — | James Graham CEO | WordPressMySQLPHP+26 | Top 50M | — | 8 patents Antimicrobial polymer therapeutics for viral and bacterial infection treatment | 4 partnerships |
| 13 | Raygen Developer of solar power technology and renewable energy storage solutions | $36M | 14 mo ago | 60 | John Lasich Founder & CTO | WordPressMySQLPHP+16 | Top 10M | — | — | — |
| 14 | Hatchtech Developer of proprietary head lice drugs | $31M | 151 mo ago | 4 | — | — | — | — | — | — |
| 15 | Greatcell Solar Developer of perovskite solar cells | $28M | 98 mo ago | 37 | — | — | — | — | — | 1 launch · 1 partnership |
| 16 | CIMET Provider of white-label platform for customer experience management | $27M | 51 mo ago | 80 | Ankit Jain Founder & CEO | Apple iCloud MailMicrosoft 365Node.js+14 | Top 10M | — | — | 1 partnership |
| 17 | Topelia Developer of antiviral triple therapy for coronavirus infection | $25M | 56 mo ago | — | David Fox CEO | — | — | — | — | — |
| 18 | Infravision Provider of a drone stringing system | $23M | 32 mo ago | 74 | Cameron Van Der Berg Co-Founder | WordPressMySQLPHP+23 | Top 10M | 5 signals Funding · Capital raise · Leadership | — | 1 job opening · 3 expansions |
| 19 | MGA Thermal Provider of solutions for thermal energy storage | $21M | 3 mo ago | 27 | Erich Kisi Co-Founder & CEO | Cart FunctionalitySquarespace CommerceSquarespace+18 | Top 10M | — | 10 patents Thermal energy storage using inverse microstructure alloy materials | — |
| 20 | Power Ledger Online platform offering energy trading solutions | $19M | 48 mo ago | 46 | John Bulich Co-Founder | WordPress Block EditorElementorWordPress+39 | Top 5M | — | — | — |
| 21 | GPN Vaccines Developer of a vaccine against Streptococcus pneumonia | $18M | 5 mo ago | 24 | — | WordPressMySQLPHP+13 | Top 50M | — | 21 patents Streptococcal vaccine composition, formulation, and immunogenic protein engineering | — |
| 22 | Evergen Provider of decentralized renewable energy management solutions | $17M | 47 mo ago | 72 | — | WordPressApple iCloud MailGoogle Workspace+33 | Top 10M | — | — | 1 partnership |
| 23 | Envirosuite Developer of software for monitoring and predicting environmental impact events | $14M | 21 mo ago | 254 | — | StatamicPHPLaravel+22 | Top 10M | — | — | — |
| 24 | Pathzero Provider of solutions to calculate carbon emission | $12M | 42 mo ago | 50 | Charbel Ayoub Co-Founder & CTO | — | — | — | — | — |
| 25 | Licella Provider of patented hydrothermal liquefaction technology | $12M | 11 mo ago | 34 | — | WordPressMySQLPHP+19 | Top 10M | — | — | — |
| 26 | Jupiter Ionics Provider of green ammonia | $11M | 27 mo ago | 7 | Douglas Macfarlane Founder | WordPressMySQLPHP+9 | Top 50M | — | — | — |
| 27 | BiomeBank Developer of microbial therapies to treat diseases | $11M | 42 mo ago | 22 | Sam Costello Co-Founder & CEO | Cart FunctionalityWordPressApple iCloud Mail+29 | Top 50M | — | — | 1 partnership |
| 28 | Okra Solar P2P Solar power sharing platform | $10M | 33 mo ago | 31 | Afnan Hannan Co-Founder & Software Engineer | WebflowGSAPAmazon Web Services+10 | Top 10M | — | — | 1 launch · 1 partnership |
| 29 | CIM SaaS & AI-driven building analytics platform for commercial properties | $10M | 44 mo ago | 82 | David Walsh Founder & CEO | WebflowGSAPMicrosoft Clarity+21 | Top 5M | — | — | 3 launchs · 2 partnerships |
| 30 | FLINTpro Provider of solutions to calculate carbon emissions | $9M | 37 mo ago | 32 | Rob Waterworth CEO | — | — | — | — | — |
| 31 | Island Pharmaceuticals Developer of antiviral therapeutics for infectious diseases | $7M | 4 mo ago | — | David Foster Chief Executive Officer and Managing Director | ZURB FoundationMicrosoft ASP.NETCloudflare+13 | Top 50M | — | 2 patents Antiviral drug formulations targeting SARS‑CoV‑2 and polymerase inhibition. | — |
| 32 | Green Gravity Developer of gravitational energy storage systems using disused mine shafts | $7M | 20 mo ago | 10 | — | WordPressMySQLPHP+15 | Top 10M | — | 3 patents Gravity‑based energy storage systems for renewable power generation | 1 award |
| 33 | Sumday Software-based platform for reducing business carbon emissions | $7M | 26 mo ago | 16 | Jessica Richmond Co - Founder & CEO | WordPressMySQLPHP+15 | Top 10M | — | — | 1 launch · 1 partnership |
| 34 | VAPAR Developer of ML based platform for assessing the condition of sewer pipes | $7M | 28 mo ago | 20 | — | WordPressMySQLPHP+27 | Top 10M | — | — | 1 job opening · 3 partnerships |
| 35 | KC8 Capture Technologies Developer of affordable and sustainable carbon capture technology. | $7M | 23 mo ago | 9 | Barry Hooper Founder | WordPressMySQLPHP+10 | Top 50M | — | 15 patents Patents concentrated in transport & manufacturing processes | — |
| 36 | EcoDetection Provider of real-time water quality monitoring systems and data analysis | $7M | 23 mo ago | 7 | Jefferson Harcourt Founder | WordPress Block EditorWordPress Site EditorWordPress+14 | Top 50M | — | — | 1 expansion |
| 37 | Senseand Software platform for aggregating data from farm fields and data analytics | $6M | 35 mo ago | 18 | Peter Moulton Co-founder & CEO | — | — | — | — | — |
| 38 | MCi Carbon Provider of carbon capture and utility solutions | $5M | 16 mo ago | — | Geoff Brent Co-Founder & Chief Scientist | WordPressMySQLPHP+26 | Top 10M | — | — | — |
| 39 | Avarni Cloud-based platform to offset and manage carbon emissions | $5M | 30 mo ago | 21 | Anuj Paudel Co-Founder and Co-CEO | — | — | — | — | 1 launch |
| 40 | Gridsight Developer of an AI-driven electrical digital twin for distribution networks 40AI top 30%Talent top 38%Growth top 45%Funding top 49% All 7 signals ▾AItop 30% Talenttop 38% Growthtop 45% Fundingtop 49% Techbottom 42% Globalbottom 37% Marketbottom 26% AI: Classified as an AI company · Product described with: ai-driven Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 40/100 | $5M | 14 mo ago | 17 | Kurt Walkom Co-Founder & Chief Commercial Officer | WebflowApple iCloud MailGoogle Workspace+13 | Top 10M | — | — | 1 partnership |
| 41 | Bluglass Manufacturer of custom GaN laser diodes and LEDs | $4M | 28 mo ago | 8 | Jim Haden CEO | WordPressMySQLPHP+8 | Top 10M | — | — | — |
| 42 | Umps Provider of smart plugs to monitor elders at home 37Tech top 33%Growth top 35%Talent bottom 49%Product bottom 48% All 7 signals ▾Techtop 33% Growthtop 35% Talentbottom 49% Productbottom 48% Fundingbottom 41% Marketbottom 30% Globalbottom 29% Tech: 38 technologies across 4/8 capability areas · Cloud: Amazon Ses, Amazon Web Services Growth: Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 37/100 | $4M | 18 mo ago | 22 | Adam Jahnke CEO | Webflow EcommerceCart FunctionalityWebflow+26 | Top 10M | — | — | — |
| 43 | SwitchDin Offers solar energy monitoring systems | $3M | 8 mo ago | 39 | Andrew Mears Founder & CEO | SentryZendeskApple iCloud Mail+18 | Top 10M | — | — | 1 job opening |
| 44 | Baymatob AI-based health risk analysis tool for healthcare professionals | $3M | 28 mo ago | 22 | Tara Croft CEO | — | — | — | — | — |
| 45 | Orkestra Provider of financial analysis and management software for commercial solar projects | $3M | 18 mo ago | 14 | Chris Cooper Co-CEO & co-founder | SentryCannyZendesk+22 | Top 5M | — | — | — |
| 46 | 1Breadcrumb Provider of construction safety and productivity software for jobsite management | $3M | 23 mo ago | 11 | — | WordPressApple iCloud MailGoogle Workspace+36 | Top 5M | — | — | 1 partnership |
| 47 | RecycleSmart Provider of waste collection solution | $2M | 11 mo ago | 15 | Marco Galletti CTO and Co-Founder | Cart FunctionalitySquarespace CommerceSquarespace+29 | Top 5M | — | — | 1 job opening · 1 partnership · 1 expansion |
| 48 | Trace Provider of solutions to offset carbon footprint | $2M | 28 mo ago | 15 | Joanna Auburn Co-Founder | Webflow EcommerceWebflowReact+34 | Top 10M | — | — | — |
| 49 | Fugu Provider of carbon capture solution | $1M | 23 mo ago | — | Mac Thompson Co-Founder | — | — | — | — | 1 expansion |
| 50 | Algenie Provider of technology for algae production 14Talent top 28%Tech bottom 41%Funding bottom 36%Market bottom 25% All 5 signals ▾Talenttop 28% Techbottom 41% Fundingbottom 36% Marketbottom 25% Globalbottom 25% Talent: 3 named leaders on record · 3 C-suite/founder profiles curated Tech: 10 technologies across 3/8 capability areas · Cloud: Cloudflare rank vs industry peers · Fliar Intelligence Index 14/100 | $1M | 21 mo ago | — | Mathieu Pernice Co-Founder | Framer SitesReactCloudflare+7 | Top 50M | — | — | 1 job opening |
Top 12 Sustainability Tech companies in Australia
#1
Series C · Sydney, New South Wales · founded 2015 · 125 employees$206.5Mraised▾
Brighte provides payment facility solutions in the solar financing segment. It works on credit analysis and customer payables which follow solar financing and provides consumers with affordable payment plans to pay for solar and smart home technology with 'zero interest'. It provides zero-interest loans and variable repayment terms to customers for buying a product from one of the empanelled vendors by granting instant loan decisions. Its marketplace includes solar systems, flooring, roofing, pool heating system, guttering, etc.
- Nov 2025Grant (prize money)$26M
- Dec 2020Series C$100M
- Oct 2019Series B$10.6M
- Jul 2019Conventional Debt$130M
#2
Series D · Sydney, New South Wales · founded 2016 · 71 employees$61.6Mraised▾
Developer of physics-enabled digital twin software for utility network management. The software simulates network behavior under various conditions, such as severe weather and design changes. It identifies vulnerabilities and validates potential remediation solutions. The software also generates reports to quantify network needs and measure outcomes.
- Feb 2026Series D$63.5M
- Oct 2024Series C$31M
- Sep 2023Series B$10M
- May 2022Series B$14M
#3
Series A · Newcastle, New South Wales · founded 2019 · 27 employees$20.9Mraised▾
Provider of solutions for thermal energy storage. In its system, modular blocks are stacked into insulated storage tanks, which can store energy for use in many applications. By storing excess thermal energy, It helps to ensure a stable supply of electricity to the grid, effectively enabling base load power generation.
- Mar 2026Series A$12.1M
- Feb 2026Grant (prize money)$2.3M
- Dec 2024Series A$14.1M
- Apr 2024Seed$5.7M
#4
Series D · Melbourne, Victoria · founded 2017 · 87 employees$65Mraised▾
Provider of energy solutions for home batteries, solar, and EVs. It offers tools to manage energy consumption, including battery automation technology. The company provides access to wholesale electricity prices and feed-in rates. It also offers resources such as solar and battery calculators, compatibility checks, and expert consultations.
- Oct 2025Series D$10M
- Jun 2025Series D$29M
- Feb 2024Series C$19.1M
- Oct 2022Series B$13.4M
#5
Series B · Canberra, Australian Capital Territory · founded 2017 · 24 employees$18Mraised▾
Developer of a vaccine against Streptococcus pneumonia. The vaccine Gamma-PN is a whole-cell vaccine that is capable of inducing broad-spectrum T- and B-cell immunity. This is developed by using a gamma-irradiation process that inactivates and kills the vaccine strain but surface protein antigens are conserved and maintained during vaccine production that provides immunity.
- Dec 2025Series B$3.5M
- Jun 2024Series B$18M
#6
Public · Camberwell, Victoria · founded 2016$7.5Mraised▾
Developer of antiviral therapeutics for infectious diseases. The lead drug candidate ISLA-101 is repurposed for the prevention and treatment of dengue fever and other mosquito-borne diseases. It prevents nuclear entry of the viral protein that prevents propagation of the viral infection.
- Feb 2026Post IPO$6.3M
- Mar 2024Post IPO$1.2M
#7
Public · Sydney, New South Wales · founded 2007$40.8Mraised▾
Developer of antibiotics for drug-resistant bacteria and cancer treatments. The company's pipeline includes RECCE 327 (R327) as an intravenous and topical therapy that is being developed for the treatment of serious and potentially life-threatening infections due to Gram-positive and Gram-negative bacteria, including their superbug forms; RECCE 435 (R435) as an orally administered therapy for bacterial infections; and RECCE 529 (R529) for viral infections.
- Jun 2025Post IPO$4.8M
- Apr 2025Post IPO$10.1M
- Sep 2020Post IPO$20.1M
- Oct 2019Post IPO$4.6M
#8
Series A · Sydney, New South Wales · founded 2024$300Mraised▾
Energy transition infrastructure platform. It orchestrates on the ground expertise with institutional capital markets to accelerate the transition.
- Jul 2024Series A$202M
- Jul 2024Conventional Debt$126.6M
#9
Series D · Hawthorn East, Victoria · founded 2005 · 60 employees$35.7Mraised▾
Developer of solar power technology and renewable energy storage solutions. Its system concentrates sunlight onto solar modules, capturing heat for on-demand electricity dispatch. The company's power plants generate, store, and deliver electricity at a low cost. The company's solution uses recyclable, locally sourced materials, enabling project lifespans.
- Apr 2025Series D$76.7M
- Apr 2024Series D$32.7M
- 2021Series C—
- Mar 2020PE$3M
#10
Seed · Sydney, New South Wales · founded 2005 · 34 employees$11.5Mraised▾
Provider of patented hydrothermal liquefaction technology. It delivers low-carbon solutions through its advanced technology, enabling the sustainable transformation of waste feedstocks into biofuels, biochemicals, and recycled materials. Its patented technology, the Catalytic Hydrothermal Reactor (Cat-HTR), offers a game-changing approach to waste conversion. Licella partners with industry leaders to develop innovative solutions for a lower carbon future.
- Jul 2025Seed—
- Feb 2025Grant (prize money)$8M
- Aug 2023Seed—
- May 2022Grant (prize money)$3.5M
#11
Series A · Queanbeyan, New South Wales · founded 2021 · 51 employees$105.6Mraised▾
Developer of enzymatic technology for infinite plastic recycling. This technology enables the re-manufacture of new plastics from waste plastics repeatedly, creating a truly circular system. The process uses recycled materials exclusively, eliminating the need for virgin plastics and reducing reliance on fossil fuels. The resulting recycled plastics maintain virgin-quality characteristics, suitable for various industries. The technology features a low carbon footprint and avoids high-temperature processes, minimizing environmental impact.
- Jun 2024Series A$65M
- Jul 2023Series A—
- May 2023Series A—
- Nov 2022Series A$34.6M
#12
Series A · Newcastle, New South Wales · founded 2014 · 39 employees$3.5Mraised▾
SwitchDin offers smart monitoring solutions for solar energy generation systems with battery backups. Offers solutions for monitoring, forecasting, controlling the energy consumption and generation etc., and also offers energy optimisation, demand management for solar-powered battery systems. Have developed monitoring systems named "Stormcloud" and "DROPLET" which integrates with data communications systems for smooth run of the PV system.
- Sep 2025Series A$10M
- Jun 2020Series A$3.5M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Sustainability Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Climate Adaptation is moving in Australia
A read on the academic research around Climate Adaptation — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 597 Australia-affiliated papers.
- University College London46
- Newcastle University39
- Australian National University31
- Griffith University31
- The University of Melbourne30
- Climate change2→17
- Resilience (materials science)2→7
- Climate change11→63
- Flood myth12→48
- Resilience (materials science)3→25
- Psychological resilience6→18
- Climate risk3→13
- Climate change32→152
- Resilience (materials science)4→43
- Flood myth11→34
- Climate risk7→28
- Psychological resilience6→26
Where climate adaptation is researched across Australia
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.