Top 14 Green Energy startups in Sydney

Oct 02, 2026
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1
Aquila Space Technologies
Funding: $5.2M
Aquila is building wireless energy networks that use lasers to transmit power as infrared light. Its laser power-beaming system sends energy as infrared light from a ground-based transmitter to a specialised photovoltaic receiver, which captures the beam and converts it back into electricity. The broader goal is to create a wireless layer of energy infrastructure that can reach places traditional grids, cables and batteries struggle to serve, whether that is a drone in flight, a satellite in orbit or infrastructure in a remote location.
2
Brighte
Funding: $306.5M
Brighte is a digital credit platform for financing home energy improvements.
3
National Renewable Network
Funding: A$78.2M
The National Renewable Network is a linked network of solar and storage systems that transforms the way energy is supplied.
4
HB11 Energy
Funding: $22M
HB11 Energy is developing Laser Hydrogen Boron-11 fusion to provide a new source of unlimited, clean, safe and reliable energy. It intends to generate electricity using laser-ignited non-thermal fusion. The company deployed a nanosecond and picosecond two-pulse laser system to achieve Fast Ignition. Focused energy accelerates protons and initiates fusion within a compressed fuel pellet. Hydrogen-Boron fuel pellets are injected and burned at a rate of about 1 per second. The energy released drives a conventional steam cycle generator.
5
Upstream Energy
Funding: $20M
Upstream specializes in storing solar energy for various businesses
6
Solar Analytics
Funding: $13.7M
Solar monitoring company that maximises the value home owners get from their solar power system
7
Okra Solar
Funding: $14.1M
Okra Solar is a modular energy startup that’s aiming to bring power to homes in rural areas via a plug-and-play solution that energy companies can easily deploy. The solution uses distributed energy technology that can bring micro-grids to rural communities via interconnected systems of solar panels and batteries.
8
ARC Ento Tech
Funding: $5M
ARC Ento Tech has developed the patent-pending ARC Process technology, which transforms waste into sustainable products including food, fuel and industrial materials.
9
Wattcost
Funding: A$1.8M
Wattcost brings homes to life by unlocking the intelligent voice in household appliances and solar systems.
10
Wattblock
Funding: $1.2M
Wattblock provides quickstart energy reports for residential or commercial strata buildings, without the need for onsite hardware.
11
Fulcrum3D
Funding: A$1.6M
Fulcrum3D develops inventive solutions that add value to wind and solar investment.
12
DeCarice
Funding: A$20K
DeCarice focuses on the practical decarbonisation of diesel assets. Utilising findings from the UNSW Engine Research Laboratory, we're advancing solutions that allow diesel engines to run on up to 90% hydrogen fuel. This transition results in a CO2 emission reduction of over 70%.
13
Powour

Powour helps to tracks, encourages, and incentivizes active transportation activities, minimizing environmental impact .
14
E-Green Electrical

E-Green electrical specialise in helping our customers reduce their carbon footprint and impact on the environment while saving money.
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Editor: Alexander Gillet
Alexander Gillet is a senior editor for EnergyStartups. He has a deep background in energy sector and startups. Alexander graduated from Emlyon Business School, a leading French business school specialized in entrepreneurship. He has helped several non-profit organizations dedicated to promoting environmental education and sustainability and has written over 250 articles on energy technology for various websites. In his free time, Alexander enjoys yoga, camping and exploring the Blue Ridge Mountains. You can contact Alexander at alexgillet(at)energystartups(dot)com