Sydney — As Australia intensifies its push toward net-zero emissions and circular economy practices in 2026, a growing number of businesses are setting benchmarks for environmental responsibility. From innovative startups tackling waste and energy challenges to established firms embedding sustainability into core operations, these companies demonstrate that profitability and planetary health can align.

Recent reports, including the Corporate Knights Global 100 ranking and World Benchmarking Alliance assessments, highlight Australian leaders in areas like waste management, renewable energy and low-impact manufacturing. B Corp certification, now held by over 740 companies across Australia and New Zealand, provides a rigorous measure of social and environmental performance. Here are 10 standout eco-friendly companies making significant impacts in 2026.

Brambles Ltd
Brambles Ltd
  1. Brambles Ltd The global supply-chain solutions provider, headquartered in Sydney, ranks among the world's most sustainable corporations in the 2026 Corporate Knights Global 100. Brambles, parent of CHEP pallet pooling, excels in circular economy models that reuse and recycle wooden pallets, reducing deforestation and waste. Its near-perfect scores in sustainability metrics reflect strong governance, low emissions intensity and resource efficiency, positioning it as a leader in sustainable logistics.
  2. Sims Ltd A Melbourne-based recycling giant, Sims secured a high placement in the 2026 Global 100 for its waste management expertise. The company processes millions of tons of metal, electronics and other materials annually, diverting waste from landfills and recovering valuable resources. Sims' focus on circularity, emissions reduction and ethical sourcing earns it consistent A- ratings, making it a cornerstone of Australia's resource recovery sector.
  3. Hysata This Wollongong startup is pioneering green hydrogen production with capillary-fed electrolyser technology that promises higher efficiency and lower costs than traditional methods. Recognized among top sustainability innovators, Hysata's advancements support Australia's hydrogen export ambitions and domestic decarbonization, attracting significant investment and positioning the company as a frontrunner in clean energy transition.
  4. Bygen Based in Adelaide, Bygen transforms agricultural waste like nut shells into high-value activated carbon for water filtration and air purification. The process sequesters carbon while addressing pollution, exemplifying innovative waste-to-resource solutions. As a highlighted sustainability startup, Bygen contributes to reducing industrial emissions and promoting bio-based materials in 2026.
  5. Gaia EnviroTech Operating from Victoria, Gaia converts organic waste into renewable energy and bio-fertilizers through advanced anaerobic digestion. Its systems help businesses manage food and agricultural waste sustainably, cutting methane emissions and generating clean biogas. The company's waste-to-energy approach aligns with national circular economy goals and supports local decarbonization efforts.
  6. Yume This Melbourne-based platform combats food waste by connecting surplus food from manufacturers and retailers to charities and businesses. Yume's digital marketplace has redistributed millions of meals, reducing landfill contributions and addressing food insecurity. Its scalable model earns praise as a practical solution to one of Australia's major environmental and social challenges.
  7. Who Gives A Crap The toilet paper company, founded in Melbourne, uses 100% recycled or bamboo materials and donates 50% of profits to sanitation projects. Certified B Corp status underscores its commitment to ethical sourcing, plastic-free packaging and carbon-neutral operations. In 2026, it continues expanding sustainable consumer goods while supporting global hygiene initiatives.
  8. Returnr A reusable packaging pioneer, Returnr offers deposit-return systems for food containers and coffee cups, eliminating single-use plastics in cafes and events. The company's closed-loop model reduces waste and encourages consumer behavior change. Featured in sustainability roundups, Returnr exemplifies practical steps toward a zero-waste economy.
  9. Australian Ethical Investment As one of Australia's first publicly listed B Corps, this Canberra-based firm manages funds focused exclusively on positive-impact investments. It avoids fossil fuels and prioritizes renewables, ethical labor and environmental stewardship. Its influence shapes capital flows toward sustainable projects, amplifying eco-friendly business growth nationwide.
  10. Outland Denim The Queensland fashion brand produces sustainable jeans using eco-friendly materials and fair labor practices. Certified B Corp, Outland emphasizes low-water denim production and ethical supply chains. Its "cycle of freedom" mission combines environmental care with social impact, inspiring sustainable fashion in Australia.

These companies reflect broader trends in 2026: stronger governance linking executive pay to sustainability targets, rising climate transition planning and innovation in green technologies. While mining and energy sectors face scrutiny, leaders like Brambles and Sims show resource-intensive industries can achieve high sustainability standards. Startups such as Hysata and Bygen drive breakthroughs in clean energy and waste valorization.

Government policies, including enhanced emissions reporting and incentives for renewables, support this momentum. Investor expectations and regulatory pressure push more firms toward credible action. As Australia navigates its nature-dependent economy, these eco-friendly trailblazers offer models for balancing growth with environmental stewardship.