Circular Economy Startups

Cannabie produces sustainable cotton and hemp blend t-shirts designed for everyday wear with a lower carbon footprint. The company focuses on eco-conscious apparel for consumers seeking durable, comfortable clothing made from natural and sustainable materials.

1 investor

Canpac is a paper-based packaging manufacturer operating multiple facilities across India, offering corrugated boxes, flexible laminates, luxury boxes, paper bags, folding cartons, and blister backer cards. The company focuses on sustainable, recyclable packaging solutions for consumer brands seeking eco-conscious alternatives to plastic.

1 investor

Captoplastic develops microplastic control and capture products, and offers technology licensing and joint development services to address microplastic pollution. The company serves clients looking to implement microplastic mitigation solutions in various markets.

1 investor

Carboganic produces functional biocarbon masterbatches and concentrates that are added to thermoplastics to improve properties such as weight, stiffness, thermostability, fire retardance, UV stability, and CO₂ footprint. It operates an in-house masterbatch production plant and compounding line and co-develops customized material formulations with clients in the plastics and polymer industry.

1 investor

Carbonlites processes wet waste diverted from landfills to capture methane and produce compressed biogas (CBG) and organic fertilizer. It aims to reduce fossil fuel dependence and improve soil health in India.

1 investor

Carbon Matter is a climate technology company that captures CO₂ from industrial flue gases and combines it with industrial waste and side streams to manufacture higher-value materials. It offers end-to-end project delivery to heavy industry operators and utilities, from waste testing and process development to pilot plant manufacturing and commissioning.

1 investor

CarbonFree operates industrial-scale carbon mineralization facilities that capture CO2 from industrial processes and convert it into carbon-negative products. The company serves industrial manufacturers and chemical buyers seeking sustainable production and carbon reduction solutions.

1 investor

Carbonsate develops biomass storage projects that convert woody waste into permanent, independently verified carbon removal designed to endure for centuries. The company serves organizations and entities seeking to achieve measurable climate impact through nature-based solutions.

1 investor

Revora Materials operates a technology platform that recovers critical minerals such as magnesium, nickel, manganese, platinum group metals, and rare earth elements from industrial byproducts and ores, including mine tailings, slag, and cement-making residues. The company also converts alkaline feedstocks and CO₂ into construction materials, targeting heavy industry and domestic critical mineral supply chains.</parameter> <parameter name="founders">[{"full_name": "Sravanth", "title": "Co-Founder & CEO"}, {"full_name": "Hassnain", "title": "Co-Founder & Senior Director of Engineering"}, {"full_name": "Greeshma Gadikota", "title": "Co-Founder"}]

1 investor

CarobWay develops clean-label food ingredients derived from carob, using a zero-waste process to turn the crop into products for the food industry. The company positions itself around sustainable, science-backed food solutions.

1 investor

Maya Hueltech manufactures biodegradable utensils and straws made from natural agave fibers for the food service and consumer goods market. The products are designed to be both environmentally sustainable and competitively priced.

1 investor

Casella provides waste management and recycling services designed to be safe and sustainable for customers and communities.

1 investor

Cashew Coast sources and processes cashews directly from farmers in Côte d'Ivoire, with processing facilities located in-country to ensure freshness, traceability, and minimal carbon footprint. The company supplies premium cashew kernels to international food brands and retailers while supporting smallholder farmers through sustainable practices and fair wages.

1 investor

CaSil Technology develops proprietary materials with a smart-release fertiliser for agriculture that matches nutrient availability to plant demand, and also produces metal recovery solutions from industrial and mining waste streams. The CaSil material platform serves applications spanning agriculture, environmental remediation, tire manufacturing, moisture control, and thermal insulation.

1 investor

Castalie is a French company that designs and supplies eco-designed premium water fountains delivering microfiltered still, sparkling, chilled, and hot water for companies, hotels, and restaurants. Its solution replaces single-use plastic bottles, and it operates across France with over 7,000 fountains installed since 2011.

1 investor

Castle's Labs sells branded agricultural and gardening products, including Manure Magic and Plant Magic, marketed to consumers for lawn and plant care.

1 investor

CauliBox provides a reusable food and drink packaging service for workplaces and events, designed to replace single-use disposables in the foodservice industry. The platform uses QR scanning technology to manage a logistics system that reduces packaging waste while simplifying operations for catering partners.

1 investor

Cavitel is a Polish manufacturer of specialized polymer compounds and materials for the plastics processing industry, producing injection compounds, chalk fillers for films, and various processing additives. The company focuses on reducing plastic waste, particularly from fishing nets, and developing environmentally sustainable polymer solutions.

1 investor

Cecilia produces advanced carbon materials derived from plastic waste for industrial applications. The company manufactures carbon nanotubes and recycled polymer composites that enhance performance in aerospace, electronics, and automotive industries while reducing environmental impact.

1 investor

Cemex Ventures is the open innovation and investment unit of Cemex that identifies and supports construction startups addressing decarbonization, circular economy, efficiency, and advanced construction methodologies. The firm invests in and collaborates with early-stage companies while connecting them to investors, customers, and industry experts.

1 investor

CertiDeal sells refurbished iPhones and smartphones that are inspected, tested, and reconditioned in-house in France, with a 30-month warranty and pricing 30-70% below new devices. It targets consumers seeking cheaper, verified secondhand smartphones and provides a buying guide and advice hub.

1 investor

Constantia Flexibles is a manufacturer of flexible packaging and aluminum products serving pharmaceutical, consumer, and film markets. The company operates multiple divisions including pharma, consumer, aluminum, and film.

1 investor

ChainCraft uses non-GMO fermentation and chain elongation technology to upcycle organic food residues into biobased fatty acids, offering an alternative to fossil- and palm oil-based chemicals. Its products serve markets including animal nutrition, chemical derivatives, food and fragrances, and agriculture.

1 investor

CHAKO Zanzibar is a social enterprise that collects glass and plastic waste from hotels, resorts, restaurants, and bars and upcycles it into handcrafted glassware, home décor, terrazzo products, and custom items for consumers and business clients. Based near the Kidichi spice farms in Zanzibar, it also trains local artisans and runs workshop tours and sustainability awareness programs.

1 investor