Circular Economy Startups

SOPHIM is a family-owned manufacturer of natural cosmetic ingredients derived mainly from olive-based plant resources, including olive-derived squalane, emollients, texturizing agents, oils, butters, and exfoliants. It supplies cosmetic brands and laboratories with ingredients for durable, certifiable (COSMOS, BIO) formulations, using a circular, integrated production model.

1 investor

SOQUIMAT develops bio-based and nanotech additives (marketed as PHENOX) for high-performance protective coatings and paints, offering an alternative to chromate and heavy-metal additives by upcycling industrial waste and by-products. It also produces a coating product, T-COAT, powered by its additives, serving the paint and surface-protection industry.

1 investor

Sort A Brick is a service provider that sorts and organizes used LEGO bricks on behalf of customers. The company operates as an independent service in the secondary LEGO market.

1 investor

Sortile develops technology for textile identification and sortation to increase textile diversion and reduce the amount of textiles sent to landfill. It serves the textile recycling and waste management industry.

1 investor

Søuld produces acoustic building materials made from eelgrass harvested along the Danish coast, offering panels and boards designed for wall and ceiling installation to improve interior acoustics. The company serves architects, designers, and builders seeking sustainable, circular acoustic solutions for commercial and residential interiors.

1 investor

Sovena is an agricultural company focused on sustainable food production from farm to table with emphasis on environmental responsibility and waste reduction.

1 investor

Sovereign Materials is a materials and chemical engineering company focused on purification and advanced materials development, led by a team with backgrounds in chemical engineering and climate/earth science research.

1 investor

Spantech International manufactures custom modular buildings for industries including live entertainment, soundstages, industrial warehousing, aviation, and sports, offering an integrated engineering, production, and installation service. The company emphasizes sustainable, circular construction using demountable, reusable structures and recycled aluminum, operating factories in Germany, Poland, and the UAE.

1 investor

A recycling technology provider that offers equipment and services to help organizations recover recyclables and repurpose biodegradable materials. The company provides custom engineering, installation, training, and long-term maintenance support for waste processing operations.

1 investor

Spearstone Solutions uses a patented process to convert industrial waste such as phosphogypsum, FGD gypsum, and coal ash into saleable products including calcium carbonate, ammonium sulfate, and quicklime for the paper, plastics, fertilizer, and metallurgy industries. The company also extracts rare earth elements from these waste streams and captures CO2, serving U.S. industrial and agricultural markets while reducing environmental and health risks.

1 investor

Speira redefines rolling and recycling aluminium to create innovative products and solutions that foster circularity for sustainability. The company aims to deliver high-quality, low-carbon products through best-in-class rolling and recycling capabilities.

1 investor

Sphere is a European packaging manufacturer that produces household and commercial packaging solutions, including biobased and compostable materials for films and bags. The company serves retailers, professionals, and local communities across Western Europe and beyond.

1 investor

Spiber develops next-generation biomaterials based on structural protein technology, producing polymers through fermentation for applications across lifestyle, beauty, food, and healthcare products. The Japanese company operates a production plant in Thailand and a materials sales branch in Europe.

1 investor

Spin Ventures is a venture capital firm that invests in and accelerates early-stage companies advancing the shift from a linear to a circular economy within the consumer and retail sectors. It pairs capital with growth support through its House of Circularity platform, which connects startups, corporations, and investors to pilot and scale circular solutions.

1 investor

Spolia Design Oy is a specialist organization focused on the reuse of materials from demolished buildings, designing cleantech construction projects and providing comprehensive circular economy services for the construction industry.

1 investor

Spoontainable produces edible and sustainable single-use tableware such as spoons, straws, plates, cups, and bowls as alternatives to plastic and PLA products, marketed to food-service businesses like ice cream parlors and restaurants. It is a wholly owned subsidiary of Stroodles Limited.

1 investor

Spring Copenhagen produces decorative wooden figurines and home décor items, including Polly, a handcrafted panda sculpture made from FSC-certified wood.

1 investor

Sprout offers the SmartERP platform, a system of record for enterprise IT asset lifecycle management, tracking assets, vendors, and lifecycle stages for real-time visibility. It provides tamper-evident documentation, ESG and audit reporting, and circularity metrics for reuse and resale, moving organizations beyond reactive ITAD.

1 investor

Sqaner is a peer-to-peer rental platform that enables households and businesses to borrow and lend tools and equipment, reducing waste and creating income opportunities for tool owners. The platform operates in Adelaide and aims to support local communities through shared access to resources while advancing circular economy practices.

1 investor

St1 Biokraft produces biomethane from biogas across the Nordic region, serving heavy transportation, maritime, and industrial customers. The company manages the entire value chain from feedstock sourcing through distribution, operating 12 biogas production plants and a logistics network.

1 investor

St3ms develops performance yarns and textiles made from banana plant pseudostem fibers, offered as a microplastic-free, natural alternative to cotton-poly blends. It supplies these materials to consumer brands in performance wear, home textiles, and footwear, and its yarns are designed to run on traditional short-staple spinning lines.

1 investor

Standard Gas develops the SG100 technology, a waste-processing system that generates renewable power and heat while capturing carbon through biochar production, serving industrial energy consumers and organizations seeking decarbonization solutions. The company addresses emissions reduction across heavy industries, transport, and waste management by converting non-recyclable waste into clean energy alternatives to fossil fuels.

1 investor

Star Waste Systems provides residential curbside trash and recycling collection, including scheduled household waste pickup, recycling programs, and special collections for bulky items. It serves homeowners and municipalities with waste management services.

1 investor

Starlight Software Solutions provides cloud-based management software for waste haulers, recyclers, and facility operators, with solutions for roll-off, commercial, residential, portable toilet, facility management, and recycling business lines. The platform handles route, driver, inventory, and metrics management, and serves customers across North America.

1 investor