Circular Economy Startups

Solid Oral Care makes plastic-free oral hygiene products, including toothpaste tablets with fluoride, toothpaste in jars, and bamboo toothbrushes, sold directly to consumers with subscription options. Its products are made in New Zealand and aim to reduce toothpaste tube waste sent to landfill.

1 investor

Sonnenerde produces soil products and substrates, including compost and terra preta-style earth, with a focus on natural gardening. The company also publishes content on ecological topics such as urban tree health and city climate adaptation.

1 investor

Sophie's Bionutrients uses bioreactors to grow microalgae-based single-cell protein, producing alternative protein in days using local food waste from breweries, tofu makers, and sugar refineries. Its whole-algae ingredients are used in plant-based meat and functional foods to address food security and sustainable protein supply.

1 investor

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 Bricks is a service that uses AI to sort customers' mixed used LEGO® bricks, identify which sets can be rebuilt, source missing parts, and return cleaned, ready-to-build restored sets. It serves consumer LEGO® enthusiasts in Western Europe (currently Germany and France), with an R&D center in Lithuania.

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 makes acoustic panels and design solutions from eelgrass, a natural carbon-binding material gathered along the Danish coast, for use in building interiors. The products offer acoustic performance and fire classification while storing captured carbon within the material.

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

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

Sparta designs, manufactures, and integrates custom recycling systems and Material Recycling Facilities (MRFs), including facility construction and equipment upgrades. It serves recycling and waste-recovery operators as a consultant and turnkey solution provider.

1 investor

Speira is a European aluminium rolling and recycling company operating eleven production and recycling sites in Germany and Norway, recycling up to 970,000 tons of aluminium and producing around one million tons of rolled products annually. It supplies rolled aluminium products to companies in the automotive, packaging, printing, engineering, and building and construction sectors.

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

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

Spora discovers and preserves wild mushroom species and uses mycelium-growing technology to produce materials and design products, each shaped by the biological patterns of the organism it originates from. Its output is positioned as unique, nature-derived design pieces and materials.

1 investor

Spotless Water operates a national network of self-service stations dispensing purified (0 TDS) water for uses such as window cleaning, car detailing, and aquariums, available 24/7 on a pay-as-you-go or trade account basis. The company uses proprietary filtration and cloud-based monitoring, with a stated focus on the UK market and reducing water waste.

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 individuals to monetize idle tools and equipment by listing them for local borrowing. The app targets tool owners seeking passive income while promoting waste reduction through equipment sharing within neighborhoods.

1 investor

Biokraft is a Nordic producer of biogas, focused on renewable energy generation, climate-oriented recycling, and certified biofertiliser. It operates in the renewable energy and circular economy sector.

1 investor

Standard Gas develops technology to convert non-recyclable waste into resources rather than sending it to landfill or incineration, aiming to reduce greenhouse gas emissions from waste. The company positions itself in the waste management and climate technology space.

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