Circular Economy Startups

6K Additive manufactures metal powders — including titanium, nickel, and refractory alloys such as tungsten, C-103, tantalum, and molybdenum — using its proprietary UniMelt process and sustainable feedstock. It supplies powders for aerospace, defense, medical, and industrial additive manufacturing, serving government agencies and Tier-1 suppliers seeking a domestic supply chain for critical materials.

1 investor

7 Leagues is a woman-owned tannery and wholesale manufacturer of fish leather made from rescued fish skins and plant-based compounds, using chrome-free, plastic-free processing. It supplies durable, natural leather to the fashion and luxury goods industry as a sustainable alternative to conventional chromium-tanned leather.

1 investor

7 Steel Nordic produces low-carbon, circular reinforcing steel by recycling steel scrap, manufacturing products such as billets, reinforcing steel, and wire rods. It supplies these products to sectors including construction, energy, shipping, and rail in the Nordic region.

1 investor

900.care sells sustainable personal care and home cleaning products—such as shower gel and household cleaners—made in France with natural-origin ingredients and no single-use plastic waste. It operates as a direct-to-consumer eco-friendly brand offering product packs for building a low-waste routine.

1 investor

99 Dresses is an online marketplace for buying and selling secondhand women's clothing and fashion items. The platform connects individual sellers and buyers in a peer-to-peer ecommerce model focused on circular fashion.

1 investor

ABL-TECHNIC Group provides professional industrial paint stripping (decoating) services for coated workpieces and components, using chemical, thermal, and mechanical methods. It operates as a full-service supplier covering stripping, repair, logistics, and disposal for manufacturing clients worldwide.

1 investor

Abolis is a biotech company specializing in microbial engineering and fermentation technologies to develop bio-based products including functional ingredients and chemicals. The company provides end-to-end solutions for industrial-scale bioprocess development to biotech and manufacturing partners seeking to innovate sustainably.

1 investor

ACBC Group is a boutique consulting firm offering advisory services, R&D, strategy consulting, supply chain, and marketing services for brands in the fashion, luxury, and lifestyle industries. It focuses on sustainable material research, product innovation, and circular end-of-life solutions.

1 investor

ACE Green Recycling operates a battery recycling technology platform that uses electrified, hydrometallurgical processes to recover materials from lead, LFP, NMC and LTO batteries for electronics, automotive and energy storage industries. It deploys modular recycling plants and licenses its technology to recyclers, refineries, battery OEMs and other partners, with a focus on building domestic battery material supply in the U.S. and greenfield joint ventures internationally.</parameter> <parameter name="founders">[]

1 investor

Action Environmental Services is a commercial waste hauler providing garbage collection, dumpster rental, recycling, and disposal services to businesses, construction firms, and institutions across New York City's five boroughs. It operates recycling facilities, an organics recycling program, and a waste-by-rail network, and is an authorized carter under NYC's Commercial Waste Zone program.

1 investor

ADN France redistributes unsold products and surplus stock donated by companies to partner associations that help people in situations of poverty. The organization connects businesses with charities to reduce waste while providing concrete aid to those in need in France.

1 investor

ADRITEM is a regional development association operating in the Terras de Santa Maria area of Portugal. It supports the promotion of local resources, crafts, the green economy, and the development of new business projects across urban and rural communities.

1 investor

Äerd Lab is a design studio that uses 3D printing to produce clay bricks, decorative elements, and everyday objects from bio-based earthen material. It sells locally crafted 3D-printed products online and applies the technology to architectural and building applications.

1 investor

AeroFlexx develops a liquid packaging technology, the AeroFlexx Pak, that combines attributes of flexible and rigid packaging with features like 360-degree artwork, easy tear, and a self-sealing valve, while using less plastic. It serves consumer brands across categories including personal care, household products, food, pet care, and industrial.

1 investor

Aeropowder engineers high-performance insulation materials from feathers using a patent-pending process. The company's first product is PluumoPlus, a thermal packaging material for life science and pharmaceutical cold chain deliveries that replaces expanded polystyrene.

1 investor

aevoloop develops fully recyclable, bio-based and biodegradable polymers with heteroatom-based breaking points that enable low-energy chemical recycling into reusable building blocks. The Leipzig-based chemistry startup targets the plastics and materials industry, aiming to replace conventional plastics without compromising performance.

1 investor

Afineur uses biological processes to manufacture food products sustainably, leveraging natural fermentation and biotech methods as an alternative to conventional manufacturing.

1 investor

After operates a textile recycling service that collects unwearable clothing and bedding from customers, transports the items to recycling partners, and turns them into raw materials such as recycled yarn. Customers box up items, book a pickup, and receive a reward once collection is complete.

1 investor

Afterlife Mushrooms cultivates mushrooms by upcycling food scraps collected from restaurants and food establishments, offering over 20 species for culinary use. The company aims to divert food waste from landfills and reduce greenhouse gas emissions through local, sustainable mushroom production.

1 investor

Agapyo develops Jam™, a wood waste-based biodegradable thermoplastic that serves as a drop-in replacement for petroleum-based rigid plastic in agricultural products (such as nursery pots and tree protectors) and consumer goods (such as computer peripherals). Its patented technology converts forestry wood-waste into a moldable material compatible with existing molding machinery and biodegradable at end-of-life.

1 investor

Agilyx develops advanced recycling technology and invests in solutions across the plastics value chain, from feedstock management to chemical recycling, to convert plastic waste into a reusable resource. The company focuses on shifting from a linear economy to a circular model and supporting the low-carbon transition.

1 investor

agood company sells sustainable consumer products including plant-based phone cases and accessories, reusable bottles, and stone paper notebooks, marketed as eco-friendly alternatives to plastic goods. It runs a circularity program (agood loop) for reusing products and donates a portion of profits to environmental and community charities.

1 investor

AGREKA BUILD is a UK-based material innovation company that turns agricultural straw waste into thermal and acoustic building insulation, sold under the WHEATEX brand. Its products target net-zero and circular construction, offering a bio-based insulation that can be recycled into biofuel or composted at end of life.

1 investor

Agua Bonita makes low-sugar, non-carbonated aguas frescas in aluminum cans, using rescued surplus fruit that would otherwise go to landfill. The drinks come in traditional and culturally inspired flavors, are inspired by Mexican culture, and a portion of proceeds supports migrant farm workers; the company is based in California's Central Valley.

1 investor