Circular Economy Startups

Fussy sells natural, planet-friendly personal care products marketed as effective and easy to use. It operates a direct-to-consumer online store in the United Kingdom.

1 investor

Future Greens builds advanced anaerobic digesters that convert organic waste into biogas energy, targeting breweries and food manufacturers. Their compact, AI-controlled reactors require 85% less space than industry standard systems and handle mixed organic waste streams for simplified deployment and maximum energy recovery.

1 investor

Futurity Bio-Ventures develops renewable chemicals and materials from lignin, cellulose, and hemicellulose as alternatives to fossil-based petrochemicals, serving industries such as construction, infrastructure, and packaging. The company operates a product development lab and is working toward New Zealand's first advanced biorefinery to produce platform chemicals from forestry by-products.

1 investor

Gaea provides software for advanced recycling businesses to manage their operations. The platform is designed to support recycling companies in optimizing their supply chain and operational processes.

1 investor

GaiaTech uses a proprietary technology to extract and upcycle active and functional ingredients from agricultural and food production byproducts, offering natural compounds such as antioxidant extracts for use in cosmetics and food applications. It works with industry customers via innovation discovery and custom development services, sourcing residues from producers and processors and delivering tailored ingredient solutions.

1 investor

Galderia develops technology based on extremophile microalgae, including algae-derived bioadsorbents used for recovering trace metals such as palladium. The Japanese company applies its R&D toward sustainable resource recycling and circular economy applications.

1 investor

Garderob is a resale platform for buying and selling stylish secondhand clothing, connecting people with similar styles. It serves consumers across Kazakhstan, offering delivery, multiple payment methods, and returns.

1 investor

Gårdsfisk raises fish on Swedish farms in a near-closed-loop system where fish waste fertilizes crops grown on the adjacent fields, aiming to reduce overfishing and eutrophication. It produces climate-certified fish products (including smoked Clarias and fish meatballs) from farms in Skåne, Sweden.

1 investor

Garmentory is an online marketplace that curates and sells fashion, home goods, and kids' items from vetted independent boutiques and emerging designers. The platform emphasizes quality, limited-run pieces, and sustainable consumption through its resale section called The Loop.

1 investor

Sweet Gazoil develops patented pyrolysis and Surface Flash Cracking technologies that convert mixed waste plastics and heavy or used/waste oils into diesel fuels and other useful products. It offers small-scale micro-refineries and processes designed to handle dirty, difficult feedstocks for waste-recycling and fuel production operations.

1 investor

GCLIProw makes GCLIP Drive, a rowing shoe-clip system that clips in and out of footboards and erg machines for use on the water or at the gym. Its products are made with 3D-printed recycled plastics and injection-molded mountings, and are sold to boat manufacturers, clubs, schools, and individual rowers worldwide.

1 investor

Geev is a mobile app and website where individuals give away and pick up free everyday objects near them, using geolocation to connect donors and recipients. It positions itself as France's leading peer-to-peer object-donation platform and offers a paid "Geev Plus" tier with added features.

1 investor

Geiger-Notes manufactures printed promotional products such as calendars and sticky notes, including a recycled "green+blue" line certified with the "Blauer Engel" eco-label. The company produces roughly 15 million calendars and sticky notes annually with "Made in Germany" quality and ships worldwide.

1 investor

Genera grows carbon-negative grass fiber and processes it into commercially compostable packaging, non-wood pulp and bioproducts for brand owners and consumers. It partners with U.S. farmers and landowners to source the grasses, with products designed to be composted after use.

1 investor

Général Emballage manufactures custom corrugated cardboard plates, packaging, and displays in various flute configurations, with high-resolution flexography printing capabilities in up to 6 colors. The company serves packagers and food/beverage businesses across Algeria with services including prototyping, die-cutting, and post-print finishing.

1 investor

Genomatica (Geno) develops biotechnology processes to produce bio-based chemicals and materials—such as 1,4-butanediol (BDO), butylene glycol for cosmetics, and plant-based nylon—as alternatives to fossil-fuel-derived inputs. It licenses and scales these technologies with industrial partners across the chemicals, beauty, and materials industries in the US, Europe, and Asia.

1 investor

geoFluxus provides a data analytics platform that helps companies and governments track and optimize their waste and material streams to achieve sustainability and circular economy goals. The platform offers data insights and support for waste producers to understand their environmental impact and identify financial and sustainability opportunities.

1 investor

Georgette Packaging provides sustainable, eco-friendly packaging solutions including boxes, bags, and cups for brands. The company works with businesses looking to upgrade their packaging with environmentally responsible options.

1 investor

GIDARA Energy develops HTW-based gasification technology that converts municipal waste into clean, tar-free syngas for producing sustainable aviation fuel (SAF), methanol, hydrogen, LNG, and circular chemicals. Its industrial-scale process serves waste-to-fuel program developers seeking a proven, bankable pathway to lower-emission fuels.

1 investor

GipsRec.nl recycles gypsum boards, gypsum blocks, aerated concrete, and other gypsum-containing waste streams into reusable powders and granules, which are largely supplied back to the gypsum board industry. It serves the Benelux and northern Germany from its facility in Farmsum, near Delfzijl in the Netherlands.

1 investor

GiveMeTap sells reusable water bottles and operates a network of refill locations at participating cafes and restaurants; 20% of bottle revenue funds clean water access projects in Africa through partnerships with NGOs.

1 investor

Glambot is an online marketplace where consumers can sell their unwanted or gently used makeup for cash and buy authentic pre-owned and discontinued beauty products at discounted prices. It focuses on the resale of cosmetics such as MAC blushes, eyeshadows, and lipsticks.

1 investor

GlamCorner is an online fashion rental platform that lets women access designer clothing and apparel for a fraction of retail price as a sustainable alternative to buying new. Founded in 2012 and B Corp certified, it serves the Australian market.

1 investor

Glass Half Full is a glass recycling operation that collects glass through residential, commercial, drop-off, and event pickups, and runs programs such as coastal restoration (ReCoast) and Mardi Gras beads recycling. It offers recycling services and related environmental initiatives.

1 investor