Circular Economy Startups

Hedoine manufactures premium sheer tights for women featuring ladder-resistant technology, tone-matching shades for diverse skin tones, and seamless designs. The company prioritizes sustainability by using biodegradable materials and durable construction to reduce fashion waste.

1 investor

Helsieni sells kits and supplies for growing oyster mushrooms at home using spent coffee grounds, and also cultivates fresh oyster mushrooms in shipping containers in Karjaa, Finland. The company sells its produce through local food networks and retailers in the Helsinki metropolitan area and offers products for outdoor mushroom cultivation.

1 investor

HeroGo sells discounted fresh groceries by rescuing surplus and imperfect food from organic producers, farmers, and manufacturers and delivering customisable grocery boxes to consumers' homes. For every box delivered, it donates two meals to people in need, positioning itself as a sustainable, anti-food-waste shopping service.

1 investor

hessnatur is a retailer of organic and natural-fiber clothing, offering apparel for children and adults made from certified materials such as organic cotton, organic merino wool, and cashmere. Its products are certified to standards like the Global Organic Textile Standard (GOTS).

1 investor

A European company developing a biomethane production platform that combines energy generation with waste management and agricultural product creation, delivering both renewable energy and local environmental benefits.

1 investor

HiGarden designs and builds nature-inspired indoor environments that incorporate regenerative principles to enhance occupant physical, mental, and intellectual well-being. The company applies bio-regenerative design principles to create workplaces and buildings that operate according to natural ecosystem logic.

1 investor

HIGHR produces an organic glossing lip oil that blends natural oils and butters as alternatives to silicone and petroleum-based ingredients, packaged in recyclable glass and made in the USA. The product line serves consumers seeking natural beauty products with sustainable packaging.

1 investor

Hilditch Group specializes in the resale and remarketing of used medical equipment for hospitals and healthcare organizations across the UK and Europe. The company helps healthcare providers convert redundant or decommissioned medical devices into value while supporting sustainability and circular-economy principles.

1 investor

Hinckley Recycling operates recycling centers and offices across Nigeria and other West and North African countries, providing recycling services from multiple locations. The company handles collection and processing of recyclable materials in the region.

1 investor

Hoffmann + Voss produces recycled plastic materials and thermoplastic compounds for industrial customers, including the automotive sector. Operating since 1962, the company runs quality-control testing such as infrared spectroscopy and X-ray fluorescence analysis and emphasizes sustainability by reducing industrial waste.

1 investor

HONEXT manufactures high-performance fibreboards made from recycled paper sludge, produced in Europe. Its boards are used for applications such as acoustic panels, interior wall cladding, partition walls, and shopfitting.

1 investor

HOPE Hydration designs and operates free water refill stations that combine filtered, cold drinking water with digital out-of-home advertising screens, funding the network through brand ad revenue. It serves advertisers, host venues, and the public across high-traffic spaces such as airports, stadiums, and event venues.

1 investor

HPNow produces hydrogen peroxide (Peroxide UltraPure) on-site through a patented electrochemical process that converts water, electricity, and air into low-concentration, high-purity peroxide for water treatment. Its systems serve industries such as agriculture irrigation, cooling tower treatment, and wastewater management, offering a chemical-free alternative to transported peroxide.

1 investor

HQ Pack designs and supplies packaging solutions for moving high-tech hardware safely through complex global supply chains, serving customers in demanding, technology-driven environments such as the semiconductor industry. Its offerings emphasize reliability and increasingly recyclable and reusable materials.

1 investor

HTBA manufactures flavonoids, vitamin B12, and active pharmaceutical ingredients (APIs) for international customers from facilities in Spain and the United States. The company operates manufacturing plants and applications labs in Barcelona and Murcia (Spain), with a North American headquarters and lab in Cincinnati, Ohio.

1 investor

Humara builds software for designing and simulating waste treatment facilities, letting engineering teams define feedstock and regulatory parameters, model mass flows, size equipment, and export BOMs, technical specs, and 3D layouts for construction. It serves waste management companies, plant operators, and engineering/bid teams in the recycling and waste treatment sector.

1 investor

HURR operates a peer-to-peer fashion rental marketplace where users rent clothing and earn loyalty credit on completed rentals. It offers features such as Flex passes for account top-ups and a credit system applied at checkout on future rentals.

1 investor

Hydrogen Refinery is a company associated with hydrogen energy. The page provides an investor contact but gives no detail about its products or technology.

1 investor

HydroPhos Solutions develops adsorbent technology to capture and reclaim phosphorus from wastewater for agricultural reuse, converting a pollutant into a usable resource. The company is a public benefit corporation focused on commercializing wastewater treatment solutions.

1 investor

Hyfé operates a refining process that extracts specialty ingredients and chemical building blocks from food processing waste, recovering compounds like glucose from biomass. Its outputs serve the food, beverage, personal care, and nutraceutical industries, as well as biomanufacturing for everyday chemical products.

1 investor

Hygglo is a peer-to-peer rental platform operating across Europe that enables individuals to earn money by renting out unused items and access goods on-demand. The platform handles verification and payments for rentals of tools, cameras, outdoor gear, electronics, and other items.

1 investor

i-Foria develops clean-tech systems for the circular bioeconomy, converting industrial waste, by-products, and renewable biological resources into higher-value, bio-based products. It serves companies and regions seeking to reduce waste and adopt circular production models.

1 investor

Intrinsic Foundries engineers biological systems to convert carbon emissions into valuable feedstock, targeting industrial sectors where carbon is generated in high volumes. The company applies synthetic biology and bioengineering to transform waste carbon into wealth at scale.

1 investor

ICTYOS is a Lyon-based tannery that produces marine leather from fish skins sourced through the French agri-food industry, using its own vegetable tanning process. The hypoallergenic, exotic-looking leathers are aimed at the luxury goods market with a focus on responsible, eco-friendly materials.

1 investor