Circular Economy Startups

Renet Japan operates a mail-based computer and small electronics recycling service authorized by the Japanese government under the Small Appliances Recycling Law. The service collects used desktops, laptops, tablets, and related devices from households nationwide, with free collection for computers containing hard drives and specialized data destruction services.

2 investors

Renow is an AI-powered recommerce platform that converts e-commerce returns into sustainable resales by offering virtual warehouses and a grading engine to retailers and 3PLs, while selling discounted second-hand products from top brands to consumers.

2 investors

Rentbrella operates a sharing platform for umbrellas with over 1,500 stations across more than 100 cities in three countries, serving both individual users and corporate clients. The company combines hardware (umbrella dispensing machines and smart lockers) with software to enable convenient, sustainable mobility solutions for urban environments.

2 investors

REPLOID designs, builds and operates industrial insect rearing facilities that convert regional organic residues from the food industry into insect proteins, fats and organic fertilizers. The company covers the full value chain of insect farming for circular-economy applications and is listed on the Vienna Stock Exchange.

2 investors

Revalue offers Verse, a platform for rapid assessment and continuous monitoring of climate and nature projects, combining geospatial intelligence, AI, and expert analysis to evaluate project viability and track environmental impact at scale.

2 investors

Revive is a real estate development company focused on sustainable urban housing projects and mixed-use property development in Belgium and Poland. The company specializes in creating residential and community spaces with emphasis on circular economy principles and social impact.

2 investors

Revivn provides enterprise IT hardware lifecycle management, helping companies securely repurpose, resell, or donate their retired devices to keep them out of landfills. Serving large businesses, it offers options to recover funds for outdated assets or donate them to underserved communities.

2 investors

RiverRecycle runs river cleanup and plastic recycling projects that collect waste from rivers and process low-value plastics, aiming to reduce ocean plastic pollution. It works with sustainability-oriented institutional partners on financially self-sustaining recycling projects, with operations in multiple countries including the Philippines.

2 investors

ROBENSO develops recycling equipment for processing solid municipal waste, including robotic waste pickers, compact automated material recovery facilities, and air jet waste sorters. The systems use robotics and AI, built around a Delta-robot arm, to sort waste and recover materials for the recycling industry.

2 investors

Robes Rental was a clothing rental service that merged with Boughtia, a Finnish secondhand fashion marketplace. The rental service is being discontinued as of end of 2025, with plans to integrate rental features into the Boughtia platform.

2 investors

Rookwood Operations develops phosphate recovery materials and solutions to remove excess nutrients from water treatment systems. The company produces circular products from recovered phosphorus—including LiftedP, a slow-release agricultural fertilizer—to support ecosystem health and agricultural productivity while addressing nutrient pollution in waterways.

2 investors

SABRN Tech designs and deploys integrated healthcare systems to improve patient outcomes and strengthen community resilience, with a focus on overcoming barriers of distance, geography, and infrastructure limitations. The company serves patients and communities globally, particularly those facing crisis or resource scarcity, through decentralized telehealth and autonomous healthcare capabilities.

2 investors

SageTech Medical designs, manufactures, and distributes proprietary medical device and pharmaceutical technologies for capturing and recycling waste volatile anaesthetic agents that harm the environment. Its systems have been used in NHS hospitals in the UK since 2019, serving healthcare and anaesthesia providers.

2 investors

The Sanergy Collaborative is a network of partner organizations addressing urban sanitation through a circular economy model, building safe sanitation systems, collecting waste, and upcycling it into products such as organic fertilizer, insect-based animal feed, and ecofuels. It serves cities and low-income communities across the developing world, with operations centered in Nairobi, Kenya.

2 investors

Sapro-Tech develops biopolymer-based textiles, including a patent-pending leather alternative made from fungi (mycelium) and plant materials that is biodegradable, plastic-free, and animal-free. The company targets the fashion industry with sustainable material alternatives and is producing samples for partner brands to prototype products.

2 investors

Saveggy makes a plant-based edible coating from rapeseed oil and gluten-free oat oil that extends the shelf life of fresh produce and reduces food waste and plastic use. The company works with growers, packers and retailers to integrate the technology into existing packing and distribution flows, starting with cucumbers.

2 investors

Savor produces sustainable fats and oils from non-animal sources for food manufacturing and consumer use. The company manufactures alternatives to conventional butter and palm oil without using animals, hormones, antibiotics, farmland, or synthetic fertilizers.

2 investors

SCO2 develops Nextract Technology, a supercritical CO₂ extraction process that processes food waste and biomass at scale to recover high-value ingredients for reuse in the food system. The company serves waste operators and food industry partners seeking to convert disposal streams into valuable outputs.

2 investors

ScrapAd is a digital marketplace for buying and selling scrap metal and recyclable materials across 45+ countries. The platform handles verification of suppliers, logistics management, and secure payments to simplify global metal trading for businesses.

2 investors

Sea6 Energy develops seaweed-derived biotechnology products and biomaterials for agriculture, animal health, food ingredients, and bioplastics, leveraging ocean farming and bioprocessing technologies. The company operates research facilities, manufacturing units, and processing operations across India and Indonesia.

2 investors

The Seam offers specialist repair and alteration services for clothing, shoes, handbags, and knitwear, matching customers with a UK-wide network of skilled Makers. It serves consumers seeking garment and accessory repairs across the UK.

2 investors

Seaqure Labs develops mycelium-based protein for animal feed, designed as a sustainable alternative to soy and conventional proteins. The product reduces carbon emissions, water use, and land use significantly while utilizing industrial byproducts in a circular production process.

2 investors

A consignment retailer that buys and resells designer clothing and accessories in good condition, positioning itself as an upscale resale marketplace with an environmental focus.

2 investors

Sedron transforms waste into renewable assets through proprietary technology and operations. The company serves waste management and environmental industries across multiple US locations.

2 investors