Circular Economy Startups

Metaloop operates an all-in-one platform for industrial manufacturers to buy and sell metal scrap, handling logistics, financing, and recycling through a global network of recyclers and smelters. Its Metaloop Portal gives customers visibility over transactions, quality certificates, and pickups across local and international operations.

1 investor

Metaloop operates a digital marketplace for scrap and recycled metal, connecting suppliers with buyers such as foundries while handling match-making, transportation, and financing. It aims to make secondary metal more available and reduce transport emissions, targeting the metals industry as part of the circular economy.

1 investor

MicroStar Logistics provides outsourced keg supply chain management for breweries, handling inventory tracking, logistics, and maintenance across owned and leased kegs. The company operates keg pools in the U.S. and internationally through its Kegstar division.

1 investor

Microtec D&H develops micronization and precision fine-powder production technology, using cryogenic, ambient, and thermodynamic milling and air-classification systems to reduce complex feedstocks — including rubbers, plastics, composites, biomass, and recycled glass — to exact particle specifications. Its patented equipment and tolling services serve agriculture, construction, automotive, electronics, and medical industries, with a waste-to-value focus such as producing Ground Glass Pozzolan for lower-carbon concrete.

1 investor

Milestone is an environmental infrastructure company that operates permitted facilities to process and permanently dispose of complex waste streams, including energy and industrial waste, using patented deep well injection technology that sequesters waste underground. It serves businesses needing regulated, compliant waste management, with a stated focus on Texas RRC regulations.

1 investor

Miller Environmental Group provides environmental waste handling and disposal services for commercial, industrial, government, and municipal generators. It does not serve residential or household waste customers.

1 investor

Mina Storm designs and sells women's clothing, including the NOBRADRESS® line of bandeau dresses with built-in support so no bra is needed. Its garments are made in Portugal using Lenzing EcoVero™ fibers sourced from sustainably managed forests.

1 investor

Minera converts composting facilities into multi-stream biorefineries, offering faster processing cycles, higher-value output, and a verifiable carbon-removal stream. It serves composting operators, municipalities, and investors.

1 investor

Mini Green Power builds automated, patented industrial plants that convert biomass, industrial, and household waste into decarbonized heat and electricity, along with biochar production for CO2 sequestration. The company designs, manufactures, installs, commissions, and operates these waste-to-energy installations.

1 investor

MINIWIZ designs, engineers, and manufactures products, architecture, and machinery that convert plastic and other waste into higher-value building materials, furnishings, and structures. Its work spans upcycled construction, medical facilities, public art, and consumer goods for institutions, cities, and universities.

1 investor

MINT sells refurbished electric bikes in France, reconditioning each bike through a 41-point inspection at its Aix-en-Provence workshop and offering a 12-month warranty, home delivery, and a 15-day trial. This specific listing is a used Haibike AllTrack 7 720Wh electric mountain bike.

1 investor

Mint Smartwash operates an express tunnel car wash system using automated conveyorized technology and specialized control software, serving consumers seeking quick vehicle cleaning. The company emphasizes environmental sustainability through a water recycling system that filters and reuses 80% of wash water.

1 investor

Mission ESG is a holding company that operates multiple waste management, recycling, and septic service businesses across Canada.

1 investor

Mobile Fluid Recovery provides on-site industrial waste recycling services using patented mobile technology, converting waste streams into reusable materials and revenue sources for manufacturing facilities. The company specializes in fluid and material recovery with the goal of enabling clients to participate in circular economy practices.

1 investor

Apkudo provides software to help enterprises recover corporate-owned IT assets, tracking device returns, automating end-user follow-up, and extracting value through resale, reuse, or recycling. Its platform integrates with IT and endpoint systems and offers circularity impact reporting, backed by AI-powered robotics and a network of logistics and disposition providers.

1 investor

Mobius Farms uses black soldier fly larvae to convert food waste into protein-rich feed and organic fertilizer through bioconversion, targeting farms, pet owners, and food systems seeking sustainable alternatives. The company operates in South Australia and serves customers wanting locally produced, environmentally conscious agricultural products.

1 investor

Modern Synthesis is a biotechnology company that uses bacteria to produce nanocellulose-based biomaterials, creating bio-based coated textiles as plastic- and petrochemical-free alternatives to materials like leather. It supplies these materials to fashion, automotive, and other brands and manufacturers, with production based in South West London.

1 investor

MoEa sells sneakers made from biomaterials, along with related accessories such as bamboo socks, laces, and a sneaker cleaning kit, and runs a second-life program to refurbish worn pairs. The brand offers direct-to-consumer sales with worldwide shipping.

1 investor

Mogu develops bio-based interior design materials made from fungal mycelium and upcycled residues, including acoustic wall panels, wall coverings, and resilient flooring. Its products serve interior design and architecture for homes, workplaces, retail, and hospitality spaces.

1 investor

Continuum Powders manufactures high-quality metal powders for additive manufacturing and advanced industrial applications using advanced atomization and circular manufacturing processes. The company serves manufacturers seeking to strengthen supply chain resilience, reduce material waste, and meet performance standards for critical applications.

1 investor

Momentum Technologies develops modular, localized processing technology to recover high-purity, reusable critical minerals and metals from sources such as spent batteries and electronic waste. It serves energy storage industries, gigafactories, recyclers, waste handlers, and original equipment manufacturers.

1 investor

Monomeris Chemicals develops a patented ionic recycling technology and compact on-site machines that depolymerize mixed and complex plastic waste into circular monomers such as ethylene, propylene, and butene for industrial or energy use. It serves landfill and incineration sites, industrial firms, recyclers, and local authorities looking to convert plastic waste destined for disposal into primary raw materials.

1 investor

Monsapo develops and operates machines that convert used cooking oil into natural cleaning products through renewable energy-powered, decentralized systems. The company serves organizations seeking sustainable sanitation solutions while addressing environmental waste and chemical contamination.

1 investor

Sells composting-related products for commercial composting facilities as well as backyard and garden composting.

1 investor