Circular Economy Startups

Nordic Salt Cycle recovers critical minerals from recycled materials using molten salt technology to produce battery metals for European supply chains. The company provides midstream processing that converts black mass into nickel, cobalt, and lithium products for industrial refiners.

1 investor

NORPAC manufactures business and office papers, including branded copy paper products designed for everyday office use and environmental sustainability.

1 investor

Northern Biogas designs, builds, owns, and operates renewable natural gas (RNG) facilities that convert organic waste into clean energy. The company serves operators and communities seeking sustainable energy solutions with full-service project management from financing through operations.

1 investor

Northstar provides managed waste and recycling programs for furniture and home product manufacturers, handling diverse material streams and vendor coordination to improve landfill diversion and cost control. The company offers centralized reporting, hazardous material management, and performance optimization across multiple facilities.

1 investor

Nostoc sells organic/ecological agricultural products such as fertilizers, biostimulants, and microbial-based solutions (including Trichoderma, Metarhizium, Beauveria bassiana, and Bacillus strains) for crops, orchards, and gardens. It offers an online shop with a solution selector to help growers choose products based on their crop goals.

1 investor

Novacel manufactures protective films, technical tapes, papers, and machinery for industrial surface protection and material preservation across multiple market segments. The company serves manufacturing, logistics, and industrial customers worldwide with high-performance protective solutions backed by technical support.

1 investor

Novelis produces rolled aluminum and recycled aluminum solutions for industries including beverage and food packaging, automotive, aerospace, building and construction, and other industrial applications. It operates a circular business model focused on recycled aluminum content and reduced carbon emissions across its value chain.

1 investor

Novelplast develops technologies and solutions aimed at improving the sustainability of plastics. The company serves plastic manufacturers and related industries seeking to reduce environmental impact.

1 investor

Novobiom develops fungi-based biotechnology solutions for soil remediation, waste management, and sustainable production. The company uses mycoremediation and biomimicry to address environmental challenges such as soil contamination, plastic breakdown, and textile waste recycling.

1 investor

Novolo develops coffee processing and preservation technology to improve flavor consistency and product stability across the supply chain, serving coffee farmers, roasters, and businesses.

1 investor

Novomer (part of Danimer Scientific) develops biodegradable and compostable materials used in everyday products such as packaging and straws. The company focuses on sustainable materials for consumer and industrial applications, holding 480+ patents across two decades of research.

1 investor

NowCircular operates a tablet subscription service in Singapore, allowing customers to lease iPad models on flexible monthly terms with included damage protection and device refurbishment. The service emphasizes circular economy principles by refurbishing and re-circulating returned devices rather than discarding them.

1 investor

NPHarvest develops technology to restore nutrient cycles and advance circular economy practices in organic waste and environmental management. The company applies environmental engineering expertise to scale solutions for real-world impact in wastewater treatment and nutrient recovery.

1 investor

Npower develops filtration solutions using recycled materials to capture phosphorus and other pollutants from agricultural waste streams, wastewater, and air, enabling resource recovery and repurposing. The company serves agricultural, industrial, and semiconductor sectors with ion-exchange adsorption and biological filtration technologies.

1 investor

NuEra Solutions Circulaires develops industrial materials made from recycled plastics to replace traditional materials in demanding applications. Its first product is composite railway sleepers (ties) made from recycled plastic for modern rail infrastructure.

1 investor

NULIFE GreenTech is a Canadian climate-tech company that delivers permanent, independently verified carbon removal by converting underutilized biomass feedstocks into carbon-rich biocrude for geological storage using hydrothermal liquefaction (HTL). It builds, owns, and operates modular HTL facilities near major biomass sources, serving carbon-removal buyers and biomass generators such as food processors, grain handlers, pulp and paper mills, and municipal biosolids facilities.

1 investor

Nunam manufactures battery modules made from upcycled electric vehicle batteries for residential and commercial energy storage, offering cost-effective alternatives to lithium-ion systems with modular, scalable designs for diverse power applications.

1 investor

AllMade Materials develops industrial composite materials and biomass feedstocks from California tree nut byproducts such as almond shells and orchard wood. Its products include almond shell composite waste carts, agricultural storage bins, and industrial pallets, along with biomass feedstocks in chip, flour, and pellet forms.

1 investor

Nutreets builds aquaponic systems that recover waste heat from industrial facilities and datacenters to grow fish and vegetables in a closed-loop ecosystem. The company serves industrial operators and food retailers by integrating thermal energy recovery with food production, reducing water consumption by 90% compared to conventional agriculture.

1 investor

Nuvoo sells refurbished professional-grade laptops and desktop computers with a two-year warranty and a 30-day return policy, inspected and reconditioned by its own technicians. Aimed at consumers seeking affordable, more sustainable computers, the company operates in Finland and sells around 30,000 computers per year.

1 investor

Nvirovate develops a soy-based, compostable pressure-sensitive adhesive as a plant-derived alternative to petroleum-based label glues used in packaging and shipping labels. The company, which commercialized IP from Oregon State University, targets manufacturers of produce and packaging labels and reports its adhesive generates at least 70% less greenhouse gases than conventional glues.

1 investor

NXTClean produces low-carbon renewable fuels including renewable diesel, sustainable aviation fuel, renewable natural gas, and hydrogen from organic waste materials and biomass for the transportation and aviation industries. The company operates production facilities on North America's west coast with access to Asia Pacific markets.

1 investor

Nyungu manufactures sustainable, plant-based menstrual products using pineapple leaves and corn husk fibers for women and girls, with a social mission to donate products to those who cannot afford them. The company operates in Kenya with a focus on climate-positive production and menstrual health equity.

1 investor

Oak Ridge Waste & Recycling provides commercial waste services, residential garbage pickup, rolloff dumpster rental, and transfer station services to residents and businesses. The company has been acquired by Interstate Waste Services (IWS), which serves communities across New York, New Jersey, and Connecticut, including Fairfield, Litchfield, Westchester, and Putnam counties.

1 investor