Closed Loop Partners, established in 2014 and headquartered in New York, is a private equity firm focused on early-stage investments in the circular economy. It provides capital and strategic support to companies and cities aiming to increase recycling rates and build sustainable supply chains. The firm invests in innovative recycling technologies, sustainable consumer goods, and advanced supply chains, with a focus on creating positive environmental and social impact.
COO, Head of Capital Partnerships and Managing Director
Julia Viner
Associate
Past deals in Sustainability
LAIIER
Seed Round in 2025
LAIIER is an innovative B2B technology company specializing in smart, connected solutions for early leak detection in commercial buildings and industrial facilities. With a foundation in advanced printed sensor technology, LAIIER's products, such as the Severn WLD™ smart tape, combine precision sensing, easy installation, and wireless communication to deliver real-time monitoring of water and hydrocarbon leaks. These solutions mitigate damage, reduce operational downtime, and enhance sustainability. Leveraging a subscription-based business model, LAIIER serves industries including commercial real estate, industrial machinery, and roofing, providing actionable insights through its proprietary cloud platform. Backed by a portfolio of patents and collaborations with leading industry partners, LAIIER is driving innovation at the intersection of IoT and sustainability, empowering businesses to prevent costly leaks while reducing their environmental footprint.
Earthodic
Seed Round in 2024
Earthodic is an Australian materials science company that specializes in the development of bio-based coatings aimed at reducing reliance on non-renewable resources. The company produces a biobased water-resistant coating suitable for use on pulped paper and various products. This innovative coating is designed for manufacturers, converters, and consumer brands, enabling them to coat items such as packaging and materials used in agriculture and construction. By offering a sustainable alternative to traditional plastic, Earthodic contributes to environmentally friendly practices in multiple industries.
Neutreeno
Seed Round in 2024
Neutreeno is a deep tech spinout from the University of Cambridge that specializes in engineering an intelligent decarbonization system aimed at helping businesses achieve net zero emissions. The company's innovative system is designed to prevent emissions at the source while providing clarity and transparency throughout the complex value chain. By offering insights into resource efficiency, Neutreeno enables clients to minimize waste and enhance circularity, ultimately guiding them toward achieving absolute zero emissions.
Eureka Recycling
Debt Financing in 2024
Eureka Recycling is an organization that offers products and services that concentrate on reducing waste through reuse, recycling, and composting. Its goal is to show that waste is avoidable, not inevitable. The group provides answers to the social, environmental, and health issues brought on by garbage through its services, projects, and policy work. It includes a number of programs that include waste reduction, producer responsibility, reuse, recycling, and composting to stop the wasteful loss of economic garbage.
Mycocycle
Seed Round in 2024
Mycocycle is an environmental remediation company that specializes in decarbonizing waste streams through the innovative use of fungi in a process known as mycoremediation. By developing engineered ecosystems, Mycocycle transforms toxic waste into non-toxic biomass, which can then be repurposed for the manufacture of new products. The company serves a diverse clientele, including waste management firms, landfill operators, material recycling facilities, and manufacturers seeking to adopt closed-loop processes. Its technologies not only help divert materials from landfills but also enable businesses to reuse feedstock in manufacturing or recycle it for other applications, contributing to a more sustainable waste management landscape.
Sage Sustainable Electronics
Acquisition in 2023
Sage Sustainable Electronics is a privately held company based in Columbus, Ohio, specializing in IT asset management and disposition services. With over three decades of combined experience among its founders, Sage is committed to sustainability by extending the life of used electronics. The company offers a comprehensive range of lifecycle services, including hardware appraisals, redeployments, secure logistics, data destruction, data retention, and refurbishment. These services help customers recover residual value from their assets while minimizing their carbon footprint. Sage’s facilities are certified to ISO 9001, 14001, and OHSAS 18001 standards, and it is recognized as a Microsoft Authorized Refurbisher, reflecting its dedication to quality and environmental responsibility in IT asset disposition.
Earthodic
Pre Seed Round in 2023
Earthodic is an Australian materials science company that specializes in the development of bio-based coatings aimed at reducing reliance on non-renewable resources. The company produces a biobased water-resistant coating suitable for use on pulped paper and various products. This innovative coating is designed for manufacturers, converters, and consumer brands, enabling them to coat items such as packaging and materials used in agriculture and construction. By offering a sustainable alternative to traditional plastic, Earthodic contributes to environmentally friendly practices in multiple industries.
EcoSpirits
Venture Round in 2023
EcoSpirits is a company focused on creating a closed-loop distribution system aimed at minimizing packaging waste within the premium spirits supply chain. It has developed innovative technology that includes a fully reusable, tamper-proof, and shock-proof glass vessel, alongside a semi-automated facility for sanitizing, refilling, and sealing spirits. This approach not only significantly reduces packaging and transport costs for businesses but also leads to a substantial reduction in carbon footprints. By streamlining the distribution process, EcoSpirits offers a sustainable alternative that benefits both the environment and the bottom line.
Solarcycle
Series A in 2023
Solarcycle is a solar technology company focused on creating a circular economy for solar energy and renewables through innovative recycling solutions. It provides an affordable and environmentally friendly service for recycling and reusing decommissioned solar panels, targeting solar asset owners. Utilizing patented technology, Solarcycle can recover up to 95% of valuable materials such as silver, silicon, copper, and aluminum from solar panels, while also facilitating the repurposing or recycling of panels still in use. This comprehensive platform aims to enhance solar sustainability and ensure that clean energy remains renewable over its entire lifecycle.
Ucrop.it
Seed Round in 2022
Ucrop.it operates a blockchain-based agricultural management platform designed to enhance transparency and accessibility between farmers and companies. The platform facilitates the monitoring of sustainable farming practices by enabling data governance and traceability, allowing stakeholders to effectively communicate and act upon sustainability achievements. This includes initiatives such as carbon footprint reduction and the transition to regenerative agriculture. By fostering collaboration, Ucrop.it provides farmers, program developers, and brands with the tools to verify and share their sustainability efforts, ensuring that these achievements are both real and traceable. Ultimately, the platform aims to promote sustainable agricultural practices on a global scale, benefiting millions of acres of farmland.
Ucrop.it
Seed Round in 2022
Ucrop.it operates a blockchain-based agricultural management platform designed to enhance transparency and accessibility between farmers and companies. The platform facilitates the monitoring of sustainable farming practices by enabling data governance and traceability, allowing stakeholders to effectively communicate and act upon sustainability achievements. This includes initiatives such as carbon footprint reduction and the transition to regenerative agriculture. By fostering collaboration, Ucrop.it provides farmers, program developers, and brands with the tools to verify and share their sustainability efforts, ensuring that these achievements are both real and traceable. Ultimately, the platform aims to promote sustainable agricultural practices on a global scale, benefiting millions of acres of farmland.
Solarcycle
Seed Round in 2022
Solarcycle is a solar technology company focused on creating a circular economy for solar energy and renewables through innovative recycling solutions. It provides an affordable and environmentally friendly service for recycling and reusing decommissioned solar panels, targeting solar asset owners. Utilizing patented technology, Solarcycle can recover up to 95% of valuable materials such as silver, silicon, copper, and aluminum from solar panels, while also facilitating the repurposing or recycling of panels still in use. This comprehensive platform aims to enhance solar sustainability and ensure that clean energy remains renewable over its entire lifecycle.
By Rotation
Seed Round in 2022
By Rotation is a pioneering social fashion rental app that enables users to share their wardrobes, promoting sustainable fashion consumption. The platform allows individuals to rent, lend, sell, and rotate clothing items, providing flexibility in pricing and rental durations. Users can easily list their clothing, receive rental requests, and communicate with potential renters through a secure messaging system. By facilitating this peer-to-peer exchange, By Rotation aims to benefit both the environment and the financial well-being of its users.
Mori
Series B in 2022
Mori, formerly known as Overlook Research, is a company that develops a natural biopolymer coating designed to extend the shelf life of perishable foods. Founded in 2016 and headquartered in Boston, Massachusetts, Mori's innovative coating is made from proteins extracted from natural silk using salt and water. This protective layer helps slow the spoiling process of various food items, including fruits, vegetables, meat, and seafood, thereby reducing food waste. By focusing on sustainable and economical solutions, Mori aims to transform the food supply and enhance the efficiency of the food, agriculture, and packaging industries.
Evergreen
Funding Round in 2021
Evergreen is a plastic recycling and polyester resin production company, originally established in 1998 as a division of Greenbridge. The company focuses on providing a sustainable and reliable supply of high-quality polyester resin, primarily for use in PET strapping. Through its recycling efforts, Evergreen contributes to environmental sustainability by transforming plastic waste into valuable raw materials, thus supporting the circular economy.
Just Salad
Private Equity Round in 2021
Just Salad is a fast-casual restaurant chain that focuses on providing healthy and affordable meals, including salads, wraps, smoothies, and soups. The company emphasizes sustainability through various initiatives, such as its Reusable Bowl Program, which encourages customers to bring their own bowls for discounts, thereby reducing single-use packaging waste. Additionally, Just Salad was the first restaurant chain in the United States to implement a carbon-labeled menu, which highlights the environmental impact of each meal. The chain utilizes compostable packaging and recycling programs to further minimize waste, aligning its operations with a commitment to health and sustainability while offering fresh ingredients and nutritious options at accessible prices.
Dimpora
Seed Round in 2021
Dimpora AG, based in Zürich, Switzerland, specializes in the design and manufacture of eco-friendly waterproof membranes for the outdoor textile industry. The company produces functional membranes that are primarily composed of polyurethane and utilize a unique template removal method to achieve breathability while maintaining water resistance. Dimpora's innovative technology allows for the direct application of membranes onto various 3D surfaces, enabling fast sweat transport and complete protection from rain. Committed to sustainability, Dimpora aims to develop next-generation high-performance membranes that enhance outdoor experiences without compromising environmental integrity. The company focuses on creating products that not only perform well but also prioritize the use of recyclable materials, aligning with its vision of promoting responsible enjoyment of nature.
Mori
Series B in 2021
Mori, formerly known as Overlook Research, is a company that develops a natural biopolymer coating designed to extend the shelf life of perishable foods. Founded in 2016 and headquartered in Boston, Massachusetts, Mori's innovative coating is made from proteins extracted from natural silk using salt and water. This protective layer helps slow the spoiling process of various food items, including fruits, vegetables, meat, and seafood, thereby reducing food waste. By focusing on sustainable and economical solutions, Mori aims to transform the food supply and enhance the efficiency of the food, agriculture, and packaging industries.
Thrive Lot
Seed Round in 2021
Thrive Lot is a platform focused on creating sustainable outdoor spaces, including various types of gardens such as pollinator, vegetable, forest, and herb gardens. The company offers comprehensive services that encompass the design, installation, and ongoing maintenance of these gardens, ensuring long-term abundance and ecological balance. Their team of master growers specializes in agroecological landscaping, utilizing natural patterns to develop self-sufficient systems. By providing full visibility into each project's lifecycle, Thrive Lot empowers clients to cultivate habitats for wildlife, enhance soil resilience, and foster a deeper connection with nature.
Ucrop.it
Seed Round in 2020
Ucrop.it operates a blockchain-based agricultural management platform designed to enhance transparency and accessibility between farmers and companies. The platform facilitates the monitoring of sustainable farming practices by enabling data governance and traceability, allowing stakeholders to effectively communicate and act upon sustainability achievements. This includes initiatives such as carbon footprint reduction and the transition to regenerative agriculture. By fostering collaboration, Ucrop.it provides farmers, program developers, and brands with the tools to verify and share their sustainability efforts, ensuring that these achievements are both real and traceable. Ultimately, the platform aims to promote sustainable agricultural practices on a global scale, benefiting millions of acres of farmland.
Mori
Series A in 2020
Mori, formerly known as Overlook Research, is a company that develops a natural biopolymer coating designed to extend the shelf life of perishable foods. Founded in 2016 and headquartered in Boston, Massachusetts, Mori's innovative coating is made from proteins extracted from natural silk using salt and water. This protective layer helps slow the spoiling process of various food items, including fruits, vegetables, meat, and seafood, thereby reducing food waste. By focusing on sustainable and economical solutions, Mori aims to transform the food supply and enhance the efficiency of the food, agriculture, and packaging industries.
Reterra
Venture Round in 2020
Reterra Corporation, located in Houston, Texas, specializes in recycling polyethylene terephthalate (PET) materials, including x-ray films, movie films, thermoforms, and bottles. The company has developed advanced recycling technology that transforms waste PET plastic byproducts into valuable intermediary products. This innovative approach allows package suppliers and manufacturers to incorporate more recycled content into their supply chains, enhancing sustainability while reducing the costs associated with PET recycling. Reterra also produces RetroSeed, a polyol used in the creation of resins, further contributing to its commitment to recycling and environmental responsibility.
Rebound Technologies
Series A in 2020
Rebound Technologies, Inc. specializes in the manufacturing and supply of advanced thermal energy storage systems tailored for commercial refrigeration and off-grid cooling applications. Founded in 2012 and based in Commerce City, Colorado, the company offers innovative products such as IcePoint, which integrates an embedded thermal energy storage system to significantly reduce cooling costs for supermarkets, and SunChill, designed for agricultural needs in developing regions. SunChill effectively converts solar thermal energy into refrigeration, enhancing agricultural productivity by rapidly cooling harvested crops and maintaining their quality at local markets. Rebound Technologies emphasizes customized solutions that utilize renewable resources and waste heat capture, aiming to improve energy efficiency and reduce costs while supporting self-sustaining business models. The company's initiatives are currently backed by research grants from the U.S. Federal Government.
The Renewal Workshop
Series A in 2019
The Renewal Workshop Inc. is a company based in Cascade Locks, Oregon, that focuses on manufacturing renewed apparel and upcycled materials from discarded textiles. Founded in 2014, it partners with leading brands and retailers to transform unsellable returns and excess inventory into viable products. The company offers a diverse range of items, including jackets, hoodies, dresses, and swimwear, as well as luggage and gift cards. By integrating renewal services for apparel and home goods, The Renewal Workshop aims to minimize waste and promote sustainable practices within the fashion industry. Its operations not only generate revenue for clothing brands through resale but also contribute to reducing environmental impacts associated with textile waste. The products are available through both physical stores and online platforms.
Evrnu
Series A in 2019
Evrnu is a textile innovations company focused on developing regenerative fiber technologies that convert discarded clothing into high-quality fibers. By breaking down cotton garment waste to the molecular level, Evrnu creates engineered fibers with enhanced environmental benefits. This process supports a circular ecosystem by enabling garment manufacturers to produce fibers such as regenerative cellulosic, regenerative polyester, and recoverable stretch. The company's approach not only addresses textile waste but also promotes sustainable practices within the fashion industry.
Mori
Seed Round in 2019
Mori, formerly known as Overlook Research, is a company that develops a natural biopolymer coating designed to extend the shelf life of perishable foods. Founded in 2016 and headquartered in Boston, Massachusetts, Mori's innovative coating is made from proteins extracted from natural silk using salt and water. This protective layer helps slow the spoiling process of various food items, including fruits, vegetables, meat, and seafood, thereby reducing food waste. By focusing on sustainable and economical solutions, Mori aims to transform the food supply and enhance the efficiency of the food, agriculture, and packaging industries.
CLUBZERØ
Grant in 2019
CLUBZERØ addresses the pressing issue of packaging waste through its innovative AI-powered zero waste packaging system, offering a scalable and cost-effective alternative to single-use packaging. The company provides a comprehensive service that includes packaging, drop-off points, and logistics, resulting in costs that can be up to 30% lower than traditional single-use options. CLUBZERØ's model stands out by achieving true zero waste, avoiding the contamination and greenhouse gas emissions associated with compostable packaging. By transitioning to CLUBZERØ, brands can potentially reduce CO2 emissions by up to 93%. The system, which uses advanced AI for interoperability, has been successfully implemented in the UK and U.S., fulfilling over 1.3 million orders and preventing 2.6 million single-use items from reaching landfills. The company has partnered with major brands such as Starbucks, McDonald’s, and Coca-Cola, earning accolades from organizations like the Ellen MacArthur Foundation. CLUBZERØ's goal is to transform the returnable packaging sector, enhancing scalability and adaptability while providing a sustainable solution for the food and beverage industry.
Algaeing
Venture Round in 2019
Algaeing is a manufacturer specializing in sustainable dyes and fibers for fabrics, utilizing algae-based materials. Their innovative products require significantly less water and energy to produce compared to traditional methods, while being free of hazardous toxins. This environmentally friendly approach allows textile manufacturers and brands to align with sustainability goals and appeal to eco-conscious consumers. Additionally, Algaeing offers services that enhance the moisture and protection of the skin and body, providing antioxidants, vitamins, and other nutrients through their fabric solutions.
For Days
Seed Round in 2018
For Days, Inc., established in 2016 and headquartered in Brooklyn, New York, specializes in manufacturing and recycling t-shirts for men and women. The company operates on a subscription and membership basis, providing customers with tees made from recycled fabric. Its unique business model encourages sustainability by allowing users to return their products once they become worn out or stained, facilitating a closed-loop recycling system and reducing waste in the fashion industry. For Days' proprietary platform, Trashie, incentivizes customers to embrace clothing recycling on a large scale, offering tangible rewards for their participation.
rPlanet Earth
Venture Round in 2018
RPlanet Earth specializes in sustainable packaging solutions by recycling post-consumer plastics, particularly PET materials. The company employs a comprehensive recycling and decontamination process to create high-quality rPET content packaging products. By operating under a closed-loop system, RPlanet Earth ensures the efficient reuse of materials, offering clients a reliable supply of environmentally friendly packaging at competitive prices. This commitment to sustainability not only reduces the carbon footprint associated with plastic packaging but also provides a practical solution for businesses seeking to minimize their environmental impact.
TemperPack
Venture Round in 2018
TemperPack, established in 2015, designs and manufactures sustainable thermal packaging solutions for temperature-sensitive goods. Based in Richmond, Virginia, with facilities in Richmond and Las Vegas, the company serves e-commerce food businesses in the U.S., U.K., and Canada. TemperPack's products include insulated shipping containers, one-piece boxes, two-piece liners, and temper sleeves, used for transporting perishable food, medical supplies, and other sensitive items. Its proprietary, curbside recyclable material, OCC-E, enables large organizations to manage global supply chains with minimal environmental impact, making TemperPack a leader in sustainable packaging.
PureCycle Technologies
Venture Round in 2018
PureCycle Technologies LLC specializes in producing recycled polypropylene through a unique recycling process that effectively separates color, odor, and contaminants from plastic waste feedstock. This process yields recycled polypropylene with properties equivalent to virgin polymer, enabling companies to utilize a sustainable, high-quality resin. By converting waste plastic into virgin-like plastic, PureCycle aims to close the loop on plastic reuse, making recycled materials more accessible at scale. Founded in 2015, the company is headquartered in Ironton, Ohio, and operates with a focus on enhancing the circular economy for plastics.
First Star Recycling
Debt Financing in 2018
First Star Recycling provides recycling practices for homeowners and businesses to manage their waste. They help their communities and surrounding areas reduce their waste going to landfills and make the most from their wasted resources. They provide residential recycling and resource management services.
GreenMantra Technologies
Series D in 2017
GreenMantra Technologies Ltd. is a Canadian company based in Brantford that specializes in the manufacture and marketing of synthetic waxes, polymer additives, and specialty chemicals derived from recycled plastics. Established in 2010, the company employs a proprietary thermo-catalytic process to efficiently convert waste plastics, including challenging materials like grocery bags and film, into valuable products. Its offerings include polyethylene and polypropylene waxes, which are utilized in various industries such as asphalt roofing, paving, polymer processing, adhesives, and plastic composites. By focusing on the upcycling of hard-to-recycle plastics, GreenMantra contributes to sustainable practices while providing high-quality materials that cater to diverse manufacturing needs.
Rebound Technologies
Seed Round in 2017
Rebound Technologies, Inc. specializes in the manufacturing and supply of advanced thermal energy storage systems tailored for commercial refrigeration and off-grid cooling applications. Founded in 2012 and based in Commerce City, Colorado, the company offers innovative products such as IcePoint, which integrates an embedded thermal energy storage system to significantly reduce cooling costs for supermarkets, and SunChill, designed for agricultural needs in developing regions. SunChill effectively converts solar thermal energy into refrigeration, enhancing agricultural productivity by rapidly cooling harvested crops and maintaining their quality at local markets. Rebound Technologies emphasizes customized solutions that utilize renewable resources and waste heat capture, aiming to improve energy efficiency and reduce costs while supporting self-sustaining business models. The company's initiatives are currently backed by research grants from the U.S. Federal Government.
Natural Machines
Venture Round in 2017
Natural Machines specializes in innovative 3D printing solutions aimed at personalizing products in the food, personal care, and pharmaceutical industries. The company offers B2B2C solutions that allow for product creation at the point of consumption, catering to individual needs and preferences. Their flagship product, Foodini, is a 3D food printer that utilizes real ingredients to create customized meals. In 2021, Natural Machines expanded into personal care by partnering with BASF to develop tailored face masks, which are designed based on individual facial scans. In 2022, they further ventured into pharmaceuticals by collaborating with CurifyLabs to produce personalized drug treatments. The company's mission emphasizes sustainability and reducing waste, aligning with the UN Sustainable Development Goals for responsible consumption and production. Through their technology, Natural Machines aims to enhance the quality of products while promoting healthier lifestyles.
Loliware
Seed Round in 2017
Loliware LLC is a company based in Beacon, New York, that specializes in manufacturing biodegradable and edible disposable cups and other single-use products aimed at eliminating plastic waste. Founded in 2015, the company has developed an innovative range of products made from bio-renewable seaweed, which are designed to be compostable and environmentally friendly. Loliware's mission is to promote a plastic-free, decarbonized future by offering alternatives that are not only compostable but also have a lower carbon footprint compared to traditional plastics. Their initial product, an ocean-safe and tree-free drinking straw, has received accolades for its potential to set new industry standards. The company is actively working on expanding its product line, with plans to introduce six new items by the end of 2023, all of which aim to provide sustainable solutions for chefs, restaurant chains, and eco-conscious businesses looking to reduce their environmental impact.
Drought Diet Prouducts
Non Equity Assistance in 2017
Drought Diet Products is a manufacturer focused on creating innovative solutions for sustainable agriculture. The company has developed a climate-resilient tool designed to efficiently apply water to crops while minimizing waste from evaporation and deep percolation. This tool features sub-irrigation zone pipes that utilize greywater and rainwater catchment systems. Additionally, Drought Diet Products incorporates post-consumer film plastic feedstock in its irrigation piping, addressing both water conservation needs and the challenges associated with film plastic recycling. Through these efforts, the company aims to support farmers in enhancing water efficiency and promoting environmental sustainability.
Evergreen
Venture Round in 2016
Evergreen is a plastic recycling and polyester resin production company, originally established in 1998 as a division of Greenbridge. The company focuses on providing a sustainable and reliable supply of high-quality polyester resin, primarily for use in PET strapping. Through its recycling efforts, Evergreen contributes to environmental sustainability by transforming plastic waste into valuable raw materials, thus supporting the circular economy.
Eureka Recycling
Funding Round in 2016
Eureka Recycling is an organization that offers products and services that concentrate on reducing waste through reuse, recycling, and composting. Its goal is to show that waste is avoidable, not inevitable. The group provides answers to the social, environmental, and health issues brought on by garbage through its services, projects, and policy work. It includes a number of programs that include waste reduction, producer responsibility, reuse, recycling, and composting to stop the wasteful loss of economic garbage.
Atlas Organics
Seed Round in 2015
Atlas Organics Inc. is a company that specializes in organics recycling, focusing on the collection and recycling of food and yard waste. Founded in 2013 and headquartered in Spartanburg, South Carolina, Atlas Organics operates in regions including San Antonio, Texas, and various areas in South Carolina, North Carolina, and Tennessee. The company partners with municipalities to collect food waste from various sources such as grocery stores, hospitals, and schools, thereby advancing sustainability initiatives. Atlas Organics transforms this waste into organic compost products suitable for agricultural, landscaping, and home gardening applications. By promoting the "table to farm" movement, Atlas Organics helps its clients achieve their sustainability goals while diverting compostable materials from landfills. The company's composting facilities produce valuable nutrients that enhance soil health, supporting both environmental and agricultural practices.
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