Circular Economy Startups

Greenspark supports ethical recycling ecosystems in coastal communities, funding plastic collection efforts that provide economic opportunities for the people involved. The initiative addresses ocean plastic pollution through community-based recycling programs.

4 investors

Infinite Roots cultivates mycelium (mushroom roots) via liquid fermentation using natural side streams such as brewers' spent grain, turning it into protein-, fiber-, and vitamin-rich culinary ingredients. The company operates in the alternative protein and sustainable foodtech category, producing meat and food alternatives for consumer meals and dining.

4 investors

JEPLAN is a Japanese group focused on recycling and circular economy, working with domestic and international partners under the mission of "circulating all things." It aims to advance a circular economy through recycling technologies and operations across its business sites and factories.

4 investors

JUST Water sells spring water and flavored sparkling water ("Bubbles") in plant-based and aluminum packaging, sold direct-to-consumer in multi-pack cases. Its lineup includes still spring water and carbonated flavors such as strawberry, watermelon, cucumber, and valencia orange in the beverage category.

4 investors

LanzaTech converts carbon-rich gases from industrial sources like steel mills and landfills into fuels and chemicals using synthetic biology. The company serves heavy industries seeking to reduce emissions and create value from waste streams.

4 investors

Le Fourgon is a home grocery delivery service selling drinks and pantry goods in 100% reusable, deposit-return (consignée) containers, with daily electric-vehicle delivery and collection of empty containers. It serves households across more than 2500 towns in France and Belgium.

4 investors

Lineat develops Aligned Formable Fibre Technology (AFFT™), producing uni-directional tapes that recycle and re-use carbon fibre across multiple cycles. The technology targets composite manufacturers, offering formability and a lower carbon footprint in the composite materials industry.

4 investors

LiquiDonate provides a donation-based disposition service that matches retailers' and brands' warehouse overstock and unsellable returns to a vetted network of 501(c)(3) nonprofits, handling fulfillment, tax documentation, and impact reporting. It positions donation as an alternative to liquidation and landfill disposal for retail excess inventory, offering products WarehouseDirect for bulk overstock and ReturnsDirect for intercepting unsellable returns.

4 investors

Lucent Bio develops sustainable crop nutrition products, including its flagship Soileos micronutrient fertilizer made by upcycling pea, lentil, and oat hulls from food processing. The company serves farmers and food processors in the agri-food sector, with a focus on Canadian agriculture.

4 investors

MyKor is a female-founded company with a team experienced in construction, manufacturing, materials science, engineering and biotechnology. It operates across three sites in the UK and Portugal.

4 investors

P2 Science develops green chemistry platform technologies (including its PIOz ozonolysis and PICE polymerization processes) that convert renewable, plant-based oils into functional intermediates, specialty ingredients, and polymers. Its products serve the flavors, fragrances, and beauty/cosmetics industries, with R&D in Woodbridge, CT and manufacturing in Naugatuck, CT.

4 investors

PACT develops earth-positive biomaterials for the fashion industry, scaling them up for supply to partner brands. The company runs a research and development laboratory and pilot facilities where scientists, engineers and designers create sustainable materials.

4 investors

Afterlife Ag collects food scraps from restaurants and food establishments and upcycles them to cultivate over 20 species of fresh, locally grown mushrooms. The company operates in the circular economy and agtech space with a focus on reducing food waste and greenhouse gas emissions.

4 investors

pH7 Technologies develops a proprietary electrochemical closed-loop process for extracting critical metals and minerals — including platinum group metals, gold, copper, and tin — from primary and secondary resources with lower energy, water, and environmental impact. It serves miners, recyclers, and industrial operators supporting the transition to renewable energy and electrification.

4 investors

Plenti offers subscription-based rental of consumer electronics and equipment (such as VR headsets, projectors, drones, gaming devices, and cleaning machines) with a fixed monthly fee that lets customers swap devices, and includes delivery, protection, and returns. It also provides equipment rental services for business events in Poland.

4 investors

Polymateria develops a proprietary "biotransformation" technology that makes conventional plastic packaging biodegradable, breaking it down into an earth-friendly wax if it escapes into the environment and is not recycled first. Its product Lyfecycle is a time-controlled self-destructing plastic aimed at reducing plastic pollution.

4 investors

Poseidona develops sustainable protein ingredients derived from recovered seaweeds, including agar-industry sidestreams and invasive algae, using a proprietary processing technology it is patenting. The ingredients are aimed at food product manufacturers seeking lower-environmental-impact alternatives to land-grown protein sources.

4 investors

ElectraMet builds electrochemical wastewater treatment systems for metal recovery, oxidant abatement, and acid reuse, serving industrial customers in sectors such as mining and microelectronics. The company offers feasibility testing, onsite pilots, and commercial systems that integrate with site management or SCADA systems to meet discharge compliance and sustainability goals.

4 investors

Protix produces insect-based ingredients from black soldier flies, converting organic food waste into protein and nutrients used for animal feed, pet food, plant care, and insect farming. It serves feed and farming manufacturers seeking lower-footprint, sustainable nutrition alternatives to poultry meal, fish meal, and soy.

4 investors

Rebag is an online marketplace for luxury designer goods, including handbags, accessories, watches, jewelry, apparel, and shoes with options to buy and sell pre-owned items.

4 investors

Rebundle makes plant-based braiding hair using patented technology that repurposes discarded banana stems into non-toxic, itch-free synthetic hair. The product is marketed to consumers as a scalp-safe and more sustainable alternative for protective styles like braids.

4 investors

Refurbed operates a marketplace for refurbished electronics, where devices are reconditioned through a multi-step process and sold to consumers as more environmentally sustainable alternatives to new products. The company supports environmental initiatives including e-waste recycling, carbon removal, and reforestation as part of its circular economy model.

4 investors

Releaf Earth produces biochar from organic and agricultural waste in Nigeria, providing carbon sequestration, improved soil fertility, and rural jobs. It positions itself as Nigeria's first industrial biochar producer serving smallholder farmers and carbon-removal markets across Africa.

4 investors

Replenysh provides software and managed services for reverse logistics and circular supply chains, routing material flows across networks of processors, carriers, and end markets with automated verification and cost optimization.

4 investors