D3 Jubilee Partners

D3 Jubilee, with headquarters in Seoul and San Francisco, focuses on impact investment aimed at fostering entrepreneurial innovation that enhances the lives of low-income families, women, and immigrants while promoting environmental sustainability. The firm specializes in investing in information and communication technology (ICT) start-ups that demonstrate significant socio-environmental value, particularly in low-income regions including Korea, the United States, South America, Africa, and India. By redefining the role of capital, D3 Jubilee seeks to create positive social change and improve living conditions for underserved communities across the globe.

Doug Lee

Founder and CEO

Dukjun Lee

General Partner

Past deals in Recycling

RECO

Series C in 2025
RECO is a waste management platform that combines digital solutions and customized waste hauling services. They provide optimal waste management solutions for each business site. Their services include improving the emission environment, waste collection and transport, management automation, and resource circulation. They manage the entire process, from waste disposal to final treatment. It offers dedicated software (web/app) to assist with waste management automation. The software can easily manage all tasks, from monitoring emissions data to checking real-time rates and waste reporting documents, reducing work hours.

Beyond Technology Engineering

Venture Round in 2024
Beyond Technology Engineering is an energy company that provides carbon-neutral energy recycling solutions.

Green Mineral

Series A in 2023
Green Mineral is a mineral recycling company focused on addressing pollution through innovative technology. The company specializes in the environmentally friendly and cost-effective recycling of metals, particularly lithium. Utilizing a bio-mineralization technique, Green Mineral extracts lithium without relying on traditional organic solvents, thereby minimizing environmental impact. This approach not only promotes sustainable waste management but also helps clients optimize their recycling processes. Through its commitment to eco-friendly practices, Green Mineral aims to contribute to a cleaner and more sustainable future.

Green Mineral

Venture Round in 2023
Green Mineral is a mineral recycling company focused on addressing pollution through innovative technology. The company specializes in the environmentally friendly and cost-effective recycling of metals, particularly lithium. Utilizing a bio-mineralization technique, Green Mineral extracts lithium without relying on traditional organic solvents, thereby minimizing environmental impact. This approach not only promotes sustainable waste management but also helps clients optimize their recycling processes. Through its commitment to eco-friendly practices, Green Mineral aims to contribute to a cleaner and more sustainable future.

Beyond Technology Engineering

Seed Round in 2022
Beyond Technology Engineering is an energy company that provides carbon-neutral energy recycling solutions.

Beyond Technology Engineering

Venture Round in 2022
Beyond Technology Engineering is an energy company that provides carbon-neutral energy recycling solutions.

RECO

Series B in 2021
RECO is a waste management platform that combines digital solutions and customized waste hauling services. They provide optimal waste management solutions for each business site. Their services include improving the emission environment, waste collection and transport, management automation, and resource circulation. They manage the entire process, from waste disposal to final treatment. It offers dedicated software (web/app) to assist with waste management automation. The software can easily manage all tasks, from monitoring emissions data to checking real-time rates and waste reporting documents, reducing work hours.

RECO

Series A in 2021
RECO is a waste management platform that combines digital solutions and customized waste hauling services. They provide optimal waste management solutions for each business site. Their services include improving the emission environment, waste collection and transport, management automation, and resource circulation. They manage the entire process, from waste disposal to final treatment. It offers dedicated software (web/app) to assist with waste management automation. The software can easily manage all tasks, from monitoring emissions data to checking real-time rates and waste reporting documents, reducing work hours.

Repla

Venture Round in 2021
Repla is a plastic recycling company focused on developing technology to decompose and recycle plastics. The company produces a plastic waste decomposition tank and a recycled resin purity tester, and works on industrializing plastic-degrading microorganisms. Its technology aims to selectively treat small amounts of foreign substances so that, even with mixed plastics, only a single plastic material is discharged, enabling customers to decompose and recycle plastics more efficiently.

Repla

Seed Round in 2020
Repla is a plastic recycling company focused on developing technology to decompose and recycle plastics. The company produces a plastic waste decomposition tank and a recycled resin purity tester, and works on industrializing plastic-degrading microorganisms. Its technology aims to selectively treat small amounts of foreign substances so that, even with mixed plastics, only a single plastic material is discharged, enabling customers to decompose and recycle plastics more efficiently.

Recarbon

Series B in 2019
Recarbon is a technology company that develops a commercialization-ready process to recycle waste CO2 from flue gas by adding methane and using microwave plasma to convert the gases into hydrogen and carbon monoxide. It builds proprietary plasma generation systems that transform industrial carbon emissions into usable industrial gases, enabling sectors such as steel and cement to lower emissions while producing renewable energy and other value streams. Founded in 2011 and based in Santa Clara, California, the company focuses on advancing carbon transformation technology to support a more sustainable, circular economy.
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