Global Brain

Founded in Tokyo in 1998, Global Brain is a venture capital firm focusing on seed to late-stage investments across various sectors globally. They have invested in over 300 startups, facilitating 25 IPOs and 61 M&As through hands-on support services.

Kaori Akiba

Director

Hidetaka Aoki

Investment Group Partner and Fellow Chief of Space Lab

Tatsunori Arai

Director

Megumi Asatsuma

Director

Anjani Bansal

Partner / India Office Representative

Past deals in GreenTech

Creatura

Series A in 2025
Creatura assists companies in reducing greenhouse gas emissions by generating and distributing carbon credits and promoting the adoption of renewable energy sources.

HIVED

Venture Round in 2024
HIVED specializes in sustainable parcel delivery solutions. It focuses on the middle to final mile, aiming to enhance post-purchase experiences while reducing waste and providing real-time tracking for both shippers and recipients.

Beleaf

Series A in 2024
Beleaf is an Indonesian hydroponic farm based in Bogor. It operates vertical farming systems using hydroponics to grow fresh greens and vegetables with minimal water usage, aiming to reduce its carbon footprint and provide consumers with locally sourced produce.

EneCoat

Series C in 2024
EneCoat Technologies, established in 2018 and headquartered in Kyoto, Japan, specializes in the manufacturing and sale of perovskite solar cells and associated materials. The company focuses on developing and commercializing thin-film solar cell technologies, aiming to generate power even in low-light conditions. EneCoat's mission is to protect the environment and efficiently harness natural energy sources, enabling businesses to conveniently produce energy from solar cells.

Valpas

Seed Round in 2024
Valpas is a company focused on enhancing bed bug safety in the hospitality industry, providing innovative prevention systems that allow hotels to protect their guests and maintain a pest-free environment. Their technology features a bioengineered design that integrates a standard pitfall trap with wireless capabilities, effectively attracting, trapping, and detecting bed bugs while preventing infestations. By adopting Valpas systems, hotels can eliminate the need for harmful pesticides, reducing environmental impact and promoting guest safety. Valpas has garnered positive recognition from a growing number of highly-rated hotels worldwide, making it a trusted choice for both leisure and corporate travelers who prioritize safety in their accommodations. The Valpas label signifies a commitment to guest protection and sustainable practices in the hospitality sector.

nearMe

Series C in 2024
NearMe Inc. is a Tokyo-based company founded in 2017 that specializes in mobile application development for taxi ride-sharing services. The company's platform addresses social inefficiencies by facilitating real-time matching of individuals seeking to travel in the same direction, thereby enabling them to share taxi rides. NearMe's innovative approach aims to enhance the commuting experience, making it more comfortable and efficient for users. Through its technology-driven solution, the company seeks to contribute to a sustainable and enjoyable society by optimizing transportation options for its users.

Pale Blue

Series B in 2024
Pale Blue is a technology company focused on water-based propulsion systems and satellite mobility infrastructure for the aerospace industry. It designs and manufactures thrusters for microsatellites, including water resistojet, water ion, and hybrid propulsion devices. The propulsion systems use water instead of hazardous propellants like hydrazine, supporting sustainable space operations and in-orbit maneuvers for small satellites. The company was founded in 2020 and is based in Kashiwa, Japan.

Vizcab

Series A in 2024
Vizcab is a company based in Lyon, France, specializing in the development of software solutions aimed at addressing low-carbon challenges in the construction industry. It offers a data-driven platform that facilitates the design of low-carbon buildings by enabling users to import 3D models from digital mock-ups and create a comprehensive database of architectural and technical alternatives. The platform employs data visualization techniques to explore design options, fostering creativity and informed decision-making among designers and builders. In addition to its software offerings, Vizcab provides consultancy services and conducts research projects with leading industrialists and designers, focusing on environmental assessment, energy efficiency, and the integration of big data into building practices.

CleanFiber

Venture Round in 2024
CleanFiber, LLC is a manufacturer of cellulose insulation materials designed for use in attics, walls, and floors of both residential and commercial buildings. Founded in 2013 and headquartered in Blasdell, New York, with an additional office in Buffalo, the company specializes in producing high-performance, carbon-negative insulation from recycled corrugated cardboard. This innovative approach not only promotes sustainability but also enables construction companies to build fire-resistant structures while maintaining cost competitiveness. CleanFiber has transitioned from its former name, UltraCell Insulation, LLC, in September 2018, and is currently focused on rapidly scaling up production to meet growing demand in the insulation market.

Windfall Bio

Series A in 2024
Windfall Bio is an innovative company based in San Mateo, California, that addresses climate change by transforming harmful methane emissions into organic fertilizer. Established in 2022, the company utilizes methane-eating microbes to capture methane from various sources, including agriculture, oil and gas, and waste management. This nature-based technology not only reduces the methane footprint of these industries but also improves their operational efficiency and profitability while minimizing the negative environmental impacts associated with synthetic fertilizers. By providing farmers and other producers with the means to convert methane into valuable soil nutrients, Windfall Bio fosters a sustainable agricultural future and contributes positively to environmental conservation. The company is backed by prominent venture capital firms, reflecting its potential to make a significant impact in the fight against climate change.

Ac-Planta

Series A in 2024
Ac-Planta researches, develops, manufactures, and sells biostimulants and agrochemicals based on acetic acid that enhance plant tolerance to heat, drought, and salinity. The company's product Skeepon is designed to promote plant adaptability to harsh conditions across turf, agriculture, and home gardens. Ac-Planta seeks to leverage advances in plant epigenetics to improve crop resilience and performance, supporting higher yields and quality while helping mitigate desertification. The firm serves agricultural and turf markets with a focus on climate-related stress, aiming to provide sustainable solutions for growers. Founded in 2018, the company is based in Bunkyo, Japan.

Caelux

Series A in 2023
Caelux is a renewable energy company based in Pasadena, California, founded in 2014. It specializes in developing and manufacturing perovskite-on-glass technology for the terrestrial solar and commercial space industries. This innovative technology is designed to enhance solar device efficiency while minimizing the amount of semiconducting material required, thereby reducing production costs. Caelux's products improve power production and integrate seamlessly into existing photovoltaic module manufacturing processes, allowing users to lower installed costs and boost overall performance.

Trove

Series E in 2023
Trove is a technology company offering AI-powered tools for professional networking, email management, and a resale platform for brands and retailers. Its mobile email product uses artificial intelligence to reduce inbox overload, surface relationship insights, provide smart notifications, and snooze messages, integrating with existing email services and supporting iOS and Android. In parallel, Trove operates a resale platform that helps brands launch, manage, and scale resale programs, with storefront design, photography, authentication, cleaning and repair, returns processing, non-new inventory management, site building, Shopify integration, and analytics, plus in-store and digital trade-ins and peer-to-peer features. By combining AI-driven relationship mapping with a scalable resale ecosystem, Trove enables brands to deepen engagement, optimize profit, and reach new customers, and holds certification as a B Corporation for its sustainability-focused approach.

Elephantech

Series D in 2023
Founded in Tokyo, Japan in 2014, Elephantech specializes in the manufacturing of electronic circuits. The company's innovative metal inkjet printing technology enables it to produce flexible printed circuit boards sustainably.

Luup

Series D in 2023
Luup, Inc., founded in 2018 and headquartered in Tokyo, Japan, specializes in electric micro-mobility sharing services. The company's primary offering is an app-based service that allows users to rent and return electric kickboards, e-scooters, and e-bikes at various ports across multiple cities including Tokyo, Osaka, Kyoto, and Yokohama. Luup aims to provide a convenient and enjoyable travel experience by enabling customers to pick up and drop off vehicles at different locations through their application.

Biome

Series B in 2023
Biome is a prominent company specializing in image analysis technology, collaborating with the IchiJoho System at Kyoto University. The company has developed a biological information application aimed at promoting biodiversity conservation and creating a profitable society. Its application focuses on remote surveying of living organisms, offering expertise in data analysis and database management. This enables clients to efficiently access essential ecological information, supporting efforts in environmental preservation and sustainable practices.

WasteX

Venture Round in 2023
WasteX operates as an environmental solutions provider for agriculture and industry sectors. It develops and implements end-to-end systems on client farms and facilities, transforming agricultural waste into biochar. This process enhances soil health, boosts operational efficiency, generates additional revenue streams, and significantly reduces clients' carbon footprints.

Connect Earth

Seed Round in 2023
Founded in 2021, Connect Earth is a London-based environmental data company that democratizes access to sustainability data. It offers a carbon tracking API technology to empower individuals and institutions to make sustainable choices by providing transparent insights into the climate impact of daily spending.

Regent

Venture Round in 2023
Regent designs and manufactures electric flying machines, known as seagliders, for coastal transportation. These wing-in-ground-effect craft operate a few meters above water's surface, combining airplane speed with boat operating costs. Seagliders aim to revolutionize regional travel by connecting coastal cities and islands efficiently and sustainably.

nearMe

Series B in 2023
NearMe Inc. is a Tokyo-based company founded in 2017 that specializes in mobile application development for taxi ride-sharing services. The company's platform addresses social inefficiencies by facilitating real-time matching of individuals seeking to travel in the same direction, thereby enabling them to share taxi rides. NearMe's innovative approach aims to enhance the commuting experience, making it more comfortable and efficient for users. Through its technology-driven solution, the company seeks to contribute to a sustainable and enjoyable society by optimizing transportation options for its users.

CleanFiber

Series B in 2023
CleanFiber, LLC is a manufacturer of cellulose insulation materials designed for use in attics, walls, and floors of both residential and commercial buildings. Founded in 2013 and headquartered in Blasdell, New York, with an additional office in Buffalo, the company specializes in producing high-performance, carbon-negative insulation from recycled corrugated cardboard. This innovative approach not only promotes sustainability but also enables construction companies to build fire-resistant structures while maintaining cost competitiveness. CleanFiber has transitioned from its former name, UltraCell Insulation, LLC, in September 2018, and is currently focused on rapidly scaling up production to meet growing demand in the insulation market.

U-Map

Series B in 2022
U-MaP Co., Ltd. is a manufacturer based in Nagoya, Japan, specializing in aluminum nitride (AlN) whiskers designed for thermal management and heat dissipation applications. Established in 2016, the company originates from research initiatives at Nagoya University and focuses on commercializing advanced materials and processing technologies. U-MaP is committed to addressing global challenges in manufacturing by developing conductive materials with high thermal conductivity and insulating properties. This innovative approach aims to enhance product quality and sustainability across various industries, positioning U-MaP as a key player in the development of next-generation industrial materials.

Yanekara

Venture Round in 2022
Yanekara is a technology company that specializes in smart grid solutions and electric vehicle (EV) charging infrastructure. The company has developed the V2X platform, which allows electric vehicles to function as virtual storage batteries, effectively utilizing them as a power storage system. This system is designed to optimize the energy generated from renewable sources, such as solar panels, by matching it with the charging needs of electric vehicles. Yanekara's offerings aim to facilitate energy management and promote carbon neutrality, enabling users to harness renewable energy more efficiently.

AmicaTerra

Series C in 2022
AmicaTerra is a supplier and manufacturer of biomass products aimed at addressing environmental pollution. The company specializes in creating plant-derived, biodegradable fiber ceramic products, including tableware and straws. These items are designed to decompose naturally without releasing toxic chemicals, providing consumers with eco-friendly alternatives to traditional plastic cutlery. By focusing on sustainability, AmicaTerra contributes to reducing waste and promoting a healthier environment.

Clean Energy Connect

Series A in 2022
Clean Energy Connect Co., Ltd. is a Tokyo-based company established in 2020 that specializes in providing renewable energy solutions to corporate clients. The company focuses on generating and delivering green energy while investing in its own generation capacity to ensure a reliable electricity supply without environmental harm. Clean Energy Connect facilitates the transition to renewable energy by connecting distributed energy resources with customers interested in sustainable practices. It offers advisory services to optimize energy solutions, covering everything from implementation to operational methods, and providing cost-effective proposals that help clients seamlessly adopt renewable energy sources.

EneCoat

Series B in 2022
EneCoat Technologies, established in 2018 and headquartered in Kyoto, Japan, specializes in the manufacturing and sale of perovskite solar cells and associated materials. The company focuses on developing and commercializing thin-film solar cell technologies, aiming to generate power even in low-light conditions. EneCoat's mission is to protect the environment and efficiently harness natural energy sources, enabling businesses to conveniently produce energy from solar cells.

Ac-Planta

Venture Round in 2022
Ac-Planta researches, develops, manufactures, and sells biostimulants and agrochemicals based on acetic acid that enhance plant tolerance to heat, drought, and salinity. The company's product Skeepon is designed to promote plant adaptability to harsh conditions across turf, agriculture, and home gardens. Ac-Planta seeks to leverage advances in plant epigenetics to improve crop resilience and performance, supporting higher yields and quality while helping mitigate desertification. The firm serves agricultural and turf markets with a focus on climate-related stress, aiming to provide sustainable solutions for growers. Founded in 2018, the company is based in Bunkyo, Japan.

Girasol Energy

Seed Round in 2021
Founded in Tokyo, Japan in 2017, Girasol Energy develops an IoT platform for photovoltaic plants. It installs sensor networks, collects data at the panel level via its cloud engine, and uses AI to automatically detect anomalies. The company's exclusive technology leverages satellite-based solar radiation statistics, enabling it to offer services at a significantly lower price compared to competitors.

Pale Blue

Series A in 2021
Pale Blue is a technology company focused on water-based propulsion systems and satellite mobility infrastructure for the aerospace industry. It designs and manufactures thrusters for microsatellites, including water resistojet, water ion, and hybrid propulsion devices. The propulsion systems use water instead of hazardous propellants like hydrazine, supporting sustainable space operations and in-orbit maneuvers for small satellites. The company was founded in 2020 and is based in Kashiwa, Japan.

Girasol Energy

Series A in 2021
Founded in Tokyo, Japan in 2017, Girasol Energy develops an IoT platform for photovoltaic plants. It installs sensor networks, collects data at the panel level via its cloud engine, and uses AI to automatically detect anomalies. The company's exclusive technology leverages satellite-based solar radiation statistics, enabling it to offer services at a significantly lower price compared to competitors.

Agrimedia

Venture Round in 2021
Agrimedia is a facilities provider that focuses on connecting urban residents with agricultural opportunities through farm renting and recruitment for producers. The company specializes in matching idle farmland in suburban areas with individuals looking to engage in farming activities. By offering accessible farm rentals, Agrimedia aims to revitalize underutilized farmland, addressing challenges such as the aging farmer population and the increasing amount of unused land. This approach allows city residents to easily own and operate farms, fostering a closer relationship between urban communities and agricultural practices.

Enlighted

Series C in 2017
Enlighted develops and supplies integrated lighting and environmental control solutions for commercial buildings. Its sensor platform collects occupancy, ambient light, temperature, and energy usage data, which is aggregated by the Gateway and visualized through the Energy Manager web interface. The company also offers a wall‑mounted Room Control device that lets occupants adjust lighting levels and configurations. Enlighted’s analytics help clients reduce energy consumption—often by up to 70%—while improving workspace comfort and operational efficiency. Since its founding in 2009, the company has installed sensors in more than 70,000 square feet of Fortune 1000 premises, including AT&T and Oracle. Enlighted is headquartered in Sunnyvale and operates as a subsidiary of Siemens Industry.

NBT

Series D in 2015
NBT specializes in the development of wind farms in the field of renewable energy in emerging markets.

Awair

Seed Round in 2015
Awair is a technology company that develops indoor air quality monitoring devices and a software platform that provides actionable insights to improve indoor environments. Its sensors measure temperature, humidity, CO2, volatile organic compounds, and particulate matter, delivering real‑time data to homeowners, schools, and workplaces. The platform aggregates the data, offers recommendations, and helps users reduce exposure to pollutants, thereby supporting health and cognitive performance. Awair is headquartered in San Francisco and has an additional office in Seoul.

Solestial

Solestial develops radiation‑hardened silicon photovoltaic modules for space applications. Its ultra‑thin, flexible solar cells self‑repair radiation damage at normal operating temperatures, allowing panels to maintain performance for up to ten years in low Earth orbit. The modules are produced with automated manufacturing, reducing costs by about 90% compared to existing space‑grade technologies while enabling virtually unlimited production capacity. Solestial’s technology supports current satellite constellations, research missions, and future large‑scale space energy infrastructure, positioning the company as a key supplier for the emerging space economy.

SUN METALON

SUN METALON specializes in decarbonizing metal manufacturing by offering innovative technology for recycling, refining, and forming metals. Its core innovation lies in efficient heating of metal scraps and chips, reducing energy consumption and impurities, thereby significantly lowering CO₂ emissions compared to traditional methods.
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