Best Environment Companies in Tokyo, Japan
The 69 best Environment companies in Tokyo, Japan in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Asuene.
Our analysis of 309 Environment companies
$75.8b in tracked funding; 79% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Environment companies in Tokyo
| # | Company | Last round | Disclosed funding | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Acacia Renewables Developer of wind power plants | — | — | 12 | — | — | — | — | — |
| 2 | besterra Besterra is a construction engineering company that provides services for thermal power, hydropower, wind… | — | — | 145 | Hazuki Yoshino CEO | NginxGoogle Font APISakura Internet+5 | Top 1M | 21 patents Wind turbine tower decommissioning and demolition engineering solutions | — |
| 3 | Canadian Solar Infrastructure Fund Developer of solar energy projects | — | — | — | Hiroshi Yanagisawa CEO | YouTubeBootstrapAmazon Web Services+10 | Top 10M | — | — |
| 4 | dkk-toa corporation DKK-TOA is a manufacturer of environmental measuring equipment and solutions. | — | — | 634 | — | core-jsSlickjQuery+3 | Top 5M | 51 patents Analytical measurement instruments and bioluminescent luciferase-based bioassay technologies | — |
| 5 | DOWA HOLDINGS Provider of waste metal and e-waste recycling company | — | — | — | Akira Sekiguchi CEO & President | — | — | 235 patents Advanced solid-state lithium battery materials and ceramic‑metal composite technologies | — |
| 6 | E3Mobility Provider of zero-emission electric vehicle charging systems, leveraging solar power to directly charge EVs… | — | — | — | Yoshiaki T Founder | — | — | — | — |
| 7 | enbio holdings EnBio Holdings is an environmental services company. | — | — | 95 | — | NginxMicrosoft ClarityGoogle Analytics+7 | Top 10M | — | — |
| 8 | hashimoto sogyo holdings Hashimoto Sogyo Holdings is a wholesaler of plumbing material and housing equipment. | — | — | 1,025 | — | PHPBootstrapAlpine.js+18 | Top 10M | — | — |
Top 12 Environment companies in Tokyo
#1
Series C · Minato City, Tokyo · founded 2018 · 50 employees$26.8Mraised▾
Manufacturer of PV and energy storage system
- Apr 2026Series C$5.4M
- Dec 2025Conventional Debt—
- Aug 2025Series C$21.4M
- Jan 2018Seed—
#2
Series B · Chiyoda City, Tokyo · founded 2021 · 10 employees$6.5Mraised▾
Provider of nuclear energy services
- Apr 2026Series B$16.9M
- Dec 2025Series A$5.6M
- Jul 2025Series A$15M
- Oct 2023Grant (prize money)$43M
#3
Series B · Tokyo, Tokyo · founded 2022 · 12 employees$3.2Mraised▾
Provider water management services
- Feb 2026Series B—
- Nov 2024Series B$786.5K
- Aug 2024Series B—
- Feb 2024Seed$664.3K
#4
Series C · Shinagawa, Tokyo · founded 2019$68.8Mraised▾
Developer of solar energy projects
- Jun 2024Series C$26.7M
- Mar 2023Series B$1.1M
#5
Series A · Chiyoda City, Tokyo · founded 2022$2.4Mraised▾
Provider of environment, carbon neutral, and energy resources services
- Aug 2024Series A$2.4M
#6
Series A · Bunkyo, Tokyo · founded 2020$10.7Mraised▾
株式会社DGキャピタルグループ is a company focused on developing innovative digital grid solutions to support future power grids. They are actively engaged in the development of technologies that aim to revolutionize the electrical power system.
- Feb 2024Series A$10.7M
#7
Series B · Tokyo, Tokyo · founded 2011 · 260 employees$26.3Mraised▾
Looop is in the business of development and sales, installation, construction, management and maintenance of distributed solar power plants. The company is focused in developing clean power using solar and other associated renewable energy sources
- Jun 2020Series B$26.3M
#8
Series A · Tokyo, Tokyo · founded 2014 · 8 employees$8.3Mraised▾
Challenergy is developing a vertical axis wind turbine incorporating the technique behind Magnus force. The final outcome is a vertical axis wind turbine that can utilise wind from all directions, and by using Magnus force it can vary the power generation according to the wind speed by controlling the rotation of the cylindrical blade. Currently under testing as on March, 2017. The company claims that it can withstand very high winds including that of a typhoon.
- Sep 2022Series A$8.3M
#9
Series B · Minato City, Tokyo · founded 1997 · 70 employees$24Mraised▾
Zephyr is a Wind Energy company which designs, manufactures, imports, consults and sells (comprehensive package of installation design, installation, leasing,and maintenance), a range of wind/solar/water power generation equipments and peripherals. The Zephyr brand of wind turbines are used by the company for installations. Zephyr chaired Japan’s “Project Z” R&D consortium, charged with developing the world’s most advanced small wind turbine.
- Apr 2012Series B$8.6M
- May 2010Series B$10.6M
- Sep 2008Series A$4.8M
#10
Seed · Bunkyo, Tokyo · founded 2021$1.3Mraised▾
It is a startup that has developed an innovative AI analysis system for steel scrap. They offer an automatic steel scrap analysis system and a scrap classification system.
- Sep 2023Seed$1.3M
#11
Seed · Shibuya, Tokyo · founded 2021$724.2Kraised▾
Sustineri is a company that provides carbon offset solutions. They offer services such as carbon offset cloud, Susport, and Susport construction. The company has also received funding of 100 million yen.
- May 2023Seed$724.2K
#12
Public · Chuo City, Tokyo · founded 2003 · 219 employees$4.4Mraised▾
Provider of recycling services
- Jan 2014Series A$4.4M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Environment coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Tokyo researches in environmental monitoring
- The University of Tokyo12
- Tokyo Metropolitan Industrial Technology Research Institute3
- Tokyo Metropolitan University3
- Tokyo College of Environment2
- Tokyo University of Technology2
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.