Best Environment Tech Companies in Japan
The 96 best Environment Tech companies in Japan in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: JOLED.
Japan's Environment Tech sector is staking out real ground: 96 companies tracked, $1.8B in disclosed funding, and a global market forecast to climb from $552.1B to $690.3B by 2026 at a 4.6% CAGR. No unicorns yet, but the funding is concentrating fast. PowerX leads at $91M raised, Kyulux sits just behind at $86M, and Ene Coat Technologies has pulled in $34M, which tells you the capital is chasing energy storage and next-gen materials rather than spreading thin. SMBC Venture Capital and Mitsubishi UFJ Capital are the most active backers here, and that institutional weight matters when regulatory pressure from Japan's decarbonization commitments keeps tightening the timeline for private players.
So what's actually moving? Median install growth across environmental and renewables apps is running at roughly +20% YoY, which I'd call a quiet signal that consumer and enterprise demand is pulling ahead of coverage. Hot themes right now are renewable technologies, renewable electricity, and green infrastructure, with the renewable transition framing most of the serious deal conversations this quarter. Coverage of the broader sector is flat, meaning the opportunity gap between what's funded and what's needed is still wide. If you're mapping this space, the action is in the companies building the physical and software infrastructure for Japan's energy shift, not the ones still at the awareness stage.
- DataM Intelligence
Our analysis of 241 Environment Tech companies
$25.6b in tracked funding; 88% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Environment Tech companies in Japan
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | JOLED Developer of OLED-based display panels including printed OLED, oxide TFT displays, and flexible displays | $1.4B | 72 mo ago | 590 | Yoshimasa Ishibashi CEO | — | 1,551 patents Flexible OLED display panels with barrier layers and foldable/rollable form factors | — |
| 2 | PowerX Manufacturer of stationary battery storage systems and related energy services | $91M | 15 mo ago | 47 | Masahiro Ito Founder & CEO | Cart FunctionalityContentfulTurbopack+23 | 41 patents Electric power generation and transmission systems for ships and land vehicles | 1 expansion |
| 3 | Kyulux Provider of OLED lighting systems | $86M | 1 mo ago | 5 | Akira Minakuchi Co-Founder & CFO | WordPressApple iCloud MailGoogle Workspace+23 | 520 patents Organic light‑emitting diodes and related emissive materials for display and lighting | — |
| 4 | QD Laser Developer of nanotech-based quantum dots for energy generation | $50M | 86 mo ago | 58 | — | WordPressMySQLPHP+11 | 196 patents High‑resolution laser projection and ophthalmic imaging systems using semiconductor lasers | — |
| 5 | Ene Coat Technologies Manufacturer and seller of perovskite solar cell | $34M | 16 mo ago | 24 | Takaya Kato Co-CEO & Director | WordPressMySQLPHP+8 | — | — |
| 6 | Jeplan Plastic processing technology developer | $31M | 45 mo ago | 15 | Masaki Takao Co-Founder & CEO | WordPressMySQLPHP+13 | 91 patents Advanced PET chemical recycling and high-purity terephthalate monomer production processes | — |
| 7 | I-Grid Provider of GX solutions, energy trading, and renewable energy platforms | $21M | 34 mo ago | 100 | Tomokazu Akita CEO | WordPressMySQLPHP+21 | 12 patents Quantum algorithm design and optimization for hybrid quantum‑classical machine learning | — |
| 8 | ZeroBoard Provides GHG emissions from corporate activities and the supply chains | $18M | 39 mo ago | — | Tokeji Michitaka CEO | Apple iCloud MailGoogle WorkspaceFroala Editor+28 | 6 patents Business transaction and e‑commerce data processing platforms and methods | 1 launch |
| 9 | Panair Provider of cloud-based solutions for power distribution companies | $18M | 95 mo ago | — | Tatsuhiko Nagoshi Co-Founder & CEO | — | — | — |
| 10 | Skydisc Provider of digital transformation solution for manufacturing industries | $15M | 36 mo ago | 10 | — | WordPressMySQLPHP+23 | — | — |
| 11 | Digital Grid Provider of transmission and distribution management solutions | $12M | 79 mo ago | 47 | Rikiya Abe CEO | Apple iCloud MailGoogle WorkspaceNode.js+19 | — | — |
| 12 | Sensyn Robotics Provider of drone hub, related control software, and inspection solutions | $11M | 71 mo ago | 121 | Takuya Kitamura CEO | HubSpot CMS HubApple iCloud MailGoogle Workspace+15 | 35 patents Patents concentrated in computing, sensing & instrumentation | — |
| 13 | Miraikikai Developer of robots and laser sensors for various industrial applications | $6M | 93 mo ago | 24 | Tohru Miyake Founder & CEO | WordPressMySQLPHP+21 | 39 patents Autonomous robots for cleaning and maintaining solar panel installations. | — |
| 14 | SPACECOOL Manufacturer of optical film | $6M | 17 mo ago | 20 | — | WordPressMySQLPHP+22 | — | — |
| 15 | U-MAP Technology solutions provider for energy insulation | $5M | 42 mo ago | 5 | Kenji Nishitani CEO | — | 18 patents High‑thermal‑conductivity ceramic/resin composites for power‑module heat management | — |
| 16 | Girasol Energy Provider of AI and cloud-based monitoring solutions for photovoltaic plants | $5M | 13 mo ago | 8 | Li Min CEO | STUDIOFirebaseNode.js+11 | — | — |
| 17 | EF Polymer Manufacturer of organic super-absorbent hydrogel for sustainable agriculture | $4M | 8 mo ago | 22 22 → 51 (+132%) | Narayan Gurjar Co-Founder & CEO | WordPressMySQLPHP+19 | — | 1 job opening · 1 award |
| 18 | JCCL Provider of carbon dioxide recovery and recycling solutions | $4M | 20 mo ago | — | Toshiyuki Umehara CEO | — | 11 patents Advanced gas recovery, separation, and CO₂ capture using composite membrane technologies | — |
| 19 | Radiation Watch Developer of smart sensors for radiations solutions | $4M | — | — | Akira Ishigaki Founder | BloggerJavaPython+5 | — | — |
| 20 | Tensor Energy AI-driven platform offering portfolio management solutions for renewable energy operators | $4M | 2 mo ago | 9 | Vincent Filter Founder | SentryApple iCloud MailMicrosoft 365+9 | — | — |
| 21 | aiESG Provider of ESG analysis services with a focus on sustainability | $3M | 14 mo ago | — | Daikichi Seki Co-Founder & CEO | WordPressMySQLPHP+17 | — | 2 launchs |
| 22 | Emulsion Flow Technologies Rare metal recycling solutions | $3M | 27 mo ago | — | Yuji Suzuki Founder & CEO | WordPressMySQLPHP+9 | 8 patents Liquid-liquid extraction and phase‑mixing equipment for chemical processing | — |
| 23 | I & C Cruise Offers customer acquisition services and among other businesses | $2M | 135 mo ago | 80 | Ryosuke Imai CEO & President | OpenSSLApache HTTP ServerAmazon Web Services+7 | — | — |
| 24 | Carbon EX Provider of carbon credit and emissions trading platform | $2M | 15 mo ago | — | Shunsuke Takeda Co-CEO | — | 23 patents Carbon fiber production processes and carbon-based materials for lithium‑ion battery electrodes | — |
| 25 | Pirika Waste collection app provider | $2M | 36 mo ago | — | Fujio Kojima CEO | — | — | — |
| 26 | RECEPTIONIST SaaS-driven visitor management and reception system for organizations | $1M | 99 mo ago | — | Mariko Hashimoto CEO | WordPressMySQLPHP+27 | — | 1 job opening · 1 partnership |
| 27 | LiSTie Recovery of lithium resources from seawater and recycled lithium-ion batteries | $975K | 14 mo ago | — | Tsuyoshi Hoshino CEO | — | — | — |
| 28 | Habitat Offers visitor management solutions | $881K | 54 mo ago | — | Kawasaki Wataru Co-Founder | — | — | — |
| 29 | Sunda Technology Global Provider of sustainable water management solutions for communities in need | $682K | 14 mo ago | — | Aya Tsuboi Co-Founder & CEO | — | — | — |
| 30 | Sustaina Water Production of freshwater from atmospheric moisture | $204K | 30 mo ago | — | Katsuichiro Matsuda CEO | — | — | — |
Top 12 Environment Tech companies in Japan
#1
Series B · Fukuoka, Fukuoka · founded 2015 · 5 employees$85.7Mraised▾
Provider of OLED lighting systems. It offers TADF OLED (Thermally Activated Delayed Fluorescence Organic Light Emitting Diode) technology for display and lighting. The company offers hyper fluorescence OLEDs, which combine TADF and fluorescence emitters to enable highly efficient emission.
- May 2026Series B—
- Sep 2023Series B$1.4M
- Feb 2021Series B$34.3M
- May 2019Series B$31.8M
#2
Series A · Chiyoda City, Tokyo · founded 2021 · 9 employees$3.6Mraised▾
AI-driven platform offering portfolio management solutions for renewable energy operators. It allows users to manage multiple distributed power plants, forecast solar & wind power generation, coordinate power trading, and more.
- Apr 2026Series A$6M
- Mar 2024Seed$3M
- Mar 2022Seed$605.6K
#3
Public · Minato, Tokyo · founded 2021 · 47 employees$91.1Mraised▾
Manufacturer of stationary battery storage systems and related energy services. The company provides large-scale stationary battery solutions and related services. These offerings include battery storage systems, energy services, and charging solutions. The company is also involved in energy-related projects. It develops and deploys grid-connected energy storage solutions for power companies, real estate developers, and logistics firms.
- Mar 2025Series C$21.4M
- Sep 2024Series C$17.3M
- Jan 2024Conventional Debt$64.1M
- Jul 2023Series B$13.3M
#4
Series B · Okinawa, Okinawa · founded 2018 · 22 employees$4.5Mraised▾
Manufacturer of organic super-absorbent hydrogel for sustainable agriculture. This hydrogel, created from eco-waste, retains significant amounts of water, nourishes soil with micronutrients, and improves water retention capacity, boosting crop growth. The product is biodegradable and enhances fertilizer application, reducing water and fertilizer usage. It offers a sustainable solution for farmers seeking improved yields and resource conservation.
- Sep 2025Series B$17.8M
- Apr 2025Series B$6.6M
- May 2023Series A$4.1M
- Apr 2021Seed$359.7K
#5
Series C · Kyoto, Kyoto · founded 2018 · 24 employees$34.2Mraised▾
Ene Court Technologies is engaged in the development of thin-film perovskite solar cell (PSC) and related materials. The product is claimed to have efficiency in generating power under any conditions like high illuminance, without intermediate light intensity and low light intensity. The product is in the development stage.
- Feb 2025Series C—
- Jul 2024Series C$34.2M
- May 2022Series B—
- Apr 2022Seed—
#6
Series B · Bunkyo, Tokyo · founded 2017 · 8 employees$4.6Mraised▾
Provider of AI and cloud-based monitoring solutions for photovoltaic plants. It provides a PPLC sensor that collects data from panels and a PPLC gateway that communicates with the PPLC cloud. The PPLC cloud automatically located abnormal behavior using an AI engine.
- Apr 2025Series B$9M
- Mar 2024Series B—
- Aug 2021Series A$4.6M
#7
Series A · Hakata, Fukuoka-ken · founded 2022$3.3Mraised▾
Provider of ESG analysis services with a focus on sustainability. It provides ESG analysis for each product and service, including human rights-related indicators such as forced labor and child labor. It evaluates sustainability analysis using three layers, mapping, impact evaluation, and scoring.
- Apr 2025Series A—
- Dec 2024Conventional Debt—
- Dec 2024Series A$3.3M
#8
Late Stage · Tokyo, Tokyo · founded 2015 · 590 employees$1.4Braised▾
Developer of OLED-based display panels including printed OLED, oxide TFT displays, and flexible displays. Offerings include display panels developed using technologies such as printed OLED, oxide TFT technology (TAOS), and flexible displays. The displays are claimed to have multiple features such as they are foldable, unbreakable, see-through, flexible, transparent, energy efficient, have better image quality and self-luminance, etc. Target markets include smartphones, wearable devices, medical equipment monitors, laptops, computers, etc.
- Jun 2020PE$280.6M
- Apr 2019PE$228.2M
- Aug 2018PE$425.6M
- Dec 2017PE$441.2M
#9
Series A · Minato City, Tokyo · founded 2021 · 20 employees$5.7Mraised▾
Manufacturer of optical film
- Jan 2025Series A$5.7M
#10
Seed · Minato, Tokyo · founded 2023$2Mraised▾
Provider of carbon credit and emissions trading platform. It facilitates the buying and selling of carbon credits among developers, sellers, traders, and buyers. Its platform enables businesses to reduce their environmental impact and contribute to a sustainable future.
- Mar 2025Seed$2M
#11
Series A · Fukuoka, Fukuoka · founded 2020$4.1Mraised▾
Provider of carbon dioxide recovery and recycling solutions. It is focused on developing carbon dioxide separation and utilization technology solutions to contribute to global CO2 emission reduction.
- Oct 2024Series A$2.7M
- Aug 2023Seed$1.4M
#12
Seed · Aomori, Aomori · founded 2023$975.2Kraised▾
Recovery of lithium resources from seawater and recycled lithium-ion batteries. It focuses on developing sustainable technologies to recover lithium resources from seawater and spent lithium-ion batteries, with the goal of reducing environmental impact and meeting the demand for electric vehicle batteries.
- Mar 2025Seed—
- Jul 2024Seed$975.2K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Environment Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Environmental Monitoring is moving in Japan
A read on the academic research around Environmental Monitoring — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 280 Japan-affiliated papers.
- Korea University17
- National Institute for Environmental Studies17
- Kyoto University14
- The University of Tokyo12
- Hokkaido University11
- Water quality6
- Wireless sensor network6
- Remote sensing5
- Environmental engineering5
- Real-time computing5
- Pollution1→6
- Environmental resource management1→5
- Contamination2→5
- Distribution (mathematics)1→4
- Risk assessment3→7
- Pollution1→4
Where environmental monitoring is researched across Japan
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing environmental monitoring patents in Japan
Japan environmental monitoring patent filing is cooling — 43 filings from 13 assignees (2018–2025), led by Omron Tateisi Electronics, Nippon Telegraph & Telephone, Semiconductor Energy LAB; annual filings 10→2.
- Omron Tateisi Electronics18
- Nippon Telegraph & Telephone12
- Semiconductor Energy LAB6
- Sharp KK3
- Panasonic IP MAN3
- NTT2
- New Cosmos Electric2
- Canon KK1
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.