Radar · Energy in Tokyo
Best Energy Companies in Tokyo, Japan
The 113 best Energy companies in Tokyo, Japan in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Asuene.
By Rohit KhannaTrends & Stories
113companies tracked
$329.5Mdisclosed funding
0unicorns
26have raised
FLIAR INTELLIGENCE · ENERGY × TOKYO
Our analysis of 441 Energy companies
$135.1b in tracked funding; 76% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
441companies analysed
76%cloud-native stacks
2025funding peak (by rounds)
8unicorns
2013median founding year
218kcombined LinkedIn audience
93%of audience held by top 3
1companies hiring publicly (12 mo)
Ranked: Best Energy companies in Tokyo
| # | Company | Disclosed funding | Last round | Employees | Founded | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Asuene Developer of solar energy projects | $69M | 24 mo ago | — | 2019 | Keihiro Iwata Co-Founder | — | 3 patents Software platforms for greenhouse gas emissions monitoring and management | — |
| 2 | Clean Energy Connect Limited information available | $30M | 12 mo ago | 2 | 2020 | — | WordPressMySQLPHP+20 | — | — |
| 3 | Sharing Energy Manufacturer of PV and energy storage system | $27M | 2 mo ago | 50 | 2018 | Kazuyuki Uemura CEO | WordPressMySQLPHP+14 | — | — |
| 4 | Looop Distributed solar power plant developer | $26M | 71 mo ago | 260 | 2011 | Soichro Nakamura Founder & CEO | microCMSApple iCloud MailGoogle Workspace+17 | — | — |
| 5 | Zephyr Manufacturer of wind turbines and developer of wind energy projects | $24M | 170 mo ago | 70 | 1997 | Masaya Kubo CEO | WordPressMySQLPHP+16 | 30 patents Control systems and hardware for wind turbine power generation and optimization | — |
| 6 | TRENDE Developer of renewable energy solutions and electricity trading platforms | $23M | 12 mo ago | 12 | 2017 | Ken Seno Co-Founder & Director | WordPressMySQLPHP+16 | — | — |
| 7 | UPDATER Supplier of electricity | $20M | 56 mo ago | 286 | 2011 | Tsukasa Oishi CEO | PHPDebianGSAP+23 | — | — |
| 8 | WASSHA Energy storage systems marketing and consulting services provider | $19M | 48 mo ago | 202 | 2013 | Satoshi Akita Founder & CEO | WordPressMySQLPHP+16 | — | 1 job opening |
| 9 | enechain Provider of energy marketing services | $14M | 4 mo ago | 55 | 2019 | Ryo Nozawa Founder & CEO | STUDIOFirebaseNode.js+12 | — | 1 launch · 1 partnership |
| 10 | Aeterlink Supplier of electricity | $13M | 15 mo ago | 18 | 2020 | — | WordPressApple iCloud MailGoogle Workspace+18 | 87 patents Wireless power transfer systems and antenna/receiver technologies for efficient energy harvesting. | — |
| 11 | REXEV Manufacturer of batteries | $13M | 56 mo ago | — | 2019 | Takashi Fujii Co-Founder | WordPressMySQLPHP+20 | — | — |
| 12 | DG Capital Group Provider of digital grid solutions for supporting future power grids | $11M | 28 mo ago | — | 2020 | Rikiya Abe CEO & Director | NginxXserverGoogle Workspace | 4 patents Autonomous distributed control and interconnection for DC microgrid systems | — |
| 13 | Challenergy Vertical axis wind turbine developer | $8M | 44 mo ago | 8 | 2014 | Atsushi Shimizu Founder & CEO | WordPressMySQLPHP+15 | 20 patents Magnus‑effect thrust generators for wind, hydro and tidal power conversion | — |
| 14 | ENECHANGE Provider of energy platform development and energy data analysis services | $8M | 112 mo ago | 216 | 2015 | Atsuo Shiraki Co-Founder & CTO | WordPressApple iCloud MailGoogle Workspace+30 | — | — |
| 15 | Ubiden Provider of electric vehicle charging services | $7M | 10 mo ago | — | 2019 | Shuhei Onishi Co-Founder | DudaNginxSnowplow Analytics+13 | 14 patents Integrated energy management and payment processing systems for electric vehicles | — |
| 16 | Helical Fusion Provider of nuclear energy services | $6M | 1 mo ago | 10 | 2021 | Junichi Miyazawa Co-Founder | WixSentryEnvoy+12 | 8 patents Magnetic‑confinement fusion reactor structures and superconducting cable protection materials | 1 award |
| 17 | Toshiba Manufacturer and marketer of advanced electronic and electrical products | $6M | 13 mo ago | 1,328 | 1985 | — | HCL Digital ExperienceApple iCloud MailJava+25 | 106,846 patents Patents concentrated in electrical & electronics | — |
| 18 | Albatross Technology Developer of marine energy projects | $3M | 30 mo ago | 5 | 2011 | Hiromichi Akimoto CEO | WordPressMySQLPHP+17 | 18 patents Wave energy conversion using drag‑type bucket turbines for marine power generation | — |
| 19 | Enerbank Supplier of electricity | $1M | 6 mo ago | 3 | 2018 | Yugo Sato Co-Founder | WordPressMySQLPHP+17 | — | — |
| 20 | Green Earth Institute Developer of fermentation production technology using biomass | $976K | 99 mo ago | 46 | 2011 | — | PleskGoogle MapsNginx+7 | — | — |
Top 12 Energy companies in Tokyo
#1
Series C · Minato City, Tokyo · founded 2018 · 50 employees$26.8Mraised▾
Series C · Minato City, Tokyo · founded 2018 · 50 employees
Manufacturer of PV and energy storage system
Funding rounds
- Apr 2026Series C$5.4M
- Dec 2025Conventional Debt—
- Aug 2025Series C$21.4M
- Jan 2018Seed—
Founders & team
Investors
Energy & Environment Investment, Mizuho Bank, Hokkoku Bank, Chiba Bank, Sumitomo Mitsui Trust Bank, JIC Venture Growth Investments
Tech stack
FirebaseGoogle AnalyticsGoogle CloudGoogle Cloud CdnGoogle Font ApiGoogle Tag Manager
#2
Series B · Chiyoda City, Tokyo · founded 2021 · 10 employees$6.5Mraised▾
Series B · Chiyoda City, Tokyo · founded 2021 · 10 employees
Provider of nuclear energy services
LinkedIn Pulse recent public activity · Jul 2026
Audience: 3k LinkedIn followers
Activity: 1 awards announced in 12 mo
Funding rounds
- Apr 2026Series B$16.9M
- Dec 2025Series A$5.6M
- Jul 2025Series A$15M
- Oct 2023Grant (prize money)$43M
Founders & team
Investors
Sony Innovation Fund, Plug and Play Tech Center, SBI Investment, SBIR, Toyoda Gosei, Keio Innovation Initiative
Tech stack
BootstrapGoogle CloudGoogle Cloud CdnGoogle WorkspaceGsapHsts
#3
Series B · Minato, Tokyo · founded 2019 · 55 employees$14Mraised▾
Series B · Minato, Tokyo · founded 2019 · 55 employees
Provider of energy marketing services
LinkedIn Pulse recent public activity · Jul 2026
Audience: 1k LinkedIn followers
Activity: 1 product launches · 1 partnerships (incl. Xpansiv CBL) announced in 12 mo
Funding rounds
- Jan 2026Series B$32.4M
- Jan 2022Series A$14M
Founders & team
Investors
DCM Ventures, Minerva Growth Partners, Coreline, Soros Capital Management
Tech stack
FirebaseGoogle AnalyticsGoogle CloudGoogle Cloud CdnGoogle Font ApiGoogle Tag Manager
#4
Series D · Shinagawa, Tokyo · founded 2020 · 2 employees$29.9Mraised▾
Series D · Shinagawa, Tokyo · founded 2020 · 2 employees
Limited information available
Funding rounds
- Jun 2025Series D$29.9M
- Apr 2024Series C—
- Aug 2022Seed—
Investors
KDDI, Global Brain, Energy & Environment Investment, JIC Venture Growth Investments, 1 investment fund, K4 Ventures GK
Tech stack
All In One SeoAmazon Web ServicesCdnjsCloudflareContact Form 7Core-Js
#5
Series C · Chiyoda City, Tokyo · founded 2017 · 12 employees$23.1Mraised▾
Series C · Chiyoda City, Tokyo · founded 2017 · 12 employees
Developer of renewable energy solutions and electricity trading platforms. It offers solar power systems, electricity retail services, and a platform for peer-to-peer energy trading. The company also conducts research and development in next-generation electricity systems, collaborating with universities and corporations. Its services aim to facilitate sustainable energy consumption and improve quality of life through innovative technology. It develops and provides electricity retail systems utilizing IoT and AI technologies.
Funding rounds
- Jun 2025Series C—
- Mar 2025Series B$7.2M
- Jun 2020Series B$9.3M
- Sep 2018Series A$6.6M
Founders & team
Investors
ITOCHU, TEPCO Ventures, Showa Shell Sekiyu KK, DEWA, Tokyo Century, ZEN-NOH
Tech stack
Amazon Web ServicesApache Http ServerContact Form 7Google AnalyticsGoogle Font ApiGoogle Hosted Libraries
#6
Series C · Minato, Tokyo · founded 2019$6.7Mraised▾
Series C · Minato, Tokyo · founded 2019
Provider of electric vehicle charging services
Funding rounds
- Jul 2025Series C$6.7M
- Nov 2023Series B—
- Apr 2023Series B—
Founders & team
Investors
Kawamura Electric Industry, Panasonic, Tokyu Land, FUSO, Sparks Asset Management, Energy & Environment Investment
Tech stack
DudaGoogle AnalyticsGoogle WorkspaceHstsJqueryJquery Migrate
#7
Series B · Chiyoda City, Tokyo · founded 2020 · 18 employees$13.3Mraised▾
Series B · Chiyoda City, Tokyo · founded 2020 · 18 employees
Supplier of electricity. It manufacturing, sales, import and export of wireless elements, antennas, high-frequency products and related equipments. It provides wireless power transfer systems.
LinkedIn Pulse recent public activity · Jul 2026
Audience: 1k LinkedIn followers
Activity: 2 awards announced in 12 mo
Funding rounds
- Feb 2025Series B$12M
- Feb 2025Venture Debt$6.7M
- May 2024Series B$13.3M
Investors
Keio Innovation Initiative, ITV, JAFCO Group, Sparks Asset Management, Mizuho Capital, Sumitomo Mitsui Banking Corporation
Tech stack
Amazon Web ServicesApple Icloud MailCdnjsCloudflareGoogle AnalyticsGoogle Font Api
#8
Acquired · Tokyo, Tokyo · founded 1985 · 1328 employees$6Mraised▾
Acquired · Tokyo, Tokyo · founded 1985 · 1328 employees
Toshiba is a Japanese conglomerate working in diversified products. Toshiba's semiconductor portfolio includes memory, ASICs, Sensors, diodes, microcontrollers, logic ICs, and wireless equipment. It can be used in industrial, business, energy, retail, and semiconductors feed.
LinkedIn Pulse recent public activity · Jul 2026
Audience: 188k LinkedIn followers — 85.9% of this cohort's audience
Funding rounds
- Apr 2025Grant (prize money)$1.5M
- Mar 2021Grant (prize money)$365.1K
- Sep 2019Grant (prize money)$1.5M
- Jun 2019Grant (prize money)$339.5K
Investors
Europa, OSTI
Tech stack
AccessibeAmazon SesAmazon Web ServicesApache Http ServerApple Icloud MailAxios
#9
Series B · Chuo City, Tokyo · founded 2018 · 3 employees$1.4Mraised▾
Series B · Chuo City, Tokyo · founded 2018 · 3 employees
Supplier of electricity
LinkedIn Pulse recent public activity · Jul 2026
Audience: 30 LinkedIn followers
Funding rounds
- Nov 2025Series B$5.2M
- Dec 2024Series B$3.9M
- Oct 2022Series A$1.4M
- Jul 2020Seed—
Founders & team
Investors
Genesia Ventures, Spiral Capital, Sumitomo Mitsui Banking Corporation, JIC Venture Growth Investments, Nippon Venture Capital, Akigin Capital Partners
Tech stack
Apache Http ServerGoogle AnalyticsGoogle Font ApiGoogle Hosted LibrariesGoogle Sign-InGoogle Tag Manager
#10
Series C · Shinagawa, Tokyo · founded 2019$68.8Mraised▾
Series C · Shinagawa, Tokyo · founded 2019
Developer of solar energy projects
LinkedIn Pulse recent public activity · Jul 2026
Audience: 8k LinkedIn followers — 3.7% of this cohort's audience
Funding rounds
- Jun 2024Series C$26.7M
- Mar 2023Series B$1.1M
Founders & team
Investors
Sony Innovation Fund, GMO Venture Partners, GLIN Impact Capital, Sumitomo Mitsui Banking Corporation, SBI Investment, Sparks Asset Management
#11
Series A · Bunkyo, Tokyo · founded 2020$10.7Mraised▾
Series A · Bunkyo, Tokyo · founded 2020
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.
Funding rounds
- Feb 2024Series A$10.7M
Founders & team
Tech stack
Google WorkspaceNginxXserver
#12
Series C · Tokyo, Tokyo · founded 2013 · 202 employees$19.1Mraised▾
Series C · Tokyo, Tokyo · founded 2013 · 202 employees
WASSHA is involved in the marketing of energy storage systems and other utility electronic gadgets in Tanzania. Provides smartphones, solar panels & rechargeable LED lights on a rental or leases basis through kiosks. Claims to developing rural electrification project by using digital electrical technology. Also, assists individuals in setting-up power storage systems retailing shops.
LinkedIn Pulse recent public activity · Jul 2026
Audience: 6k LinkedIn followers — 2.6% of this cohort's audience
Hiring: 2 hiring posts in 12 mo (public) · momentum +0 · hiring: Regional Operations Leader, Information and Systems Officer
Funding rounds
- Jun 2022Series C$8.5M
- Oct 2016Series A$2.9M
- Series A$7.7M
Founders & team
Investors
NEC Capital Solutions, Development Bank of Japan, UTEC, Mistletoe, Yamaha Motor, Daikin
Tech stack
Google AnalyticsGoogle Hosted LibrariesGoogle MapsGoogle WorkspaceJqueryMonsterinsights
Funding & investor landscape
$329.5Mtotal disclosed funding
20companies funded
47disclosed rounds
2rounds last 90 days
Most active investors
Notable founders
Kazuyuki Uemura
CEO · Sharing Energy
Junichi Miyazawa
Co-Founder · Helical Fusion
Takuya Goto
Co-Founder · Helical Fusion
Ryo Nozawa
Founder & CEO · enechain
Ken Seno
Co-Founder & Director · TRENDE
Jeffrey Char
Co-Founder & Chairman · TRENDE
Shuhei Onishi
Co-Founder · Ubiden
Tatsuro Shiraishi
Co-Founder · Ubiden
Yugo Sato
Co-Founder · Enerbank
Kenichi Muranaka
CEO · Enerbank
Keihiro Iwata
Co-Founder · Asuene
Kohei Nishiwada
Co-Founder · Asuene
Prism market signals · Japan · country-scoped Prism corpus, 2,047,787 docs
Market landscape — 10 sub-themes by coverage
Share of Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
RESEARCH IN TOKYO · Energy
How research on Energy Storage in Tokyo is moving
A read on the academic research around Energy Storage in Tokyo — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 140 papers.
The University of Tokyo and Tokyo Institute of Technology lead Tokyo's optimistic battery materials and supercapacitor research, dominated by advancement-focused studies with minimal concern.
140 papers · stance +0.54 · 26% breakthrough · 7% concern
top institutions
- The University of Tokyo64
- Tokyo Institute of Technology26
- Tokyo University of Science21
- Tokyo University of Agriculture and Technology11
- Tokyo Denki University6
leading researchers
Atsuo Yamada · Hirofumi Akagi · Jumpei Baba · Muhammad Aziz · Nobuyuki Yamaguchi · Shinichi Komaba
prism intelligence · tone & topics
94% positive · 3% critical tone
BusinessEnvironmentElectronicsTransportationSustainabilityMaterials Science
▲
Breakthroughs33 · 24%
▼ 44%→21% share
▼0.5× share momentum5 median citations76% since 2021mostly methods-led
Electrolyte research is intensifying — papers doubled from 3 to 6 while Optoelectronics emerged as a brand-new electrode-materials frontier.
rising sub-themes (early→recent)
- Battery (electricity)2→6
- Electrode1→5
- Electrolyte3→6
- Electrochemistry1→4
- Anode2→4
Newly emergingOptoelectronics 0→4
Landmark Electrochemical Na Insertion and Solid Electrolyte Interphase for Hard‐Carbon Electrodes and Application to Na‐Ion Batte · 2,043 cites
◆
Advancements87 · 62%
▲ 50%→65% share
▲1.3× share momentum0 median citations86% since 2021mostly methods-led
Renewable energy integration is surging — grid and photovoltaic system papers jumped from 1 to 11 and 14 respectively.
rising sub-themes (early→recent)
- Renewable energy4→23
- Battery (electricity)2→20
- Photovoltaic system1→14
- Grid1→11
- Power (physics)1→11
Newly emergingElectricity 0→10 · Environmental economics 0→7 · Energy (signal processing) 0→5
Landmark Research Development on K-Ion Batteries · 1,273 cites
▼
Concerns9 · 6%
▲ 6%→7% share
▲1.2× share momentum0 median citations89% since 2021mostly empirical
Battery disposal concerns are newly emerging — Battery, Solar energy, and Reuse risk topics all appeared fresh with 11 combined papers.
rising sub-themes (early→recent)
- Battery (electricity)5
- Solar energy3
- Reuse3
- Renewable energy3
- Photovoltaic system2
Newly emergingBattery (electricity) 0→5 · Solar energy 0→3 · Reuse 0→3
Landmark New Materials and New Configurations for Advanced Electrochemical Capacitors · 367 cites
Common questions
How many Energy companies are there in Tokyo, Japan?
Radar tracks 113 indexable Energy companies headquartered in Tokyo, Japan that meet our profile-completeness bar.
What is the total funding raised by Energy companies in Tokyo, Japan?
The Energy companies in Tokyo, Japan on this list have raised a combined $329.5M in disclosed equity funding across 20 funded companies.
Which is the highest-funded Energy company in Tokyo, Japan?
Asuene is the highest-funded Energy company in Tokyo, Japan, with $68.8M in disclosed equity funding.
How many Energy companies in Tokyo, Japan are funded?
20 of the 113 Energy companies in Tokyo, Japan on this list have disclosed at least one equity funding round.
How many Energy unicorns are there in Tokyo, Japan?
None of the Energy companies in Tokyo, Japan on this list currently has a disclosed valuation of $1B or more.
Who are the top investors in Tokyo, Japan Energy companies?
The most active investors in Tokyo, Japan Energy companies on this list include Energy & Environment Investment, Mitsubishi UFJ Capital, JAFCO Group, HILL HOUSE, Mirai Creation Fund.
Rohit KhannaTrends & Stories
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.