Industry landscapes
The companies, capital and talent shaping energy in Japan. Find the leaders. Understand the segments. See where the activity is.
An industry ecosystem,
measured in context.
24 featured companies from the funding, hiring, revenue and team-size leaderboards.
Locked revenue figures are available in Radar; the eight company financial previews stay the same throughout this page. A dash means the figure is outside these featured lists. Revenue years vary by company; the figures are not a like-for-like revenue comparison. Compare annual accounts ↗
No company example met every recorded classification, independence and public-profile gate in this snapshot. The live directory may have newer qualifying companies.
Explore classified startups in Radar ↗A few useful ratios bring the size of this ecosystem into perspective.
11 of 678 tracked companies have open roles.
58 of 678 tracked companies have a recorded round.
Share of disclosed capital received by the three largest recorded recipients.
Midpoint of 82 rounds with a disclosed amount.
Scale is concentrated. Opportunity is broader. The three largest funding recipients hold 57.7% of disclosed capital, while 91.4% of tracked companies have no recorded funding round.
Explore the segments →Recorded company formation and disclosed funding across the complete annual series shown.
Sum of recorded funding rounds · USD
| Year | Funding (USD) | Founded | Raising |
|---|---|---|---|
| 2016 | $3.77M | 19 | 2 |
| 2017 | $1.16M | 14 | 1 |
| 2018 | $12.85M | 21 | 2 |
| 2019 | $1.82M | 20 | 1 |
| 2020 | $54.87M | 15 | 5 |
| 2021 | $16.61M | 20 | 4 |
| 2022 | $530.56M | 10 | 9 |
| 2023 | $155.47M | 8 | 10 |
| 2024 | $138.77M | 2 | 14 |
| 2025 | $194.48M | 0 | 12 |
Share of all disclosed company funding.
110 recorded rounds since 2016
Recorded participation in energy company rounds since 2016.
Backed by NICHIAS and E-Cloud and others.
Backed by Spiral Capital and FIRSTLIGHT Capital and others.
Backed by Dai-Ichi Life and MITSUI CHEMICALS and others.
Backed by Incubate Fund.
Backed by CDPQ.
Backed by MOL PLUS and JIC Venture Growth Investments and others.
Backed by ABC Impact and HSBC.
Backed by Coreline and Soros Capital Management.
Backed by Energy & Environment Investment and JIC Venture Growth Investments and others.
Backed by Sumitomo Mitsui Banking Corporation and SBI Investment and others.
Backed by ENEOS Group and NEC Capital Solutions and others.
Backed by Sumitomo Mitsui Trust Bank and JIC Venture Growth Investments and others.
Backed by INCJ.
Backed by NICHIAS and E-Cloud and others.
No reviewed exact national-ID connector has yet been qualified for Japan; this is a checked implementation boundary, not evidence that filings are absent.; No reviewed exact national-ID connector has yet been qualified for Japan; this is a checked implementation boundary, not evidence that filings are absent.
How the Japan companies on this page show up online: the sites people visit, the apps they install, and how often those apps ship.
8 of the 678 companies on this page carry a measured traffic record (1.2%); these are the largest of those, by monthly visits. The median among them is 122,526 visits.
| Company | Monthly visits | Authority | Mobile |
|---|---|---|---|
| Hokkaido Gashokkaido-gas.co.jp | 448,711 | 45 | 88.7% |
| Toshibatoshiba.com | 406,750 | 47 | 48.9% |
| Iwataniiwatani.co.jp | 178,173 | 52 | 75.5% |
| Hotaluxhotalux.com | 122,685 | 39 | 85.8% |
| NGK Corporationngk.co.jp | 122,368 | 47 | 71.5% |
| Cosmo Energy Groupcosmo-energy.co.jp | 94,923 | 46 | 76.9% |
| e-Mobility Powere-mobipower.co.jp | 69,649 | 39 | 66.5% |
| Energy Solution Companyesco-co.jp | 4,885 | 33 | 0% |
Visits and authority are third-party web estimates, not company-reported figures.
32 of these companies (4.7%) publish at least one Android app — 64 apps in all, carrying 7.2M installs between them.
| App | Installs | Rating | Store category |
|---|---|---|---|
| 【出光公式】Drive Onで給油を便利にお得に！Idemitsu Kosan | 4.4M | — | Lifestyle |
| マイニチガスNichigas | 744.7K | — | Lifestyle |
| 関西停電情報Kansai Electric Power Transmission & Distribution | 371.3K | — | Lifestyle |
| 東北電力 よりそうｅねっとTohoku Electric Power | 320.7K | — | Lifestyle |
| TEPCO速報Tokyo Electric Power Company | 204.7K | — | Lifestyle |
| 停電情報お知らせサービスChubu Electric Power | 189.4K | — | Lifestyle |
| 九電ecoアプリKyushu Electric Power | 181.1K | — | Lifestyle |
| MySOLATOTaiyo Oil Company | 156K | — | Lifestyle |
| LooopでんきLooop | 104.4K | — | Business |
| 航空波浪気象情報International Meteorological Ocean | 80.8K | — | Weather |
Installs are lifetime totals to date at the June 2026 store reading — a measure of reach, not of people using an app today.
The busiest app inside each of this page’s own segments, with the quarterly release trend behind it (2023Q1–2024Q4).
| Segment | Apps | Installs | Leading app | Release trend |
|---|---|---|---|---|
| Oil & Gas Downstream | 14 | 5.3M | 【出光公式】Drive Onで給油を便利にお得に！ 4.4M | |
| Diversified Chemicals | 5 | 4.5M | Idemitsu India Connect 75.7K | |
| Utilities | 16 | 1.4M | 関西停電情報 371.3K | |
| Wind Energy | 3 | 191.4K | Looopでんき 104.4K | |
| Oil & Gas Downstream Services | 2 | 156.8K | MySOLATO 156K | |
| Energy Storage | 2 | 72.5K | e-Mobility Power アプリ 41.7K | |
| Electricity Transmission & Distribution Equipment | 8 | 49.5K | OPELO 41.5K | |
| Oil & Gas Midstream | 2 | 42.3K | ENEOS Charge Plus EV充電アプリ 42.1K |
A company can carry several segment tags, so these rows overlap and should not be added together. Trend lines are zero-based and share one quarter grid, so a flat line is a quiet segment, not a missing one.
Explore the segments behind the headline numbers.
Rank segments by scale, hiring or disclosed funding.
Companies can sit in several segments. Counts and funding overlap.
The largest measured segment in this report snapshot.
0 companies hiring · $0 disclosed funding
Explore in RadarCommon revenue models; a company can use more than one.
Recorded corporate activity linked to companies in this landscape.
To date, Renova has secured more than JPY 500 billion in project financing to steadily expand the development and operation of its renewable energy power generation businesses.
The transaction covers JERA’s 0.417% interest in the Chevron‑operated Gorgon project – lifting MidOcean’s stake to 1.417%.
INPEX Corporation has signed a share purchase agreement to acquire the remaining 49% stake in INPEX South West Caspian Sea Petroleum Co., Ltd. (ISWCS), making it a wholly owned subsidiary.
AIG acquired a 9.9% holding in Onex for approximately $642m.
By combining MISUMI’s precision components with Fictiv’s digital manufacturing platform, we’re creating one system that supports everything from idea to production.
Helical Fusion, a Japanese startup pursuing commercial nuclear fusion, secured $5.5 million in a Series A extension round to accelerate development of its novel reactor design.
The Solar Tech Group (300 employees, €240 million from CA in 2024), based in Poitiers-Biard (Vienna), announces the signing of an agreement with the Spanish giant Iberdrola (42,300 employees in 2023), to acquire 100% of the shares of Iberdrola Renewables SAS, its French subsidiary dedicated to renewable energies onshore.
Kepco will acquire an 80% stake in Simply Blue Energy OSW Ltd.
Director Fabian Van Damme, through his own company, has acquired the shares previously held by Air Water, paving the way for the firm’s next phase of growth.
Toshiba Corporation has announced the preferred bidder to acquire its troubled memory division.
Top 10 categories among 224 recorded events in the 24-month window.
4 tracked people moves
Resignation Previously Manager of Toshiba Spain
Resignation Previously Chief Financial Officer
Appointment Chief Financial Officer
Death Previously Co-Head of Onex Partners
Products, platforms and features in the recorded window
Motor
33 recorded customer wins
Customer: kss lineTransport
Customer: Antony Lara Enviro Solutions Pvt. Ltd.Renewable Energy
Customer: Ako BatteryEnergy Storage
Customer: Nippon Yusen Kaisha (NYK) and Knutsen NYK Carbon Carriers (KNCC)
Customer: UKIFSFusion Energy
Customer: holcim philippinesindustrial
1 companies with reported reductions
9,000 rolescost reduction
5 recorded events
awaiting regulatory approval
safety review underwayJapan\'s Nuclear Regulation Authority
set up independent committee to investigate causes
investigation report receivedindependent committee
8 tracked suits
construction contract defect dispute, warranty and liabilityCivil · Ongoing
renewable energy premium reduction dispute · Verdict
Company-linked deal reports; status is preserved as recorded.
| Acquirer → target | Status | Date | Value / context |
|---|---|---|---|
| midocean energy→JERA ↗ | Announced | 2026-03-13 | Not stated in snapshot |
| INPEX CORPORATION→INPEX South West Caspian Sea Petroleum Co., Ltd. (ISWCS) | Announced | 2026-03-02 | Not stated in snapshot |
| american international group→Onex (Japan) ↗ | Announced | 2026-02-11 | $642.0M |
| Onex (Japan)→Convex Insurance Group | Completed | 2026-02-09 | Not stated in snapshot |
| aig→Onex (Japan) ↗ | Completed | 2026-02-09 | $7.0B |
| Onex (Japan)→convex group | Completed | 2026-02-06 | $7.0B |
A discussion or rumour is not a completed transaction. An unstated value is not zero.
Recorded hiring and workforce signals from the available source snapshot.
No repeated job title is supported by this snapshot.
0 tracked postings mention remote work.
| Company | Employees |
|---|---|
| ENEOS Holdings ↗ | 57,625 |
| Kansai Electric Power ↗ | 33,657 |
| Chubu Electric Power ↗ | 30,554 |
| kandenko ↗ | 11,360 |
| Cosmo Energy Group ↗ | 10,248 |
| Idemitsu Kosan ↗ | 8,749 |
| JERA ↗ | 5,062 |
| Chiyoda Corporation ↗ | 4,673 |
158 founders and chief executives across 130 companies.
Ex-Clean Air Task Force, Tokamak Energy. Swansea University BE 2014, Imperial College London MSc 2015, The Open University PhD 2020
Dai-ichi Life Insurance. ex-PwC Japan, Mizuho, Japan Bank for International. Kyoto University 2009, Kyoto University 2011
Ex-BCG, Pacific Summit Energy, The Kansai Electric Power Company. The University of Tokyo 2006, The Wharton School MBA 2014
Osaka University PhD, MSc. Kansai University BASc.
Kindai University BS
Ex-CEO I AND C-Cruise, J-Brain, ABeam Consulting.
Ex-Toppan Printing.
ex-Co-Founder Digital Grid Solutions, soket, IBM. Waseda University 2006
SoftBank, Owner rccn, ex-Vodafone, Lead Solution Architect. The University of Electro-Communications 1987, Future University Hakodate PhD 2008
EX-Alcatel Vacuum Technology France. Kagawa University MS 2005, PhD 2008
Tohoku University MS 2016, PhD 2018
CEO Fuji Aero Performance Center. Kyushu University 2017
3 profiles with education records.
0 profiles with prior-work records.
Profiles cover recorded founders and leaders; contact details remain in Radar.
473,168 articles in the measured 12-month window.
Energy coverage across Japan · articles per complete quarter
| Quarter | Articles |
|---|---|
| 2021Q2 | 65,565 |
| 2021Q3 | 83,974 |
| 2021Q4 | 58,623 |
| 2022Q1 | 71,098 |
| 2022Q2 | 69,544 |
| 2022Q3 | 73,223 |
| 2022Q4 | 97,170 |
| 2023Q1 | 97,834 |
| 2023Q2 | 96,297 |
| 2023Q3 | 111,247 |
| 2023Q4 | 90,645 |
| 2024Q1 | 108,215 |
| 2024Q2 | 108,188 |
| 2024Q3 | 116,234 |
| 2024Q4 | 118,263 |
| 2025Q1 | 143,120 |
| 2025Q2 | 106,331 |
| 2025Q3 | 186,041 |
| 2025Q4 | 86,534 |
| 2026Q1 | 100,370 |
Article volume measures coverage, not market sales.
148 recorded company events across 28 companies; percentages use that event total.
Energy coverage across Japan · ranked by full-period article count.
Recent and prior counts use the source comparison windows.
Energy coverage across Japan
| Keyword | Recent | Prior | Change |
|---|---|---|---|
| countries | 4,193 | 1,858 | 126% |
| trade dispute mechanisms | 2,667 | 1,655 | 61% |
| bilateral trade | 2,355 | 1,370 | 72% |
| preferential tariff | 1,824 | 1,236 | 48% |
| forex liquidity | 1,640 | 485 | 238% |
| exchange rates | 1,511 | 858 | 76% |
| tariff rate quota | 1,501 | 951 | 58% |
| mfn tariff | 1,364 | 894 | 53% |
| gold spot price | 1,215 | 180 | 575% |
| oil price volatility | 1,172 | 256 | 358% |
| honda forums | 0 | 2,596 | -100% |
| olympic team selections | 835 | 1,860 | -55% |
| olympic trials | 889 | 1,550 | -43% |
| summer olympics athletics | 231 | 1,105 | -79% |
| sports in summer olympics | 157 | 945 | -83% |
Energy coverage across Japan
territories, disputed islands, countries
24.7% critical · 16.7% positiveinflation reports fx, currency intervention policies, trade deficits fx
41.1% critical · 43.9% positivegdp growth rate, gdp acceleration, economic output growth
33.6% critical · 45.9% positiveEnergy coverage across Japan. Topic labels describe recorded classifications and can include broad context.
53,205 papers in the recorded worldwide scope.
Tone counts: 50,914 positive · 1,755 neutral · 536 negative.
Landmark: Pseudocapacitive oxide materials for high-rate electrochemical energy storage
Landmark: Electrode Materials for Rechargeable Sodium‐Ion Batteries: Potential Alternatives to Current Lithium‐Ion Batteries
Landmark: Hierarchical Control of Droop-Controlled AC and DC Microgrids—A General Approach Toward Standardization
Common problems researchers identify · 0120.3% of this theme group
Researchers discuss barriers and impacts of various storage technologies for future power grids.
Energy storage (628) · Renewable energy (327) · Environmental economics (102) · Energy (111)
Comparative Review of Energy Storage Systems, Their Roles, and Impacts on Future Power Systems
A Comprehensive Review on Energy Storage Systems: Types, Comparison, Current Scenario, Applications, Barriers, and Potential Solutions, Poli
| Year | Share index |
|---|---|
| 2022 | 1155.8 |
| 2023 | 1242.8 |
| 2024 | 1162.8 |
| 2025 | 1529.9 |
Common problems researchers identify · 0217.0% of this theme group
Studies highlight difficulties in developing reliable anode and cathode materials for rechargeable batteries.
Anode (362) · Cathode (269) · Energy storage (330) · Battery (225)
Developing Cathode Materials for Aqueous Zinc Ion Batteries: Challenges and Practical Prospects
Advances of lithium-ion batteries anode materials—A review
| Year | Share index |
|---|---|
| 2022 | 478.0 |
| 2023 | 477.3 |
| 2024 | 418.7 |
| 2025 | 508.1 |
Common problems researchers identify · 0315.3% of this theme group
Papers examine performance ceilings and safety concerns of lithium‑ion and flow battery technologies.
Battery (397) · Energy storage (351) · Lithium (99) · Flow battery (40)
Electrical energy storage for transportation—approaching the limits of, and going beyond, lithium-ion batteries
<scp>High‐Energy</scp> Lithium‐Ion Batteries: Recent Progress and a Promising Future in Applications
| Year | Share index |
|---|---|
| 2022 | 65.6 |
| 2023 | 65.6 |
| 2024 | 68.2 |
| 2025 | 81.4 |
Common problems researchers identify · 0412.2% of this theme group
Research points to challenges in creating stable, high‑conductivity electrolytes for advanced batteries.
Electrolyte (356) · Fast ion conductor (49) · Lithium (115) · Electrochemistry (107)
Electrolyte-Additive-Driven Interfacial Engineering for High-Capacity Electrodes in Lithium-Ion Batteries: Promise and Challenges
Advanced Electrolyte Design for High‐Energy‐Density Li‐Metal Batteries under Practical Conditions
| Year | Share index |
|---|---|
| 2022 | 522.0 |
| 2023 | 537.9 |
| 2024 | 465.8 |
| 2025 | 536.6 |
Common problems researchers identify · 0512.0% of this theme group
Analyses focus on technical and operational hurdles when coupling renewables with electric power systems.
Renewable energy (264) · Photovoltaic system (94) · Grid (74) · Electricity (73)
A Review of Hybrid Renewable/Alternative Energy Systems for Electric Power Generation: Configurations, Control, and Applications
Electric vehicles with renewables integration in electrical power systems: A review of technologies, uncertainties and optimization allocati
| Year | Share index |
|---|---|
| 2022 | 1720.1 |
| 2023 | 1836.7 |
| 2024 | 1693.3 |
| 2025 | 2352.7 |
Common problems researchers identify · 0611.9% of this theme group
Works review limitations of nanostructured materials for high‑performance electrochemical capacitors.
Supercapacitor (235) · Nanotechnology (196) · Energy storage (329) · Electrochemical energy storage (78)
Flexible and Stretchable Energy Storage: Recent Advances and Future Perspectives
Review on Carbon Nanostructures for Supercapacitors: Cutting-Edge Energy Storage Applications and Perspectives
| Year | Share index |
|---|---|
| 2022 | 4845.5 |
| 2023 | 4681.9 |
| 2024 | 4784.4 |
| 2025 | 3630.0 |
Common problems researchers identify · 0711.4% of this theme group
Literature addresses efficiency, safety, and scalability issues of hydrogen storage solutions.
Hydrogen storage (134) · Hydrogen (80) · Thermal energy storage (83) · Energy storage (226)
Hydrogen Storage Technologies for Future Energy Systems
Chemical‐based Hydrogen Storage Systems: Recent Developments, Challenges, and Prospectives
| Year | Share index |
|---|---|
| 2022 | 306.6 |
| 2023 | 332.4 |
| 2024 | 334.3 |
| 2025 | 353.7 |
Cautions · 0122.0% of this theme group
Authors caution about cost and market feasibility of large‑scale storage paired with renewables.
Energy storage (178) · Renewable energy (112) · Environmental economics (32) · Electricity (51)
Development of Energy Storage Systems for Power Network Reliability: A Review
A Quantitative Assessment of the Economic Viability of Photovoltaic Battery Energy Storage Systems
| Year | Share index |
|---|---|
| 2022 | 1408.3 |
| 2023 | 1483.7 |
| 2024 | 1358.3 |
| 2025 | 1830.3 |
Cautions · 0218.2% of this theme group
Studies warn of potential grid stability problems arising from high renewable penetration.
Renewable energy (125) · Photovoltaic system (63) · Grid (52) · Electricity (48)
Impacts of Renewable Energy Integration on Power System Stability
Integrating Variable Renewable Energy Into the Grid: Key Issues
| Year | Share index |
|---|---|
| 2022 | 1720.1 |
| 2023 | 1836.7 |
| 2024 | 1693.3 |
| 2025 | 2352.7 |
Cautions · 0317.0% of this theme group
Research highlights unresolved material performance and scaling challenges for thermal energy storage.
Thermal energy storage (79) · Energy storage (111) · Thermal (23) · Latent heat (12)
Sorption heat storage for long-term low-temperature applications: A review on the advancements at material and prototype scale
Review of Thermal Energy Storage Materials for Application in Large-Scale Integrated Energy Systems—Methodology for Matching Heat Storage So
| Year | Share index |
|---|---|
| 2022 | 180.5 |
| 2023 | 189.0 |
| 2024 | 192.5 |
| 2025 | 241.3 |
Cautions · 0415.4% of this theme group
Papers raise safety and durability questions for emerging sodium‑ion and solid‑state batteries.
Anode (82) · Cathode (72) · Electrolyte (84) · Lithium (40)
Electrode Materials for Rechargeable Sodium‐Ion Batteries: Potential Alternatives to Current Lithium‐Ion Batteries
From Lithium‐Metal toward Anode‐Free Solid‐State Batteries: Current Developments, Issues, and Challenges
| Year | Share index |
|---|---|
| 2022 | 804.6 |
| 2023 | 822.9 |
| 2024 | 728.0 |
| 2025 | 861.7 |
Cautions · 0512.0% of this theme group
Analyses point to reliability and manufacturing hurdles for nanostructured supercapacitor devices.
Supercapacitor (38) · Capacitance (13) · Electrochemistry (30) · Nanotechnology (17)
Progress and Perspectives on Promising Covalent‐Organic Frameworks (COFs) Materials for Energy Storage Capacity
Conductive Gels for Energy Storage, Conversion, and Generation: Materials Design Strategies, Properties, and Applications
| Year | Share index |
|---|---|
| 2022 | 1021.4 |
| 2023 | 1003.7 |
| 2024 | 867.5 |
| 2025 | 948.9 |
Cautions · 069.9% of this theme group
Works emphasize the danger of overheating and failure modes in high‑energy batteries.
Battery (91) · Thermal runaway (12) · Energy storage (49) · State of charge (10)
Studying Abuse Testing on Lithium-Ion Battery Packaging for Energy Storage Systems
Recent Advances in the Development of Li‐Air Batteries, Experimental and Predictive Approaches – Prospective, Challenges, and Opportunities
| Year | Share index |
|---|---|
| 2022 | 68.0 |
| 2023 | 72.5 |
| 2024 | 50.3 |
| 2025 | 72.1 |
Cautions · 075.5% of this theme group
Research cautions about electrolyte imbalance and performance degradation in redox flow systems.
Flow battery (46) · Redox (33) · Vanadium (24) · Electrolyte (22)
Vanadium redox flow battery capacity loss mitigation strategy based on a comprehensive analysis of electrolyte imbalance effects
Experimental Study on the Effect of Operating Conditions on the Efficiency of Vanadium Redox Flow Battery
| Year | Share index |
|---|---|
| 2022 | 229.6 |
| 2023 | 224.8 |
| 2024 | 201.8 |
| 2025 | 257.5 |
Opportunities · 0123.0% of this theme group
Opportunities focus on integrating batteries with wind and solar to enhance reliability and flexibility.
Energy storage (1,114) · Renewable energy (356) · Energy (198) · Wind power (169)
Battery Energy Storage Optimization in Distribution Power Systems with Distributed Renewable Energy Resources
Design and Control of an Energy Storage System for Hybrid Renewable Energy Systems
| Year | Share index |
|---|---|
| 2022 | 1241.7 |
| 2023 | 1328.6 |
| 2024 | 1279.1 |
| 2025 | 1709.0 |
Opportunities · 0222.7% of this theme group
Studies explore novel electrolyte formulations that improve performance of next‑generation batteries.
Cathode (418) · Electrolyte (470) · Anode (402) · Electrochemistry (347)
Phosphated Electrolyte Enabling Dual Robust Electrode–Electrolyte Interfacial Reconstruction Toward Capable Zn Metal Batteries
Sustainable High‐Performance Aqueous Batteries Enabled by Optimizing Electrolyte Composition
| Year | Share index |
|---|---|
| 2022 | 804.6 |
| 2023 | 822.9 |
| 2024 | 728.0 |
| 2025 | 861.7 |
Opportunities · 0315.1% of this theme group
Research targets ceramic and ferroelectric materials for compact, high‑energy density storage devices.
Dielectric (122) · Energy storage (502) · Ceramic (64) · Ferroelectricity (43)
Development of <scp>PVDF</scp> / <scp>PMMA</scp> ‐Cu nanocomposites with enhanced dielectric properties and energy storage density for capac
Advanced carbon nanomaterials for high-performance energy storage technologies
| Year | Share index |
|---|---|
| 2022 | 256.3 |
| 2023 | 249.6 |
| 2024 | 190.2 |
| 2025 | 138.3 |
Opportunities · 0413.9% of this theme group
Papers propose coordinated control strategies for photovoltaic, wind, and storage to maximize efficiency.
Renewable energy (356) · Photovoltaic system (242) · Electricity (116) · Battery (193)
Optimizing Power System Reliability and Carbon Emissions With a Fuzzy Unit Commitment Model Incorporating Renewable Energy, Load Forecast Er
Distributed scheduling for multi-energy synergy system considering renewable energy generations and plug-in electric vehicles: A level-based
| Year | Share index |
|---|---|
| 2022 | 1685.9 |
| 2023 | 1766.8 |
| 2024 | 1632.8 |
| 2025 | 2211.5 |
Opportunities · 0510.1% of this theme group
Works highlight graphene electrodes that bridge the gap between supercapacitors and batteries.
Supercapacitor (526) · Capacitance (273) · Electrode (176) · Graphene (76)
A high-performance supercapacitor-battery hybrid energy storage device based on graphene-enhanced electrode materials with ultrahigh energy
A review of supercapacitors: Materials, technology, challenges, and renewable energy applications
| Year | Share index |
|---|---|
| 2022 | 1430.1 |
| 2023 | 1435.3 |
| 2024 | 1280.5 |
| 2025 | 1148.6 |
Opportunities · 067.7% of this theme group
Research presents methods for balancing storage and distributed generation within localized grids.
Microgrid (331) · Energy storage (270) · Renewable energy (179) · Distributed generation (56)
Power Management of Hybrid Microgrid with Energy Storage System
Capacity Optimization of Battery Energy Storage Systems in a Microgrid
| Year | Share index |
|---|---|
| 2022 | 1086.5 |
| 2023 | 1156.0 |
| 2024 | 1104.3 |
| 2025 | 1546.0 |
Opportunities · 077.5% of this theme group
Studies develop hybrid phase‑change materials to boost thermal storage efficiency and durability.
Thermal energy storage (267) · Thermal (84) · Phase-change material (65) · Latent heat (39)
Advances in nano-enhanced phase change materials and hybrid thermal energy storage systems: Paving the way for sustainable energy solutions
Improving the efficiency of thermal energy storage through the development and evaluation of hybrid nano-enhanced phase change materials
| Year | Share index |
|---|---|
| 2022 | 182.1 |
| 2023 | 190.9 |
| 2024 | 194.8 |
| 2025 | 243.8 |
Orientation shares compared with 25,000 papers in the reference sample.
| Research orientation | This field | Reference sample |
|---|---|---|
| Promising | 47.6% | 37.4% |
| Breakthrough | 30.9% | 26.5% |
| Descriptive | 8.1% | 17.4% |
| Problem-identifying | 7.0% | 9.3% |
| Comparative | 3.8% | 3.8% |
| Cautionary | 2.4% | 4.5% |
| Critical | 0.3% | 1.0% |
Counts and shares refer to the stated research pool. A low count describes how much of that research is recorded here, not the absence of a real-world concern.
| Concern / example paper | Papers | Share | Raised as a problem | Worldwide share |
|---|---|---|---|---|
| Energy & datacenter footprintEnergy storage in datacenters | 45 | 0.09% | 4 (8.9%) | 0.09% |
| Hardware, e-waste & supply chainLife Cycle Assessment and Sustainability of Energy Storage Options for Solar PV Technologies | 30 | 0.06% | 3 (10.0%) | 0.06% |
| Privacy & surveillanceA Resilient and Privacy-Preserving Energy Management Strategy for Networked Microgrids | 23 | 0.05% | 0 (0.0%) | 0.05% |
| Water useExperimental and Theoretical Analysis of Immersion Cooling of a Li-Ion Battery Module | 17 | 0.03% | 0 (0.0%) | 0.03% |
| Concentration of compute powerEnergy Storage Market Power Withholding Bounds in Real-time Markets | 15 | 0.03% | 2 (13.3%) | 0.03% |
| Bias & fairnessFlexibility at a cost: Industrial battery storage and the breakdown of grid fee fairness in Germany | 8 | 0.02% | 1 (12.5%) | 0.02% |
| Safety & misuseCyber Resilience of Battery Energy Storage System Scheduling under Adversarial Attack on Load Forecasting | 5 | 0.01% | 1 (20.0%) | 0.01% |
| Carbon & emissions of computeA multi strategy optimization framework using AI digital twins for smart grid carbon emission reduction | 2 | 0.0% | 0 (0.0%) | 0.0% |
| Labour & data work | 0 | 0.0% | 0 (%) | 0.0% |
Institution and researcher rankings use citations to their covered work. Research scope: worldwide. This may be broader than the company geography.
Company counts, hiring and disclosed funding across the recorded hubs.
34.3% across the displayed hubs
3 companies hiring · $61.7M disclosed funding
Explore companies in Tokyo ↗
16.4% across the displayed hubs
1 companies hiring · $51.4M disclosed funding
Explore companies in Osaka ↗12.1% across the displayed hubs
0 companies hiring · $50.8M disclosed funding
Explore companies in Minato City ↗11.6% across the displayed hubs
0 companies hiring · $154.9M disclosed funding
Explore companies in Chiyoda City ↗8.2% across the displayed hubs
1 companies hiring · $10.5M disclosed funding
Explore companies in Chuo City ↗
6.3% across the displayed hubs
0 companies hiring · $57.4M disclosed funding
Explore companies in Minato ↗
5.8% across the displayed hubs
0 companies hiring · $19.0M disclosed funding
Explore companies in Kyoto ↗
5.3% across the displayed hubs
1 companies hiring · $0 disclosed funding
Explore companies in Yokohama ↗Clear definitions for making better comparisons.
It measures the tracked company ecosystem, recorded funding, hiring and other available evidence. It is not a market-size estimate.
No. A company can belong to several segments, so segment counts and funding can overlap.
A dash or unavailable panel means the current reviewed source snapshot does not support that figure.
Company ecosystem snapshot: 1 September 2026. Funding is recorded in USD; filed accounts retain their stated currency and reporting basis. Each section identifies its own coverage. The news and research behind these sections is explorable in Prism.
Canonical landscape ↗