Apr 11, 2026

According to Energy-Storage.news, the US-based company Energy Vault has purchased a portfolio of battery energy storage system development projects in Japan. The acquisition involves a binding agreement for an 850MW pipeline from an undisclosed Japanese developer.

The portfolio includes 350MW of projects anticipated to reach a notice to proceed stage in the second half of 2027, with commercial operations aimed for the latter half of 2028. An additional 500MW of projects are in earlier stages of development.

Japan’s energy storage market is viewed as a high-growth opportunity, characterized by revenue stacking from wholesale trading and ancillary services. Market observers note that most operational projects are relatively small, but larger initiatives are now being announced by other international and domestic entities. These observers also caution that policy and regulatory conditions in the country’s energy sector can change frequently.

Energy Vault recently reported a substantial year-over-year revenue increase for its full 2025 financial year, alongside a reduced adjusted EBITDA loss. The company attributed this financial improvement to its integrated technology offerings and a develop-to-own strategy.

For the Japanese market, Energy Vault plans to utilize its energy management software, battery system solutions, and sodium-ion cell technology to address demands for system safety and energy density.

Interactive table based on the Store Companies dataset for this report.

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#
Company
Headquarters
Focus
Scale
Note

1
Panasonic Holdings Corporation
Kadoma, Osaka
Automotive & Industrial batteries
Global Giant
Key Tesla supplier via Giga Nevada JV

2
Prime Planet Energy & Solutions
Tokyo
Automotive prismatic batteries
Large
Toyota & Panasonic JV for HEV/PHEV/BEV

3
GS Yuasa International Ltd.
Kyoto
Industrial & Automotive (LiB)
Large
Major for HEVs, aerospace, industrial

4
Murata Manufacturing Co., Ltd.
Nagaokakyo, Kyoto
Small polymer Li-ion
Large
Acquired Sony’s battery business

5
Envision AESC Group
Zama, Kanagawa
Automotive pouch & module
Large
Chinese-owned but HQ in Japan, supplies Nissan

6
Toyota Industries Corporation
Kariya, Aichi
Batteries for Toyota vehicles
Large
Produces for parent Toyota’s electrified models

7
Maxell Holdings, Ltd.
Tokyo
Small Li-ion for devices
Medium
Consumer electronics batteries

8
FDK Corporation
Tokyo
Small Li-ion cylindrical
Medium
Subsidiary of Fujitsu, various applications

9
Eamex Corporation
Osaka
High-power polymer Li-ion
Medium
Specializes in laminate cells for tools/EVs

10
Sanyo Chemical Industries, Ltd.
Kyoto
Battery materials & packs
Medium
Polymer electrolytes, battery systems

11
Hitachi, Ltd.
Tokyo
Industrial & automotive systems
Large
Battery systems for EVs, rail, energy via Hitachi Astemo

12
Toshiba Corporation
Tokyo
SCiB lithium-titanate batteries
Large
Fast-charging, long-life for EVs & infrastructure

13
Mitsubishi Electric Corporation
Tokyo
Battery Packs & Energy Systems
Large
ESS and EV battery pack integration

14
NEC Corporation
Tokyo
ESS via NEC Energy Solutions
Large
Large-scale energy storage systems

15
Suzuki Motor Corporation
Hamamatsu, Shizuoka
Batteries for compact EVs/HEVs
Medium
In-house production for own vehicles

16
Honda Motor Co., Ltd.
Tokyo
Batteries for Honda EVs
Large
Developing in-house with JV partners (e.g., GS Yuasa)

17
Nissan Motor Co., Ltd.
Yokohama
Batteries for Nissan EVs
Large
Historical production, now via AESC JV/ownership

18
Makita Corporation
Anjo, Aichi
Power tool batteries
Large
Major producer of Li-ion for cordless tools

19
FDK Twicell Co., Ltd.
Tokyo
Cylindrical Li-ion
Medium
FDK subsidiary for battery manufacturing

20
VentureBattery Inc.
Kyoto
Custom battery packs
Small
Design and assembly of battery systems

21
ELIIY Power Co., Ltd.
Tokyo
Large-scale ESS
Medium
Stationary storage using Li-ion

22
Japan Storage Battery Co., Ltd.
Kyoto
Industrial batteries
Medium
GS Yuasa subsidiary for specific markets

23
Leclanché SA Japan
Tokyo
ESS & Marine batteries
Medium
Japanese office of Swiss firm, local assembly

24
PJP Eye Ltd.
Tokyo
Portable device batteries
Small
Battery pack designer and manufacturer

25
Takaoka Toko Co., Ltd.
Tokyo
Battery systems for ESS/EV
Medium
Power conversion and battery integration

26
Furukawa Battery Co., Ltd.
Yokohama
Lithium primary & Li-ion packs
Medium
Also produces Li-ion for specific applications

27
Shin-Kobe Electric Machinery Co., Ltd.
Tokyo
Industrial Li-ion batteries
Medium
Hitachi Chemical (now Showa Denko) subsidiary

28
Nippon Chemi-Con Corporation
Tokyo
Capacitors & battery materials
Medium
Engaged in battery component production

29
Yokogawa Electric Corporation
Tokyo
Battery manufacturing systems
Large
Production equipment for cell manufacturing

30
Sumitomo Electric Industries, Ltd.
Osaka
Battery materials & systems
Large
Active in solid-state battery development

This report provides a comprehensive view of the lithium-ion accumulator industry in Japan, tracking demand, supply, and trade flows across the national value chain. It explains how demand across key channels and end-use segments shapes consumption patterns, while also mapping the role of input availability, production efficiency, and regulatory standards on supply.

Beyond headline metrics, the study benchmarks prices, margins, and trade routes so you can see where value is created and how it moves between domestic suppliers and international partners. The analysis is designed to support strategic planning, market entry, portfolio prioritization, and risk management in the lithium-ion accumulator landscape in Japan.

Quick navigation
Key findings

Domestic demand is shaped by both household and industrial usage, with trade flows linking local supply to imports and exports.
Pricing dynamics reflect unit values, freight costs, exchange rates, and regulatory shifts that affect sourcing decisions.
Supply depends on input availability and production efficiency, creating a distinct national cost curve.
Market concentration varies by segment, creating different competitive landscapes and entry barriers.
The 2035 outlook highlights where capacity investment and demand growth are most aligned within the country.
Report scope

The report combines market sizing with trade intelligence and price analytics for Japan. It covers both historical performance and the forward outlook to 2035, allowing you to compare cycles, structural shifts, and policy impacts.

Market size and growth in value and volume terms
Consumption structure by end-use segments
Production capacity, output, and cost dynamics
Trade flows, exporters, importers, and balances
Price benchmarks, unit values, and margin signals
Competitive context and market entry conditions
Product coverageProdcom 27202350 – Lithium-ion accumulatorsCountry coverageCountry profile and benchmarks

This report provides a consistent view of market size, trade balance, prices, and per-capita indicators for Japan. The profile highlights demand structure and trade position, enabling benchmarking against regional and global peers.

Methodology

The analysis is built on a multi-source framework that combines official statistics, trade records, company disclosures, and expert validation. Data are standardized, reconciled, and cross-checked to ensure consistency across time series.

International trade data (exports, imports, and mirror statistics)
National production and consumption statistics
Company-level information from financial filings and public releases
Price series and unit value benchmarks
Analyst review, outlier checks, and time-series validation

All data are normalized to a common product definition and mapped to a consistent set of codes. This ensures that comparisons across time are aligned and actionable.

Forecasts to 2035

The forecast horizon extends to 2035 and is based on a structured model that links lithium-ion accumulator demand and supply to macroeconomic indicators, trade patterns, and sector-specific drivers. The model captures both cyclical and structural factors and reflects known policy and technology shifts in Japan.

Historical baseline: 2012-2025
Forecast horizon: 2026-2035
Scenario-based sensitivity to income growth, substitution, and regulation
Capacity and investment outlook for major producing companies

Each projection is built from national historical patterns and the broader regional context, allowing the report to show where growth is concentrated and where risks are elevated.

Price analysis and trade dynamics

Prices are analyzed in detail, including export and import unit values, regional spreads, and changes in trade costs. The report highlights how seasonality, freight rates, exchange rates, and supply disruptions influence pricing and margins.

Price benchmarks by country and sub-region
Export and import unit value trends
Seasonality and calendar effects in trade flows
Price outlook to 2035 under baseline assumptions
Profiles of market participants

Key producers, exporters, and distributors are profiled with a focus on their operational scale, geographic footprint, product mix, and market positioning. This helps identify competitive pressure points, partnership opportunities, and routes to differentiation.

Business focus and production capabilities
Geographic reach and distribution networks
Cost structure and pricing strategy indicators
Compliance, certification, and sustainability context
How to use this report

Quantify domestic demand and identify the most attractive segments
Evaluate export opportunities and prioritize target destinations
Track price dynamics and protect margins
Benchmark performance against leading competitors
Build evidence-based forecasts for investment decisions

This report is designed for manufacturers, distributors, importers, wholesalers, investors, and advisors who need a clear, data-driven picture of lithium-ion accumulator dynamics in Japan.

FAQ
What is included in the lithium-ion accumulator market in Japan?

The market size aggregates consumption and trade data, presented in both value and volume terms.

How are the forecasts to 2035 built?

The projections combine historical trends with macroeconomic indicators, trade dynamics, and sector-specific drivers.

Does the report cover prices and margins?

Yes, it includes export and import unit values, regional spreads, and a pricing outlook to 2035.

Which benchmarks are included?

The report benchmarks market size, trade balance, prices, and per-capita indicators for Japan.

Can this report support market entry decisions?

Yes, it highlights demand hotspots, trade routes, pricing trends, and competitive context.

1. INTRODUCTION

Report Scope and Analytical Framing

Report DescriptionResearch Methodology and the Analytical FrameworkData-Driven Decisions for Your BusinessGlossary and Product-Specific Terms2. EXECUTIVE SUMMARY

Concise View of Market Direction

Key FindingsMarket TrendsStrategic ImplicationsKey Risks and Watchpoints3. DOMESTIC MARKET SIZE AND DEVELOPMENT PATH

Market Size, Growth and Scenario Framing

Market Size: Historical Data (2012-2025) and Forecast (2026-2035)Growth Outlook and Market Development Path to 2035Growth Driver DecompositionScenario Framework and Sensitivities4. CATEGORY SCOPE, DEFINITIONS AND BOUNDARIES

Commercial and Technical Scope

What Is Included and How the Market Is DefinedMarket Inclusion CriteriaProduct / Category DefinitionExclusions and BoundariesDistinction From Adjacent Products and Substitute Categories5. CATEGORY STRUCTURE, SEGMENTATION AND PRODUCT MATRIX

How the Market Splits Into Decision-Relevant Buckets

By Product Type / ConfigurationBy Application / End UseBy Customer / Buyer TypeBy Channel / Business Model / Technology PlatformSegment Attractiveness MatrixProduct Matrix and Segment Growth Logic6. DOMESTIC DEMAND, CUSTOMER AND BUYER ARCHITECTURE

Where Demand Comes From and How It Behaves

Consumption / Demand: Historical Data (2012-2025) and Forecast (2026-2035)Demand by End-Use and Buyer GroupDemand by Customer / Consumer SegmentPurchase Criteria, Switching Logic and Adoption BarriersReplacement, Replenishment and Installed-Base DynamicsFuture Demand Outlook7. DOMESTIC PRODUCTION, SUPPLY AND VALUE CHAIN

Supply Footprint and Value Capture

Production in the CountryDomestic Manufacturing FootprintCapacity, Bottlenecks and Supply RisksValue Chain Logic and Margin PoolsDistribution and Route-to-Market Structure8. IMPORTS, EXPORTS AND SOURCING STRUCTURE

Trade Flows and External Dependence

ExportsImportsTrade BalanceImport DependenceSourcing Risks and Resilience9. PRICING, PROMOTION AND COMMERCIAL MODEL

Price Formation and Revenue Logic

Domestic Price Levels and CorridorsPricing by Segment / Specification / ChannelCost Drivers and Margin LogicPromotion, Discounting and Procurement PatternsRevenue Quality and Commercial Levers10. COMPETITIVE LANDSCAPE AND PORTFOLIO POWER

Who Wins and Why

Market Structure and ConcentrationCompetitive ArchetypesSegment-by-Segment Competitive IntensityPortfolio Breadth and Product PositioningCapability MatrixStrategic Moves, Partnerships and Expansion Signals11. DOMESTIC MARKET STRUCTURE AND CHANNEL LOGIC

How the Domestic Market Works

Core Demand CentersLocal Production and Distribution RolesChannel StructureBuyer and Procurement ArchitectureRegional Imbalances Within the Country12. GROWTH PLAYBOOK AND MARKET ENTRY

Commercial Entry and Scaling Priorities

Where to PlayHow to WinDistributor / Partner / Direct Entry OptionsCapability ThresholdsEntry Risks and Mitigation13. WHERE TO PLAY NEXT: MOST ATTRACTIVE GROWTH OPPORTUNITIES

Where the Best Expansion Logic Sits

Most Attractive Product NichesMost Attractive Customer SegmentsWhite Spaces and Unsaturated OpportunitiesHigh-Margin and Underpenetrated PocketsMost Promising Product Adjacencies14. PROFILES OF MAJOR COMPANIES

Leading Players and Strategic Archetypes

Leading Manufacturers and SuppliersProduction Footprint and CapacitiesProduct Portfolio and Segment FocusPricing Positioning and Indicative Price LogicChannel / Distribution StrengthStrategic Archetypes15. METHODOLOGY, SOURCES AND DISCLAIMER

How the Report Was Built

Modeling LogicSource RegisterPublications, Regulatory and Industry ReferencesAnalytical NotesDisclaimer

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Panasonic Holdings Corporation

Key Tesla supplier via Giga Nevada JV

Prime Planet Energy & Solutions

Toyota & Panasonic JV for HEV/PHEV/BEV

GS Yuasa International Ltd.

Major for HEVs, aerospace, industrial

Murata Manufacturing Co., Ltd.

Acquired Sony’s battery business

Envision AESC Group

Chinese-owned but HQ in Japan, supplies Nissan

Toyota Industries Corporation

Produces for parent Toyota’s electrified models

Maxell Holdings, Ltd.

Consumer electronics batteries

FDK Corporation

Subsidiary of Fujitsu, various applications

Eamex Corporation

Specializes in laminate cells for tools/EVs

Sanyo Chemical Industries, Ltd.

Polymer electrolytes, battery systems

Hitachi, Ltd.

Battery systems for EVs, rail, energy via Hitachi Astemo

Toshiba Corporation

Fast-charging, long-life for EVs & infrastructure

Mitsubishi Electric Corporation

ESS and EV battery pack integration

NEC Corporation

Large-scale energy storage systems

Suzuki Motor Corporation

In-house production for own vehicles

Honda Motor Co., Ltd.

Developing in-house with JV partners (e.g., GS Yuasa)

Nissan Motor Co., Ltd.

Historical production, now via AESC JV/ownership

Makita Corporation

Major producer of Li-ion for cordless tools

FDK Twicell Co., Ltd.

FDK subsidiary for battery manufacturing

VentureBattery Inc.

Design and assembly of battery systems

ELIIY Power Co., Ltd.

Stationary storage using Li-ion

Japan Storage Battery Co., Ltd.

GS Yuasa subsidiary for specific markets

Leclanché SA Japan

Japanese office of Swiss firm, local assembly

PJP Eye Ltd.

Battery pack designer and manufacturer

Takaoka Toko Co., Ltd.

Power conversion and battery integration

Furukawa Battery Co., Ltd.

Also produces Li-ion for specific applications

Shin-Kobe Electric Machinery Co., Ltd.

Hitachi Chemical (now Showa Denko) subsidiary

Nippon Chemi-Con Corporation

Engaged in battery component production

Yokogawa Electric Corporation

Production equipment for cell manufacturing

Sumitomo Electric Industries, Ltd.

Active in solid-state battery development

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