Yamato Denki

What Yamato Denki does

Yamato Denki (ヤマト電機株式会社) is a privately held Japanese trading company (sōgō shōsha) specializing in electrical and electronic equipment materials, founded in 1972 and headquartered in Nerima-ku, Tokyo. The company distributes over 600,000 SKUs across more than 100 manufacturer partners, including major Japanese brands such as Panasonic Electric Works, Mitsubishi Electric, and Toshiba LighTEC, supplying wiring, cables, distribution equipment, lighting, HVAC, and information/telecom equipment to electrical construction companies, infrastructure operators, and commercial/residential property owners across the Greater Tokyo area, Osaka, and Sendai. Distribution is executed through approximately 38 sales offices and three proprietary product centers (Nerima, Koto, Niiza), supported by a direct field sales force, an e-commerce storefront (YAMATO e-shop), and wholly owned group companies Security House (security systems), Three Fields (video cloud/IoT), and Musashi Denki (Aichi distribution), plus overseas subsidiaries in Indonesia and Vietnam.

Revenue is generated primarily through per-transaction hardware sales (quote-based pricing), supplemented by service and energy-related offerings. The company's most differentiated product is the proprietary e-Reducer I (イーリデューサーワン) energy management system, launched in August 2025, which provides real-time, manufacturer-agnostic visualization and optimization of building-wide electrical consumption, including demand prediction alerts and per-equipment monitoring, targeting customers pursuing decarbonization. Adjacent offerings include solar power generation (Yamato Denki owns approximately 3.35MW across three plants and has supported ~30MW of customer installations cumulatively), battery storage systems, the heatstroke prevention cloud-video-and-sensor solution (launched August 2025), and a 2025 referral partnership with ASUENE for CO2 emissions visualization. FY2025 reported annual revenue was ¥382 billion, with 514 employees as of April 2026, up from 486 a year earlier.

Name

Yamato Denki

Legal name

ヤマト電機株式会社 (YAMATODENKI Co.,Ltd.)

Website

https://yamatodenki.co.jp

Company type

Private

Founded year

1972

Operating status

Operating

Headcount range

251–500 employees

Short description

Yamato Denki is a privately held Japanese electrical equipment materials trading company (founded 1972) distributing 600,000+ SKUs across 100+ manufacturers to electrical contractors, infrastructure operators, and property owners in the Greater Tokyo, Osaka, and Sendai regions, with proprietary energy management, solar, and security solutions delivered through 38+ offices and group subsidiaries.

Ownership category

akta.pro rank

Product category

Electrical Equipment Distribution

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Chillers, Boilers & Central Plant Operations (BPABACAG)

Keywords

• Electrical equipment distribution
• Energy management systems
• Electrical construction materials
• Solar power systems
• Building electrical solutions

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices36 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Personnel, Marketing or Sales, Technology or R&D, Supply Chain, Infrastructure

Revenue model

1. Electrical Equipment Materials Distribution: Yamato Denki distributes electrical equipment materials (wiring, cables, distribution equipment, lighting, HVAC, information/telecom equipment) to electrical construction companies, electronics manufacturers, and telecom infrastructure companies across the Tokyo metropolitan area, Osaka prefecture, and Miyagi prefecture. Handles over 600,000 items across more than 100 partner manufacturers. Revenue model is based on product sales with pricing determined per transaction.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Yamato Denki is a wholesale trading company that distributes over 600,000 electrical equipment materials items across more than 100 manufacturer partners to electrical construction companies, infrastructure operators, and building owners throughout Japan. The company also develops and sells its proprietary e-Reducer I Energy Management System, operates solar power generation and battery storage businesses, and provides security and video cloud solutions through its group companies. Its one-stop model covers upstream design through on-site construction, serving high-rise buildings, commercial facilities, factories, schools, roads, railways, airports, and residential spaces.

Product overview

Yamato Denki is an electrical equipment materials trading company (電設資材の総合商社) with over 50 years of history, offering a comprehensive portfolio centered on proprietary energy management products and electrical equipment materials distribution. The core product is the proprietary e-Reducer I energy management system, which provides real-time energy visualization and optimization. The company also operates solar power generation businesses, offers security solutions through Security House, and provides video cloud services through Three Fields. The product portfolio spans energy management hardware (e-Reducer I), renewable energy systems (solar, batteries), complete electrical equipment materials, IoT/M2M systems under development, and security/video cloud services through group companies. The company serves construction, infrastructure, commercial, and residential sectors across the Tokyo metropolitan area, Osaka, and Sendai regions.

Differentiator

Problem solved

Functional benefit

Products and services

• e-Reducer I (イーリデューサーワン) Proprietary energy management system (EMS) that visualizes and optimizes building-wide electrical energy consumption in real-time. Collects receiving power and equipment-level consumption data to enable demand monitoring, alert notifications, and continuous energy optimization for decarbonization. Features manufacturer-agnostic equipment integration, power demand monitoring, target power setting with continuous monitoring, demand prediction alerts, and per-equipment consumption measurement.
• Solar Power Generation Systems (太陽光発電システム)

Quantifiable outcome

• Cumulative solar power plant construction support of approximately 30MW
• +3 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability5 records

Feature2 records

Partnerships

Eight partnerships are on record, tiered minor and core.

• アスエネ株式会社 (ASUENE)minorGTM or Marketing Partner · 1 October 2025Yamato Denki began offering introduction services for ASUENE, Japan's No.1 cloud service for CO2 emission visualization, reduction, and reporting. As a partner introduction, Yamato Denki refers customers to ASUENE for carbon accounting needs.
• YAMATO INTERNATIONAL VIETNAM CO.,LTDcoreOthers · 1 November 2015Overseas subsidiary established November 2015 in Vietnam. Handles residential and industrial electrical equipment materials, providing flexible local response for high-rise buildings, condominiums, large commercial facilities, factories, schools, social infrastructure, residential, offices, and retail.
• PT. YAMATO INTERNATIONAL INDONESIAcoreOthers · 1 August 2015Overseas subsidiary established August 2015 in Jakarta, Indonesia. Provides interior design, construction, residential construction, and machinery/electrical works. One-stop solution from design through construction and maintenance using Japanese standards and high-quality materials adapted to local needs.
• PT. YAMATO ENGINEERING INDONESIAcoreOthers · 1 August 2015Overseas subsidiary established August 2015 in Jakarta, Indonesia. Focused on engineering and construction services including interior design, custom furniture manufacturing, and consulting for office spaces, furniture, and network/electrical installations.
• ムサシ電機株式会社 (Musashi Denki Co., Ltd.)coreOthers · 1 April 2014Related/group company established April 2014 in Nagoya, Aichi. Regional electrical equipment materials distributor operating head office in Nagoya and eastern sales office in Nagoya. Covers Aichi prefecture and surrounding areas.
• 株式会社セキュリティハウス (Security House Co., Ltd.)coreStrategic or Co-development Partner · 1 April 2014Group company providing security and crime prevention solutions. Offers systems combining deterrence against pre-planned intrusion with immediate alarm/deterrence capability for initial response. Covers office buildings, commercial facilities, logistics warehouses, factories, and solar power plants with one-stop proposals.
• スリーフィールズ株式会社 (Three Fields Corporation)coreStrategic or Co-development Partner · 1 April 2014Group company providing video cloud solutions that go beyond video surveillance. Connects network cameras and sensing equipment to the cloud for real-time video and weather data recording, alert notifications, and flexible customization. Also co-developing C2PA technology solutions for video content authenticity with Cybertrust.
• 主要仕入先 (Key Suppliers)coreOthersMajor suppliers include Panasonic Electric Works, Mitsubishi Electric Eco dan Sizai, Nito Industries, Aiphone, Endo Lighting, and Negurosu Electric. Over 100 manufacturer partners total, including major Japanese and international electrical equipment manufacturers.

Scale indicators7 records

Recent moves9 records

Expansion highlights5 records

Broad incumbents

• Rexel: Rexel is a global electrical products distributor serving commercial, industrial, and residential markets with a focus on energy efficiency and smart building solutions. Directly comparable to Yamato Denki's distribution-plus-EMS positioning.
• WESCO International: WESCO is a leading global electrical, communications, and utility distribution company serving construction, industrial, and utility customers. Highly comparable business model to Yamato Denki as a multi-line electrical equipment distributor with adjacent services (energy, communications).
• Graybar: Graybar is a large North American electrical, communications, and data networking products distributor. Comparable to Yamato Denki in being a focused, employee-owned distributor serving construction and infrastructure end markets.
• Yokogawa Electric: Yokogawa provides industrial automation, control systems, and energy management solutions globally. Comparable to Yamato Denki in the EMS/energy optimization space, particularly for industrial and infrastructure customers.
• Schneider Electric: Schneider Electric is a global leader in energy management and automation with deep presence in Japan. Comparable to Yamato Denki at the intersection of electrical equipment distribution and EMS/BMS software for buildings.
• Sonepar: Sonepar is the world's largest B2B electrical distributor, family-owned like Yamato Denki, with operations across 40+ countries. Highly comparable model of multi-line electrical equipment distribution combined with energy and digital services.

Others

• Mitsubishi Electric: Mitsubishi Electric is a major Japanese manufacturer of electrical equipment, HVAC, and building systems, and a key supplier to Yamato Denki. Comparable as an upstream partner in the Japanese electrical value chain.
• Panasonic Holdings: Panasonic is a major Japanese electrical equipment manufacturer and a key supplier to Yamato Denki. Comparable as a stakeholder and adjacent player in the Japanese electrical equipment ecosystem.

Direct peers

• Azbil Corporation: Azbil is a Japanese building automation leader offering BMS/EMS solutions for commercial and industrial facilities. Comparable to Yamato Denki's e-Reducer I energy management offering and decarbonization services for Japanese buildings.
• Uchida Yoko: Uchida Yoko is a Japanese office/facility solutions distributor providing workspace, ICT, and building equipment solutions. Comparable to Yamato Denki as a domestic Japanese distributor combining materials distribution with value-added facility services.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries6 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Yamato Denki