Nichiden Kogyo

What Nichiden Kogyo does

Nichiden Kogyo (日電工業株式会社, "NDK") is a Japanese specialty construction and maintenance services company serving the Chugoku Electric Power Group. Founded in 1967 in Hiroshima and operating as a 100% subsidiary of Chuden Plant Co., Ltd. since 2005, NDK delivers integrated construction, disassembly inspection, and maintenance services for power generation and transformation equipment across thermal, hydroelectric, and nuclear facilities. The company operates from a Hiroshima headquarters and 14-15 business locations across five Chugoku-region prefectures (Tottori, Shimane, Okayama, Hiroshima, Yamaguchi), with most sites co-located within or adjacent to client power plants.

The company's service portfolio spans four technical domains — electrical construction (wiring, cable installation, insulator replacement, turbine-generator inspection), control systems (control cables, optical fiber, control panels, valve inspection), mechanical engineering (boiler inspection, environmental equipment, pumps, piping), and civil engineering — plus fire equipment inspection and maintenance. Service execution is anchored by a workforce of 226 employees (177 regular employees) holding extensive statutory certifications: 50 first-class electrical construction management engineers, 18 first-class electrical engineers, 33 second-class electrical engineers, and specialized technicians for boilers, cranes, fire equipment, and non-destructive testing. NDK also operates a Sanyo-Onoda Factory providing equipment fabrication capability.

NDK generates revenue through project-based contracts and ongoing maintenance service agreements with its primary client, Chugoku Electric Power Co., Ltd., and (to a lesser extent) general industrial facilities requiring electrical and mechanical construction expertise. Pricing is not publicly disclosed and is determined through project quotes. The five-year average sales figure is ¥3.54 billion with ¥260 million in operating profit (2020-2024), reflecting a stable, mature regional services franchise rather than a growth-stage operation.

Name

Nichiden Kogyo

Legal name

日电工業株式会社

Website

https://nichiden-k.co.jp

Company type

Private

Founded year

1967

Operating status

Operating

Headcount range

101–250 employees

Short description

Nichiden Kogyo is a Japanese specialty construction and maintenance services firm, wholly owned by Chuden Plant (Chugoku Electric Power Group), providing electrical, control, mechanical, and civil engineering services to power generation facilities across the Chugoku region.

Ownership category

akta.pro rank

Product category

Power Infrastructure Construction and Maintenance Services

NAICS

Power and Communication Line and Related Structures Construction (237130), Electric Power Generation, Transmission and Distribution (2211), Electric Bulk Power Transmission and Control (221121)

SIC

Electrical Industrial Apparatus (3620), Switchgear & Switchboard Apparatus (3613)

akta.pro primary industry

Balance-of-Plant (BOP) & Civil Works for Power Plants (EUAEAAAL)

akta.pro secondary industries

High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA), Rotating Equipment Inspection & Vibration Diagnostics (Turbines, Compressors, Pumps) (EUAEAHAJ), Pressure Equipment, Boilers & Heat Exchanger Inspection (EUAEAHAB)

Keywords

• Power facility construction
• Electrical maintenance services
• Power plant engineering
• Control systems installation
• Mechanical equipment inspection

Headquarters

HQ city

Hiroshima

HQ country

Japan

HQ region

Asia

Offices15 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Supply Chain

Revenue model

1. Power Facility Construction Services: Construction services for power generation and transformation equipment at thermal, hydroelectric, and nuclear power plants. Projects include new construction, upgrades, and modifications to electrical, control, and mechanical systems.
2. Power Facility Maintenance Services: Ongoing maintenance and inspection services for power generation and transformation equipment, including scheduled disassembly inspections, repairs, and emergency response. The primary business activity generating recurring service revenue.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Nichiden Kogyo provides construction, maintenance, and inspection services for power generation and transformation facilities, including electrical work (wiring, cable installation, equipment disassembly inspection), control systems work (control panels, optical fiber cabling, valve inspection), mechanical work (boilers, pumps, blowers, piping), civil engineering, and fire equipment inspection. Services cover thermal, hydroelectric, and nuclear power plants operated primarily by Chugoku Electric Power Co., Inc. across the Chugoku region of Japan.

Product overview

Nichiden Kogyo is a specialized construction and maintenance company serving the China Electric Power Group. The company provides integrated services across five main areas: electrical construction (including steel structure assembly, wiring, cable installation, and equipment installation), control systems work (control cables, optical fiber, and control panels), mechanical construction (boilers, environmental equipment, pumps, blowers, and piping), civil engineering, and fire equipment maintenance. Operating from headquarters in Hiroshima with 14 business offices across five prefectures in the Chugoku region, the company supports power generation facilities including thermal, hydroelectric, and nuclear power plants. The company emphasizes 50 years of experience and expertise in serving the China Electric Power Group.

Differentiator

Problem solved

Functional benefit

Products and services

• Electrical Construction and Maintenance Services Comprehensive electrical construction and maintenance services for power generation and transformation facilities, including steel structure assembly, power cable installation, equipment installation and disassembly inspection, insulator replacement, turbine-generator disassembly inspection, and high/low voltage motor inspection. Customers are power utility operators, primarily Chugoku Electric Power Co., Inc.
• Control Systems Construction Services Installation and maintenance of control cable systems, optical fiber cable systems, control panel mounting, and control valve disassembly/inspection for power generation facilities. Customers are power utility operators, primarily Chugoku Electric Power Co., Inc.
• Mechanical Construction Services Boiler inspection, environmental equipment installation/disassembly, pump and blower installation and inspection, and piping work for power plants and various industrial facilities. Customers are power utility operators and general industrial facility operators.
• Civil Engineering Services Civil engineering construction work supporting power infrastructure facilities, including site work associated with thermal, hydroelectric, and nuclear power plants. Customers are power utility operators, primarily Chugoku Electric Power Co., Inc.
• Fire Equipment Inspection and Maintenance Fire protection equipment inspection and maintenance services for power facilities and other sites, including installation of river and road monitoring devices. Customers are power utility and industrial facility operators.

Quantifiable outcome

• Average monthly overtime of 16.1 hours (FY2024), indicating efficient project management
• +2 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core and minor.

• 中国電力株式会社 (Chugoku Electric Power Co., Ltd.)coreStrategic or Co-development PartnerParent company within the Chugoku Electric Power Group. NDK operates as a specialized construction company providing power facility construction and maintenance services exclusively for group companies. Established as a subsidiary of Chugoku Plant Co., Ltd. (中電プロダクト株式会社) since July 2004 with 100% ownership.
• 中電プロダクト株式会社 (Chugoku Plant Co., Ltd.)coreStrategic or Co-development PartnerParent company holding 100% of NDK shares. Part of the Chugoku Electric Power Group. NDK became a subsidiary of Chugoku Plant Co., Ltd. in June 2000 and has been a consolidated subsidiary of Chugoku Electric Power Co., Ltd. since April 2002.
• SAFE Consortium (SAFEコンソーシアム)minorOthersSafety action promotion consortium. NDK joined as a member endorsing the 'safety action promotion for the happiness of all employees' initiative.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Kyudenko Corporation: Kyushu Electric Power-affiliated electrical construction firm. Comparable as a regional utility-group captive doing electrical construction and maintenance for power plants and substations.
• Chudenko Corporation: Chugoku-region-headquartered electrical construction firm with deep ties to Chugoku Electric Power Group. Closest peer to NDK given same parent-group context and overlapping electrical construction/maintenance scope for power utilities.
• Kandenko Co., Ltd. Kansai Electric Power-affiliated electrical infrastructure construction firm with substantial power and substation work. Direct comparable on electrical construction for utilities and grid infrastructure.
• Nippon Densetsu Kogyo Co., Ltd. Electrical construction firm specializing in railway and power utility infrastructure. Comparable for substation, transmission, and power-facility electrical construction and maintenance.
• Toko Electrical Construction Co., Ltd. Electrical construction firm serving utilities and industrial clients across substations and power infrastructure. Directly comparable to NDK in electrical EPC scope and customer mix.
• Kinden Corporation: One of Japan's largest electrical construction contractors serving power utilities, substations, and industrial facilities. Comparable in core electrical EPC and maintenance offerings to NDK at greater scale.
• Yurtec Corporation: Tohoku Electric Power-affiliated electrical construction company focused on power facility construction and maintenance. Directly comparable as a utility-group captive doing similar electrical EPC and plant services.

Broad incumbents

• Sanki Engineering Co., Ltd. Mechanical, electrical, and plumbing construction firm serving industrial plants and facilities. Comparable on the mechanical/EPC portion of NDK's scope for industrial clients.
• Takasago Thermal Engineering Co., Ltd. HVAC and industrial plant services firm with thermal/nuclear plant maintenance work. Comparable on plant-level mechanical services and recurring maintenance, though broader than NDK's portfolio.
• Tobishima Corporation: Major Japanese general construction company with a power-plant EPC practice. Overlaps with NDK on power generation facility construction but at much larger scale and broader portfolio.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Instagraminstagram.com/ndksaiyo

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 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 Nichiden Kogyo