What Koei System does

Koei System is a Japanese IT services company that develops and maintains specialized software systems for critical infrastructure operators. Founded in 1986 in Yokohama and now headquartered in Chiyoda-ku, Tokyo, the company operates as a wholly-owned subsidiary of ID&E Holdings Group (via Nippon Koei). Its portfolio spans five core product lines: Electric Power Systems (substation centralized monitoring and control, dam remote monitoring and control, photovoltaic power generation monitoring), Construction Consulting Systems (road disaster prevention, river/sabo information, dam gate management), Business Systems (HR/payroll, attendance, logistics hub operations, web-based enterprise support), Communication Systems (telecom equipment monitoring and control, circuit management, fault information systems, IoT service infrastructure), and Embedded Systems (automotive, car navigation, cameras, audio/TV/radio, industrial IoT, autonomous driving). The company also delivers three operations and maintenance service lines: Network Operations/Maintenance for ID&E Group companies, Power System Maintenance, and Business System Operations/Maintenance.

The company's revenue model combines project-based system development with recurring maintenance contracts, supplemented by a registered temporary worker dispatch business (general labor dispatch) with a disclosed 39.3% dispatch margin rate. Customers are split between the ID&E Holdings Group (50.8% of FY2025 sales, including Japan Engineering and Niko Engineering Solutions) and the general market (49.2%, including NEC, Hitachi, Mitsui, Nissui, and government agencies reached through Nippon Koei's consulting engagements). With 112 employees, ¥1,280M of FY2025 revenue, and 35+ years of accumulated domain expertise, Koei System functions as the group's in-house IT engineering arm, combining long-term infrastructure maintenance relationships with selective product innovation such as a cloud-based Renewable Energy Management System and an Autonomous Driving Data Analysis System for government demonstration experiments.

Name

Koei System

Legal name

株式会社コーエイシステム

Website

https://koeisystem.co.jp

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

101–250 employees

Short description

Koei System is a Japanese IT services subsidiary of ID&E Holdings Group providing custom software development, operations, and maintenance for power, civil engineering, telecommunications, and embedded systems serving utilities, government agencies, and major enterprises.

Ownership category

akta.pro rank

Product category

Infrastructure Software Development

NAICS

Computer Systems Design Services (541512)

SIC

Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Control Room HMI/Visualization, Alarm & Event Management (EUADAEAJ)

Keywords

• Infrastructure software development
• Power monitoring systems
• System operations maintenance
• Embedded software development
• Disaster prevention systems

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Others

Revenue model

1. System Development Services: Custom system development spanning power infrastructure (substation monitoring, dam control, PV monitoring), civil engineering/government systems (road disaster prevention, river management), enterprise business systems (HR/payroll, logistics), telecommunications (network monitoring, IoT platforms), and embedded systems (automotive, consumer electronics). Revenue is recognized on a project/services basis with recurring maintenance contracts providing continuity.
2. System Operations & Maintenance Services: Ongoing system support, remote and on-site maintenance, helpdesk, and continuous improvement services across network infrastructure, power systems, and enterprise business systems. Provides recurring service revenue through long-term client relationships with ID&E group and enterprise customers.
3. Temporary Staffing / Dispatch Services: Registered temporary worker dispatch services (一般労働者派遣事業). The company's dispatch margin rate is disclosed as 39.3%, indicating a portion of revenue derives from staffing/dispatch margin income.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

Koei System develops and operates custom software systems for critical social infrastructure. Its five system development lines cover electric power (substation monitoring, dam remote monitoring, photovoltaic monitoring), construction consulting (road disaster prevention, river/sabo information, dam gate management), enterprise business systems (HR/payroll, attendance, logistics), telecommunications (network monitoring, IoT platforms), and embedded systems (automotive, consumer electronics, industrial IoT). The company also delivers three operations & maintenance service lines and registered temporary staffing services to its customers in Japan.

Product overview

Koei System is a software development and IT services company providing total solutions from system development to operations and maintenance. The company offers five core product lines: Electric Power Systems (monitoring and control systems for substations, dams, and solar power), Construction Consulting Systems (disaster prevention and infrastructure management), Business Systems (HR/payroll, logistics), Communication Systems (telecom infrastructure), and Embedded Systems (automotive, IoT). Additionally, they provide three specialized operations and maintenance services: Network Operations/Maintenance for ID&E Group companies, Power System Maintenance, and Business System Operations/Maintenance. The company also has specific implementation examples including a Renewable Energy Management System and an Automated Driving Data Analysis System. All services are delivered as custom solutions tailored to customer needs in the infrastructure, utilities, and communications sectors.

Differentiator

Problem solved

Functional benefit

Products and services

• Electric Power Systems (電力系システム) Custom software for monitoring and controlling electric power infrastructure, including substation centralized monitoring and control systems, dam remote monitoring and control systems, and photovoltaic power generation monitoring systems. Targeted at electric power operators and energy infrastructure customers, including Niko Engineering Solutions within the ID&E Holdings Group.
• Construction Consulting Systems (建設コンサル系システム) Information systems supporting civil engineering consulting, including road disaster prevention information systems, river and sabo (sediment control) information provision systems, and dam and river gate management support systems, plus technical information and literature provision systems. Targeted at government and public-sector clients via Japan Engineering's consulting projects.
• Business Systems (業務系システム) Enterprise software including HR and payroll systems, attendance management systems, logistics hub operations management systems, and various web-based support systems. Targeted at general enterprise customers, including NEC, Hitachi, Mitsui, and Nissui.
• Communication Systems (通信系システム) Custom software for telecommunications carriers, including communication equipment monitoring and control systems, communication line management systems, fault information management systems, and IoT service infrastructure development. Targeted at major Japanese telecommunications carriers and their system integrators.
• Embedded Systems (組込系システム) Embedded software development for mobile devices, home appliances, automobiles, and industrial IoT, including autonomous driving systems, car navigation, cameras, and audio equipment such as TVs and radios. Targeted at consumer electronics, automotive, and industrial IoT manufacturers.
• Network Operations & Maintenance (ネットワーク運用・保守) Network operations and maintenance services for ID&E Holdings Group companies, including on-site and remote support, network-related helpdesk services, and improvements to network system reliability. Targeted at group affiliates relying on Koei System as their designated network support arm.
• Power System Maintenance (電力システム保守) Maintenance services for power systems, including customer communication, inquiry response, software and hardware repair and adjustment, and parts replacement to ensure reliable system operation. Targeted at power infrastructure operators and Niko Engineering Solutions.
• Business System Operations & Maintenance (業務システム向け運用・保守) Operations and maintenance services for enterprise business systems, delivered on-site or remotely, including helpdesk support, system modifications, and feature additions through ongoing software development. Targeted at general enterprise customers running Koei System-developed business systems.
• Renewable Energy Management System (再生可能エネルギー管理システム) Cloud-based management system for renewable energy assets covering solar and small-scale hydroelectric power generation, developed under Japan Engineering Energy Solutions, providing browser-based information delivery and equipment data collection. Targeted at renewable energy power producers.
• Automated Driving Data Analysis System (自動走行データ分析システム) System for analyzing data from automated driving tests, visualizing and analyzing driving trajectories, speed, signal information, and dashcam footage from government demonstration experiments. Targeted at government agencies and mobility researchers running autonomous driving trials.
• Registered Temporary Worker Dispatch Services (一般労働者派遣事業) Registered temporary worker dispatch services under Japan's Labor Dispatch Act, providing engineering and IT staff to customers as a separate staffing line alongside the software development business, with a disclosed dispatch margin rate of 39.3%.

Quantifiable outcome

• ISO/IEC 27001:2013 certification achieved (2009), demonstrating systematic information security management.
• +1 more outcomes

Named customers6 records

Segments4 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature9 records

Partnerships

Five partnerships are on record, tiered core and minor.

• ID&Eホールディングス株式会社 (ID&E Holdings Co., Ltd.)coreStrategic or Co-development Partner · 1 January 2023ID&E Holdings is the ultimate parent company of Koei System. Following the 2023 restructuring, Koei System became part of the ID&E Holdings Group. ID&E Holdings leads the group's mission of 'making the world a better place' (世界をすみよくする) through engineering, digital, and energy solutions. Koei System serves as the group's primary software development and maintenance arm for power infrastructure and enterprise systems.
• 日本工営株式会社 (Japan Engineering Co., Ltd.)coreStrategic or Co-development PartnerJapan Engineering is a major group company and the primary strategic partner. Koei System develops and maintains systems for Japan Engineering's civil engineering consulting projects including road disaster prevention, river management, and dam gate control systems for government clients. Became a wholly-owned subsidiary of Japan Engineering in 2012, and joined ID&E Holdings group in 2023.
• 日本工営エナジーソリューションズ株式会社 (Niko Engineering Solutions Co., Ltd.)coreStrategic or Co-development PartnerNiko Engineering Solutions is the group company for energy infrastructure systems. Koei System develops and maintains power monitoring control systems, substation management, dam remote monitoring, and PV monitoring systems on behalf of Niko Engineering Solutions. Represents a core vertical in Koei System's business.
• 日本電気株式会社 (NEC Corporation)minorChannel Partner/ Reseller/ DistributorNEC is listed as a major business partner and client. Koei System receives project engagements through or collaborates with NEC, contributing to telecommunications and infrastructure system development within the broader technology ecosystem.
• 株式会社日立製作所 (Hitachi, Ltd.)minorChannel Partner/ Reseller/ DistributorHitachi is listed as a major business partner and client. Koei System receives project engagements through or collaborates with Hitachi, contributing to power and industrial system development.

Scale indicators5 records

Recent moves10 records

Expansion highlights6 records

Broad incumbents

• NTT Data Corporation: Japan's largest system integrator serving government, telecom, and infrastructure clients with end-to-end IT services. Comparable to Koei System's enterprise systems and government-facing work, with the scale and breadth to displace smaller niche players.
• Fujitsu Limited: Major Japanese IT services and hardware provider serving government, utilities, and enterprise clients. Comparable to Koei System's government systems, business systems, and infrastructure IT services, but at much greater scale.
• Mitsubishi Electric Corporation: Japanese industrial electronics major providing SCADA, substation automation, and power systems globally. Comparable technology overlap with Koei System's power infrastructure offerings, though vastly larger scale and broader product portfolio.
• Hitachi, Ltd. Major Japanese conglomerate with extensive power infrastructure, SCADA, and IT services portfolio. Comparable as a competitor and major client for Koei System, with overlapping capabilities in substation automation, grid management, and enterprise systems.
• NEC Corporation: Major Japanese IT and network solutions provider with strong presence in government, telecom, and public infrastructure systems. Comparable as both competitor and major client for Koei System, particularly for telecom and government-facing projects.
• Toshiba Corporation (Infrastructure Systems): Japanese conglomerate with significant power transmission, substation, and SCADA systems divisions. Comparable to Koei System's substation monitoring/control work at much larger scale, with broader international reach.

Direct peers

• Oki Electric Industry Co., Ltd. Japanese IT/electronics company providing telecom infrastructure, power systems, and embedded solutions. Closely comparable to Koei System's mix of telecom systems, IoT infrastructure, and embedded software for power/communications clients.
• Yokogawa Electric Corporation: Japanese industrial automation and SCADA specialist serving power, water, and process industries. Directly comparable to Koei System's substation monitoring, dam control, and power infrastructure software work, though Yokogawa operates at significantly larger global scale.
• Meidensha Corporation: Japanese power systems manufacturer and integrator providing substation equipment, protection/control systems, and SCADA solutions. Comparable to Koei System's power infrastructure focus with similar domain expertise in protection and control for substations and renewable assets.
• NS Solutions Corporation: Japanese IT services subsidiary of Nippon Steel, focused on industrial and infrastructure systems. Comparable to Koei System in operating as a captive-leaning IT services arm with deep domain expertise in operational technology and infrastructure.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/koei-system

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Koei System