Digital Substations Market

How big is the Digital Substations Market in 2026?

The Digital Substations Market is projected to expand at a CAGR of 7.4% between 2026 and 2036. Market value rises from USD 8.3 billion in 2025 to USD 8.9 billion in 2026 and USD 18.2 billion by 2036. 

The digital substations market was valued at USD 8.3 billion in 2025. It reaches USD 8.9 billion in 2026 and is forecast at USD 18.2 billion by 2036. Substation automation systems hold 18.0% of component demand, while process-level architecture accounts for 43.0%. The market connects digital protection, control, communication and monitoring within substation projects. Buyers need a working system whose devices, network and engineering records fit the utility’s operating requirements. The market is forecast to expand at 7.4% CAGR over 2026 to 2036. Digital substations combine smart grid technology with networked measurement, protection and control functions to operate electrical infrastructure.

IEC 61850 provides a communication and system framework for intelligent electronic devices in utility automation. The customer still needs to define how those devices are configured, connected and tested within its project. Commercial demand spans equipment, software and engineering that bring these functions together in a new installation or an upgrade to an existing station. [2] Digital-substation projects serve several operating settings. In July 2025, Siemens announced that its protection, automation and communication technology would support 16 digital transmission substations in Australia’s Central-West Orana Renewable Energy Zone. Hitachi supplied a fully digital system to East Japan Railway feeder substations in November 2025. The electrical installation and the operator’s practices determine how such architectures are configured and delivered. [3, 4]

Key Market Trends & Insights

• Substation automation systems hold 18.0% of component demand in 2026. 
• Process-level architecture accounts for 43.0% of architecture demand. 
• Transmission substations represent 52.0% of application demand; utilities account for 74.0% by end use. 
• High-voltage substations hold 48.0% by voltage level, and new installations represent 62.0% by installation. 

Regional Highlights

• Fastest-growing profiled country: South Korea (5.5% CAGR, 2026 to 2036). 
• By country: Japan (5.4%) follows, while the United Kingdom records 5.0%. 
• Utilities and other operators configure digital systems around their electrical installations, engineering practices and control requirements.

Market Size & Forecast

Table 1: Market Size and Forecast for the Digital Substations Market (USD billion and percentage), 2025 to 2036

Metric	Value
2025 Market Size	USD 8.3 billion
Estimated Market Size in 2026	USD 8.9 billion
Projected Market Size by 2036	USD 18.2 billion
CAGR, 2026 to 2036	7.4%
Added Revenue, 2026 to 2036	USD 9.3 billion
Market Expansion Multiple	2.0x

Digital Substations Market Industry and Operating Indicators

Published product and operating developments describe the choices and requirements suppliers face.

Table 2: Industry Indicators for the Digital Substations Market, 2025 to 2026

Indicator	Data Point	Why It Matters	Source
Transmission project	Siemens announced its role in ACEREZ’s planned 16 digital transmission substations on July 2, 2025.	Provides a planned deployment connecting digital protection and control with renewable-energy transmission.	[3]
Railway deployment	Hitachi supplied a fully digital system to East Japan Railway feeder substations in November 2025.	Shows digital architectures applied within railway electrical infrastructure.	[4]
Network analysis tools	OMICRON released DANEO Control 6.00 with MBX2 on May 29, 2026.	Adds network-analysis capability for digital-substation engineering and operation.	[18]

Analyst Perspective

A digital substation is purchased as an operating system. The buyer needs to know how measurement, protection and communication work together, how the configuration is tested and how changes will be managed after commissioning. Those interfaces shape the supplier’s role across the project.

- Nikhil Kaitwade, Principal Analyst at Future Market Insights

How is the Digital Substations Market segmented?

The market is segmented by Component, Architecture, Application, End Use, Voltage Level and Installation. 

By Component: Substation Automation Systems, Communication Networks, Electrical Systems, Transformers, Busbar Systems, Protection Systems, Monitoring and Controlling Devices, Human Machine Interfaces, Programmable Logic Controllers, Other Components.

By Architecture: Process Level Architecture, Bay Level Architecture, Station Level Architecture.

By Application: Transmission Substations, Distribution Substations.

By End Use: Utility Sector, Industrial Sector.

By Voltage Level: High Voltage Substations, Medium Voltage Substations, Low Voltage Substations.

By Installation: New Installations, Refurbished Installations.

What supports substation automation systems?

Substation automation systems hold 18.0% of component demand in 2026. Buyers combine control, supervision and communication with engineering and configuration suited to the operating station. [ 5, 6]

Table 3: Component Share for the Digital Substations Market (percentage share), 2026

Component	Share (2026)
Substation Automation Systems	18.0%
Other Segments Combined	82.0%
Total	100.0%

Table 4: Component Focus and Market Growth for the Digital Substations Market, 2026 to 2036

Metric	Value
Global CAGR (2026 to 2036)	7.4%
Featured Category	Substation Automation Systems

Automation systems connect operational information with control and supervision. A project can include intelligent electronic devices, controllers, interfaces and the communication arrangement linking them. Eaton’s SMP platform documents data-concentration and protocol functions, while Hitachi Energy offers tailored substation automation architectures. The customer needs to decide how the system interacts with local protection and the control centre. Procurement includes the engineering required to make those functions work together, with a configuration that the operator can understand and maintain after the station enters service. [5, 6]

• Substation automation systems hold 18.0% of component demand in 2026. 
• Eaton documents data-concentration, protocol translation and interface functions within SMP. [5]

Why does process-level architecture lead?

Process-level architecture accounts for 43.0% of architecture demand in 2026. Measurement interfaces, timing and process-bus communication need to work with digital protection and control. [1, 4, 7]

Process-level architecture connects measurements, circuit breaker monitoring and equipment interfaces with digital protection and control. Merging units and process-bus arrangements move information from the primary installation into the digital system. Hitachi’s railway deployment includes sampled values and centralized protection and control, while SEL documents digital secondary systems using intelligent devices and communications. The buyer needs to establish how these functions interact and how the complete arrangement will be tested. A process-level design therefore involves the electrical interface, timing and communication as well as the individual device. [4, 7]

• Process-level architecture accounts for 43.0% of architecture demand in 2026. 
• Hitachi’s November 2025 railway system uses a process bus with sampled values. [4]

What supports transmission-substation demand?

Transmission substations connect digital protection and control with infrastructure serving the wider network. A utility needs the station to fit its protection philosophy, communication arrangements and operating procedures. The Central-West Orana project provides a planned example linking digital substations with a renewable-energy transmission network. Equipment selection needs to be coordinated with project engineering and commissioning. The supplier’s commercial role can cover several stages, from defining interfaces to testing the installed arrangement and handing over the information needed for future operation. [3]

• Transmission substations represent 52.0% of application demand in 2026. 
• Siemens’ July 2025 ACEREZ announcement identifies 16 planned digital transmission substations. [3]

Why do utilities lead end use?

Utilities need to coordinate substation projects with the network they operate and the systems used by their control teams. Digital functions can provide measurements, equipment status and control interfaces, but those functions need to fit established operating practices. The operator also needs configuration records and an agreed way to manage changes over the installation’s life. Supplier selection therefore involves system capability and delivery support. Industrial customers face related integration tasks within their facilities, with their own requirements for power distribution, power quality equipment and operational continuity. [ 6, 7]

• Utilities account for 74.0% of end-use demand in 2026. 
• Industrial facilities form a separate end-use group in the detailed taxonomy. 

How does voltage level shape procurement?

The voltage class provides one part of the electrical project’s specification. Digital protection, control and monitoring still need to be matched with the primary equipment and the operator’s system requirements. Suppliers offer different capabilities across transmission and distribution. ABB’s Relion and centralized protection solutions address distribution protection and control, while Hitachi Energy documents digital-substation portfolios for new and retrofit installations. The buyer needs a complete architecture suited to the station, with equipment ratings and interfaces established within the project design. [6, 8]

• High-voltage substations hold 48.0% of voltage-level demand in 2026. 
• ABB documents Relion protection and centralized digital-substation arrangements for distribution. [8]

Why do new installations lead?

A new installation gives the buyer an opportunity to define the digital architecture alongside the electrical station. Refurbishment requires the supplier to work with equipment and operating arrangements already present. Siemens’ Börger case documents both new panels and sensor retrofits to existing switchgear, illustrating a staged approach within an operating asset. Buyers need to connect the scope of work with outage planning and the required handover records. Testing and documentation remain relevant in both routes, even when the project changes only part of the station. [9]

• New installations represent 62.0% of installation demand in 2026. 
• Siemens’ Börger project, completed in 2025, combines new panels with retrofits to existing equipment. [9]

What drives and constrains digital-substation demand?

Grid investment and new connections support demand; integration and commissioning requirements constrain delivery; staged refurbishment and tested architectures create opportunities.

• Driver: Network projects need protection, control and communication suited to their operating requirements.
• Restraint: Multi-device integration and testing must fit project schedules and utility practices.
• Opportunity: Refurbishment can add digital functions to selected parts of an existing station.

Driver. Network planning creates a setting for new and upgraded substation projects. ENTSO-E’s TYNDP examines European infrastructure needs, while NESO’s network-planning work addresses transmission development in Great Britain. Substation suppliers need to connect these broader programs with specific project scopes and purchasing decisions. The commercial opportunity follows the equipment and systems required at the station, including digital functions that work with the operator’s network and control arrangements. A planning program provides context; project engineering determines the actual order. [10, 11]

Restraint. Devices from several suppliers must work within one protection and control arrangement. Engineering needs to establish interfaces, configuration and the conditions under which the system is tested. OMICRON documents testing and commissioning support for digital substations, including multivendor projects. The buyer needs a clear acceptance process and records that describe the installed configuration. These tasks affect delivery alongside equipment availability because the station must enter service with functions that the operator has assessed and can maintain. [12]

Opportunity. Refurbishment can introduce digital measurement or monitoring while retaining suitable parts of the primary installation. Siemens’ Börger case adds sensors to existing panels as well as installing new equipment. Such projects need a defined boundary between the work being changed and the systems remaining in operation. A supplier can support the customer through staged engineering, testing and documentation. The commercial value lies in delivering the agreed digital functions within the customer’s operating constraints and a manageable upgrade schedule. [9]

Which country and market-group CAGRs are profiled?

The outlook covers 2026 to 2036. 

Country or Market Group	CAGR 2026 to 2036
South Korea	5.5%
Japan	5.4%
European Union	5.3%
United States	5.2%
United Kingdom	5.0%

How do geographic opportunities compare?

The five profiles have closely grouped growth rates. South Korea’s grid-technology work, Japan’s digital railway and utility applications, European infrastructure planning and U.S. grid modernization provide different customer settings. Great Britain’s network-planning process addresses future transmission requirements. Suppliers need to connect those settings with local operator practices and project acceptance. The required protection, communication and testing arrangements remain specific to the station, even where companies use related product platforms across several countries. [4, 10, 11, 13, 14]

In South Korea, grid design, operation and monitoring capabilities support the technology context. In Japan, railway feeder substations provide a documented digital deployment example. In the European Union, infrastructure planning and refurbishment create different project routes. In the United States, grid modernization connects with protection and automation requirements. In the United Kingdom, transmission planning and multivendor project experience inform procurement.

Country-wise Analysis

South Korea

South Korea leads the five profiled forecasts at 5.5% CAGR through 2036. KEPCO’s current research and development strategy covers transmission and distribution design, operation, monitoring and control. These capabilities provide a context for digital-substation systems within the network. A supplier needs to fit its equipment and engineering offer with the operator’s requirements, including communication and the management of the installed configuration. The customer’s acceptance process determines how individual devices become part of a working station, with continued support relevant to maintenance and later modifications. [13]

Japan

Japan is forecast at 5.4% CAGR over 2026 to 2036. Hitachi’s November 2025 supply to East Japan Railway feeder substations provides a specific example of a fully digital system. It combines a process bus with centralized protection and control and a redundant communication arrangement. Railway applications have their own operating context, while the supplier also describes future utility opportunities. Buyers need to connect the architecture with their electrical installation and maintain the records used for operation and future upgrades. The project demonstrates delivered capability within a defined customer application. [4]

European Union

The European Union market-group outlook is 5.3% CAGR through 2036. ENTSO-E’s TYNDP provides an infrastructure-planning context across national and cross-border networks. Digital-substation work can also occur through refurbishment: Siemens’ 2025 Börger case documents new panels and sensor retrofits for a wind-farm substation. Those routes involve different project boundaries and operating constraints. Buyers need to decide which functions are being added or replaced and how they fit with the existing system. Suppliers can support the decision through documented interfaces and an engineering plan suited to the installation. [9, 10]

United States

The U.S. outlook is 5.2% CAGR over 2026 to 2036. DOE’s Grid Modernization Initiative provides a framework for work on the electricity network, while suppliers including SEL, GE Vernova and Eaton offer protection and automation capabilities. The buyer needs to connect available products with its own station design and operating practices. That can involve digital secondary systems, data concentration and communications within the same project. A utility assessing alternatives needs to establish interface requirements and testing responsibilities so that the complete architecture can enter service and be maintained. [ 5, 7, 14, 15]

United Kingdom

The United Kingdom is forecast at 5.0% CAGR through 2036. NESO’s Centralised Strategic Network Plan process addresses transmission infrastructure beyond 2030. Digital-substation suppliers also have project experience to draw on: OMICRON documents its work with SP Energy Networks and several vendors on the FITNESS pilot in Scotland. Such experience can inform testing and commissioning arrangements, while each subsequent project retains its own requirements. Buyers need to coordinate the digital architecture, supplier interfaces and operating procedures within the network project being delivered. [11, 12]

Who participates in Digital Substations Market?

Participants include Siemens, Hitachi Energy, ABB, GE Vernova, Schneider Electric, Eaton, SEL and OMICRON.

The market combines system suppliers, protection and control vendors, communication providers and testing specialists. Siemens and Hitachi Energy provide broad digital-substation capabilities. ABB, Schneider Electric and SEL offer protection and control products; GE Vernova’s GridBeats portfolio addresses digital automation, and Eaton supplies substation automation platforms. OMICRON supports testing, while Cisco provides industrial network equipment for substation environments. Their roles overlap in some projects but differ in others, making the system interfaces and delivery responsibilities part of the commercial comparison. [6, 7, 8, 12, 15, 16, 17, 18]

• System and automation portfolios: Siemens, Hitachi Energy, GE Vernova and Eaton.
• Protection and control capabilities: ABB, Schneider Electric and SEL.
• Communication and testing support: Cisco and OMICRON.

Competitive Benchmarking: Digital Substations Market

Participant	Market Role	Product or Capability	Project Position	Buyer Relevance
Siemens AG	Protection and automation	SIPROTEC, SICAM and RUGGEDCOM	Digital station architecture	System engineering and integration
Hitachi Energy	Digital-substation systems	Automation and process interfaces	New and retrofit projects	Integrated protection and monitoring
ABB	Distribution protection and control	Relion and SSC600	Digital distribution systems	Protection architecture
GE Vernova	Digital grid automation	GridBeats	Automation portfolio	Software-defined functions
Schneider Electric	Protection and control	PowerLogic P7	Station protection	Product and system interfaces
Eaton	Substation automation	SMP platform	Data concentration and control	Protocol and supervision functions
SEL	Digital secondary systems	Merging units and protection	Process and protection interfaces	Digital communication architecture
OMICRON	Testing and commissioning	Digital-substation test tools	System acceptance and analysis	Multivendor testing support

Key Developments in Digital Substations

• Siemens announced its technology role in ACEREZ’s planned 16 digital transmission substations on July 2, 2025. [3]
• Hitachi supplied a fully digital system to East Japan Railway feeder substations in November 2025. [4]
• OMICRON released DANEO Control 6.00 with MBX2 on March 20, 2026, adding network-analysis capability for digital substations. [18]

Key Players in Digital Substations

• Siemens AG
• Siemens Energy
• ABB
• GE Vernova
• Hitachi Energy
• Schneider Electric
• Toshiba Energy Systems and Solutions
• Eaton
• SEL
• Cisco Systems
• Belden
• OMICRON electronics
• NR Electric

Digital Substations Market - Report Scope

Coverage Field	Report Scope
Market Breakdown	Component; Architecture; Application; End Use; Voltage Level; Installation
Quantitative Units	Revenue in USD billion
Market Definition	Equipment, software and integrated systems for substation digital measurement, communication, protection, control and monitoring. Includes primary electrical equipment incorporated within the covered digital project.
Exclusions	Conventional substations without covered digital functions; standalone SCADA unrelated to a substation project; unrelated telecommunications infrastructure; duplicate counting of component and integrated-system sales.
Regions Covered	North America; Latin America; Western Europe; Eastern Europe; East Asia; South Asia and Pacific; Middle East and Africa
Geographic Profiles	South Korea; Japan; European Union; United States; United Kingdom
Competitive Coverage	System integration, automation, protection, communication and related testing capabilities
2025 Market Value	USD 8.3 billion
2026 Market Value	USD 8.9 billion
2036 Forecast Value	USD 18.2 billion
CAGR	7.4%
Forecast Period	2026 to 2036

Digital Substations Market - Research Framework

Research Area	Coverage
Market Coverage	Digital-substation equipment and integrated operating systems
Industry Evidence	Product documentation, standards descriptions and project announcements
Geographic Analysis	Grid planning, operator requirements and delivered project examples
Competitive Analysis	System architecture, component roles, engineering and testing support

Digital Substations Market by Segments

Digital Substations Market segmented by Component:

• Substation Automation Systems
  • Control Automation Systems
    • Remote Terminal Units
      • Intelligent Electronic Devices
    • SCADA Integration Systems
      • Grid Monitoring Platforms
      • Automation Control Software
  • Communication Networks
    • Fiber Optic Communication
      • High Speed Data Transfer
      • Secure Grid Communication
    • Industrial Ethernet Networks
      • Real Time Communication
      • Interoperability Systems
  • Electrical Systems
    • Switchgear Systems
      • Gas Insulated Switchgear
      • Air Insulated Switchgear
    • Power Distribution Equipment
      • Circuit Protection Systems
      • Load Distribution Systems
  • Transformers
    • Power Transformers
      • Transmission Transformers
      • Distribution Transformers
    • Instrument Transformers
      • Current Transformers
      • Voltage Transformers
  • Busbar Systems
    • Conventional Busbars
      • Single Busbar Systems
      • Double Busbar Systems
    • Digital Busbar Monitoring
      • Fault Detection Systems
      • Load Monitoring Systems
  • Protection Systems
    • Relay Protection Systems
      • Distance Protection Relays
      • Differential Protection Relays
    • Fault Monitoring Systems
      • Arc Flash Protection
      • Overcurrent Protection
  • Monitoring and Controlling Devices
    • Condition Monitoring Devices
      • Transformer Health Monitoring
      • Circuit Breaker Monitoring
    • Control Devices
      • Voltage Control Systems
      • Load Balancing Systems
  • Human Machine Interfaces
    • Control Panels
      • Operator Interface Displays
      • Touchscreen Systems
    • Remote Monitoring Interfaces
      • Centralized Monitoring
      • Grid Visualization Platforms
  • Programmable Logic Controllers
    • Grid Automation Controllers
      • Substation Process Control
      • Equipment Synchronization
    • Industrial Automation Controllers
      • Load Control Applications
      • Power Distribution Management
  • Other Components
    • Sensors and Measurement Devices
      • Temperature Sensors
      • Current Monitoring Devices
    • Backup Power Systems
      • Battery Systems
      • Emergency Power Supply

Digital Substations Market segmented by Architecture:

• Process Level Architecture
  • Field Level Automation
    • Process Bus Systems
      • Merging Units
    • Sensor Integration Systems
      • Digital Measurement Systems
      • Real Time Data Acquisition
  • Bay Level Architecture
    • Bay Control Systems
      • Protection and Control Units
      • Integrated Bay Controllers
    • Feeder Management Systems
      • Load Flow Management
      • Fault Isolation Systems
  • Station Level Architecture
    • Centralized Station Control
      • SCADA Platforms
      • Energy Management Systems
    • Substation Communication Platforms
      • Data Concentrators
      • Control Center Integration

Digital Substations Market segmented by Application:

• Transmission Substations
  • High Voltage Transmission
    • Long Distance Transmission
      • Grid Interconnection
    • Grid Stability Management
      • Frequency Regulation
      • Power Flow Control
  • Distribution Substations
    • Urban Power Distribution
      • Smart City Networks
      • Commercial Distribution
    • Rural Distribution Systems
      • Remote Grid Connectivity
      • Microgrid Integration

Digital Substations Market segmented by End Use:

• Utility Sector
  • Public Power Utilities
    • Transmission Utilities
      • Distribution Utilities
    • Renewable Energy Utilities
      • Wind Power Integration
      • Solar Grid Integration
  • Industrial Sector
    • Manufacturing Facilities
      • Industrial Power Distribution
      • Process Industry Applications
    • Energy Intensive Industries
      • Mining Operations
      • Oil and Gas Facilities

Digital Substations Market segmented by Voltage Level:

• High Voltage Substations
  • Above 220 Kilovolt Systems
    • Transmission Networks
      • Bulk Power Transfer
    • Extra High Voltage Systems
      • Grid Backbone Infrastructure
      • Interregional Transmission
  • Medium Voltage Substations
    • 33 Kilovolt to 220 Kilovolt Systems
      • Industrial Distribution
      • Urban Power Networks
    • Commercial Power Systems
      • Utility Distribution Networks
      • Renewable Energy Connections
  • Low Voltage Substations
    • Below 33 Kilovolt Systems
      • Local Distribution Networks
      • Commercial Buildings
    • Small Scale Grid Systems
      • Residential Distribution
      • Microgrid Applications

Digital Substations Market segmented by Installation:

• New Installations
  • Greenfield Projects
    • New Transmission Infrastructure
      • Smart Grid Projects
    • Renewable Integration Projects
      • Solar Substations
      • Wind Farm Substations
  • Refurbished Installations
    • Brownfield Upgrades
      • Legacy Grid Modernization
      • Digital Retrofit Projects
    • Equipment Replacement Projects
      • Protection System Upgrades
      • Automation Enhancements

Digital Substations Market by Region

• North America
  • United States
  • Canada
  • Mexico
• Latin America
  • Brazil
  • Chile
  • Rest of Latin America
• Western Europe
  • Germany
  • United Kingdom
  • Italy
  • Spain
  • France
  • Nordics
  • Benelux
  • Rest of Western Europe
• Eastern Europe
  • Russia
  • Poland
  • Hungary
  • Balkan and Baltic Countries
  • Rest of Eastern Europe
• East Asia
  • China
  • Japan
  • South Korea
• South Asia and Pacific
  • India
  • ASEAN
  • Australia and New Zealand
  • Rest of South Asia and Pacific
• Middle East and Africa
  • Saudi Arabia
  • Other GCC Countries
  • Türkiye
  • South Africa
  • Other African Union Countries
  • Rest of Middle East and Africa

Research Sources and Bibliography

• [1] International Electrotechnical Commission. IEC 61850-5: Communication and System Requirements.
• [2] Siemens (2025, July 2). ACEREZ Digital Substations.
• [3] Hitachi (2026). Power Grids Technology: East Japan Railway Deployment, November 2025.
• [4] Eaton. SMP Substation Automation Platform.
• [5] Hitachi Energy. Digital Substations and Automation Systems.
• [6]  Schweitzer Engineering Laboratories. Substation Automation and Digital Secondary Systems.
• [7] ABB. SSC600 Digital Substation Control and Protection.
• [8] Siemens. Börger Digital Substation, Completed 2025.
• [9] ENTSO-E. TYNDP 2024 Electricity Infrastructure Plan.
• [10]  NESO (2025, June 30). Centralised Strategic Network Plan Consultation.
• [11] OMICRON. Digital Substation Testing and Commissioning.
• [12] KEPCO. Grid Research and Development Strategy.
• [13]  U.S. Department of Energy. Grid Modernization Initiative.
• [14] GE Vernova. GridBeats Digital Automation Portfolio.
• [15] Siemens. Digital Substation Portfolio.
• [16] Schneider Electric. PowerLogic P7 Protection and Control Platform.
• [17] Cisco. Industrial Ethernet 2000U Substation Switches.
• [18] OMICRON (2026, May 20). DANEO Control 6.00 with MBX2.

This Report Answers

• What was the digital substations market value in 2025?
• How large is the market in 2026 and what is forecast for 2036?
• Why do automation systems and process-level architecture matter?
• What supports transmission-substation and utility demand?
• How do new and refurbished installations differ?
• Which country and market-group growth rates are profiled?
• Which suppliers provide system, component and testing capabilities?
• What connects digital architecture with commissioning and operation?