Locomotive Traction Transformer Market Size - By Type, By Mounting Position, By Rolling Stock, By End Use, By Cooling, Growth Forecast, 2025 - 2034

Locomotive Traction Transformer Market Size

The global locomotive traction transformer market was valued at USD 1.2 billion in 2024 and is estimated to register a CAGR of 7.1% between 2025 and 2034. The growing implementation of electric locomotive systems is raising the demand for locomotive traction transformers. Railway systems are replacing diesel operated locomotives with electric powered locomotives, which in turn, improves energy efficiency and reduces emissions. This also increases the demand for traction transformers that are used for electric power supply to locomotives propulsion systems.
 

Electrification of railways, especially the construction of high speed rail lines, results in an increased demand for these transformers. These changes are also driven by government funding towards electric based locomotives as well as shifts to more environmentally friendly transport solutions. Rail Vikas Nigam Limited (RVNL), a public sector undertaking in India won a contract of USD 13.5 million from Central Railway for providing electrification works for elevation of Nagpur division. This project aims to modify the overhead electrification system from the 1x25kV electric traction system to 2x25kV by incorporating additional loading capacity with the target of 3000 metric tons. This contract was undertaken in March 2025.
 

The locomotive traction transformer market is expanding due to urbanization and the development of metro systems, as there is a greater need for electric-powered transit systems in densely populated cities. With cities growing at a faster rate, there is a need for efficient and environmentally friendly metro and light rail systems, such as electric trains, which creates the need for traction transformers to be installed.
 

Locomotive Traction Transformer Market Trends

• The demand and adoption of high-speed rail networks is rising in countries such as China, Europe, and Japan, which in is leading to the growing demand for high-performance traction transformers. Statista reported that the high-speed railroad networks increased from 58,840 kilometers in 2021 to 59,500 kilometers in 2022. These systems then need transformers that have enhanced power handling capabilities and dependability, creating demand for these transformers.
   
• There is a growing trend of integrating smart monitoring technologies into traction transformers. These technologies support the real-time data capturing of required data and predictive maintenance for enhanced operational efficiency. This innovation is helping in improving the operations and life of the devices by reducing operational downtime and improving management of railway networks.
   
• The growing trend of urbanization is driving the growth of metro and light rail networks, majorly in developing nations. The global metro rail infrastructure market was valued at USD 46.8 billion in 2023 and is set to reach USD 83.8 billion by 2032, growing at a CAGR of 6%. As these systems adopt electric propulsion to reduce congestion and their adverse environmental effects, traction transformers for powering the trains become essential, thus fostering further locomotive traction transformer market growth.
   
• With sustainability policies and more stringent emission standards, there is a growing shift towards electric-powered trains as compared to traditional diesel locomotives in response to environmental concerns. This shift is facilitated by locomotive traction transformers which aid in the development of cleaner and more energy-efficient transportation systems.
   

Locomotive Traction Transformer Market Analysis

Based on cooling type, the market is segmented into oil-cooled, air-cooled, and hybrid cooling. In 2024, the oil-cooled segment held a market share of over 45% and was valued at around USD 545 million.
 

• Oil cooling helps in managing heat effectively, generated during the operation of traction transformers. Oil successfully absorbs heat from the transformers and dissolves it effectively, which helps transformers operate at regulated temperatures.
   
• Oil cooling transformers are preferred due to higher thermal conductivity of oil relative to air, the oil is more efficient at removing heat from the most critical components. This makes them ideal for applications including oil cooled transformers in high speed trains and in freight locomotives, which have high power demands and also generate larger amount of heat.
   
• Oil cooled transformers are ideal for heavy duty rail applications, as they are more efficient at handling higher voltages and power ratings. With electric locomotives and high-speed trains requiring more power, the ability of oil to regulate temperature makes it the best option for cooling due to higher thermal loads.

Based on end use, the locomotive traction transformer market is segmented as rail operators, rail manufacturers, and aftermarket service providers. The rail operators segment dominated in 2024 with a market share of around 44%.
 

• Rail operators are major users of electric locomotives, as they directly rely on locomotive traction transformers to convert electrical energy for propulsion. As they operate and maintain entire rail, they become the largest consumers of traction transformers for running and managing their electric-powered locomotives and rail infrastructure.
   
• The rail operators also manage the large scale projects for the electrification of the railway and the implementation of electric locomotives. These projects give the rail operators a major stake in the market because they require great amounts of investment on traction transformers to power locomotives through entire networks.
   
• In January 2022, Hitachi Energy India received orders of more than USD 18.6 million to support Indian Railways’ electrification drive. These orders were placed by Chittaranjan Locomotive Works (CLW) and Diesel Loco Modernisation Works (DMW) for supplying traction transformers for passenger and freight locomotives. The orders were placed in the last quarter of 2021 and is in line with the Government’s target of 100% electrification of broad gauge routes. Traction transformers are of utmost importance for the operation of the trains as they are the main components for traction, lights, ventilation, brakes, signals, and communication systems.
   

Based on type, the locomotive traction transformer market is segmented as AC traction transformers and DC traction transformers. The AC traction transformers segment led the market in 2024
 

• Electric locomotives and high-speed trains are generally equipped with AC traction transformers because of their power handling capabilities. Most advanced and modern railway systems in Europe and Asia use AC-powered systems for passenger and freight trains, resulting in a high demand for AC traction transformers.
   
• AC traction systems are cheaper than DC systems, both in terms of initial costs and long-term upkeep. AC traction has the advantage of having a less complicated infrastructure which makes it easier to expand and reduces costs for many rail operators while also improving efficiency.
   
• AC traction transformers are suitable for long distance rail systems and high speed rail as AC power transmission is more effective over long distances. This makes AC traction transformers ideal for countries with large railway systems as it reduces energy losses and makes sure the power that is supplied to locomotives is optimal.
   

Based on rolling stock, the locomotive traction transformer market is divided into electric locomotives, metros, high-speed trains, and others. The electric locomotives segment held a major market share in this segment in 2024.
 

• Many countries are increasingly focusing on controlling carbon emissions and improving air quality. This development is encouraging rail operators to switch from diesel locomotives to electric ones. Thus, the growing demand for electric powered trains is increasing the market share for the traction transformers that operate electric locomotives.
   
• The development of new technologies in electric locomotives has resulted in the production of highly powerful and efficient systems for both passenger and freight transport services. Alongside these improvements, there have been improvements in locomotive performance standards, necessitating the application of these traction transformers for modern electric trains to keep pace with the growing requirements.
   
• In March 2025, Alstom delivered its 500th electric locomotive, the fully manufactured in India Prima T8 WAG-12B, to Indian Railways from the Madhepura, Bihar factory. This forms a part of a larger contract of USD 3.7 billion for the supply of 800 locomotives with a high load capacity of 12000HP designed for freight. The WAG-12B locomotives have the capacity to haul about 6,000 tons at 120 km/h which improves the productivity and dependability of freight transport across the country.

Europe dominates the global locomotive traction transformer market with a major share of over 35% and Germany led the market in the region and was valued at around USD 55.3 million in 2024.
 

• Germany has one of the largest and most advanced electric rail systems in Europe, and much of its railway network is already electrified. The high levels of electrification increase the need for locomotive traction transformers for the operation of electric locomotives for both passenger and freight services.
   
• Germany is one of the leaders in the world for the production of railway parts including locomotive traction transformers. The strong technological know-how and an equally strong export market strengthens Germany’s position in the global market for traction transformers.
   
• Germany has set strong targets for sustainable transport and carbon emission reduction. The country is actively replacing diesel powered trains with electric locomotives as part of its environmental policies. This shift increases the need for electric locomotives and traction transformers.
   

The growth forecast for the locomotive traction transformer market in the U.S. from 2025 to 2034 is highly encouraging.
 

• The U.S. government is investing heavily in the rail infrastructure, which includes high-speed rail construction projects and its electrification. These initiatives, especially under federal programs focused on enhancing sustainable transportation, are increasing the demand for locomotive traction transformers to service new electric rail systems.
   
• The demand for urban electric transit systems (metro and light rail) is on the rise in large metropolitan areas. In addition, there is a drive to electrify freight rail corridors to improve efficiency and decrease operating costs. These two trends create rising demand for U.S. traction transformers.
   

China is expected to show remarkable and promising development in the locomotive traction transformer market from 2025-2034.
 

• China has extensive networks such as the China Railway High-speed (CRH) system, making it the world leader in high-speed rail. China's advancement in high-speed rail systems increases the need for high-performance traction transformers due to the increased power requirements. Moreover, it increases the demand for high-performance traction transformers.
   
• China’s State Council Information Office stated that over 3,100 km of new rail was constructed in 2024, which included 2,457 km of high-speed rail connecting major cities and regions. As compared to the year 2012, the total length of China's rail network has grown by more than 65%, while high-speed rail has expanded by over four times. Expansion of the country's rail infrastructure has also gone through a major transformation.
   
• China's rail network is expanding rapidly, transforming it into the world’s largest electrified rail system. The expansion of rail and freight services greatly increases the demand for traction transformers due to the large number of electric locomotives powered by electric motors in use across the nation.
   

The locomotive traction transformer market in Mexico is expected to experience significant and promising growth from 2025 to 2034.
 

• The adoption of trade agreements such as the USMCA has boosted Mexico’s industrial growth along with the investments towards rail infrastructure. This has increased the need for both passenger and freight electric locomotives, thus increasing the demand for efficient traction transformers for these systems.
   
• The Mexican government is currently implementing rail programs to enhance the country’s economic productivity and regional integration including initiatives such as the Mayan Train development and other electrification projects. Mexican authorities also recently announced other comprehensive plans for developing rail infrastructure and aim to invest around USD 7.6 billion by 2025 to expand the railway network, including new passenger and freight routes. These initiatives facilitate electric locomotive and urban transit systems, thus creating a demand for traction transformers in Mexico.
   

Locomotive Traction Transformer Market Share

Top 7 companies leading the locomotive traction transformer industry in 2024 were ABB, Siemens, Hitachi, Alstom SA, Mitsubishi Electric, Schneider Electric, and Toshiba Corporation. Together, they held more than 35% of the market share.
 

• ABB is one of the significant players in the electrification industry and is known for its transformer technologies. The company offers locomotive traction transformers for electric locomotives, high-speed trains, and metros. ABB also offers energy-efficient solutions and innovative rail technologies, thus placing it as a major player in the industry
   
• Siemens is one of the major players in the railroad transportation and electrification industry. The Siemens Mobility division deals in traction transformers for electric locomotives, high-speed trains, and even metro systems. Siemens’s smart rail systems and advanced power solutions help them gain a substantial share of the market.
   
• With its Railway Solution division, Hitachi commands a substantial share of the locomotive traction transformers market. This is due to their growing focus, investments and innovations in new technologies. Their transformers function as the backbone of electric rail systems, serving high speed trains and urban rail transit systems.
   
• Alstom is a key player in rail transportation and electrification segment. They provide advanced models of locomotive traction transformers that are used in their electric locomotives and high speed rails. Due to their innovations towards sustainable transport solutions and rail electrification, they serve as a major competitor in the traction transformer market.
   
• Mitsubishi Electric is prominent in electrification and railway technology, supplying traction transformers for high-speed trains, subways, and electric freight rail. Their software solutions include optimally reliable systems that save energy, which is crucial for the operation of railways
   

Locomotive Traction Transformer Market Companies

Major players operating in the locomotive traction transformer industry include:

• ABB
• Abirami Enggineering Works
• Alstom SA
• BHEL
• CG Power and Industrial Solutions
• Hitachi
• Mitsubishi Electric
• Schneider Electric
• Siemens
• Toshiba
   

The market is impacted by policies and regulations set by the government regarding electrification of railways, reduction of emissions levels, and energy efficiency. Rail operators and governments are more willing to work with companies who adhere to IEC and ISO standards and support environmental initiatives which lead to intensified competition among market players.
 

The constant changes and advancements in technology and innovation make the market very competitive. To meet the changing requirements and demand for electric locomotives, high-speed trains, and urban transit systems, companies are developing sustainable, energy-efficient, and high-performance traction transformers.
 

ABB, Siemens, Schneider Electric, and Mitsubishi Electric along with Hitachi, Alstom, Toshiba have been the key players in the global locomotive traction transformer market. These companies possess a strong brand image, wide R&D resources, and strong partnerships with rail operators and government entities which helps them gain a market advantage.
 

Locomotive Traction Transformer Industry News

• Alstom won a contract worth USD 155 million for the supply of traction components along with maintenance services for 17 Vande Bharat sleeper trainsets (a total of 408 cars). These trainsets are configured for a maximum speed of 180 km/h and a cruising speed of 160 km/h. The contract also promises to provide both preventive and corrective maintenance during the five years following the warranty period, to be conducted at several railway depots within India. The contract was received by the company in January 2025.
   
• In January 2025, Hitachi Energy got an order from Siemens Mobility GmbH for the supply of 360 RESIBLOC Rail onboard traction transformers for the S-Bahn modernization project in Munich. These transformers are intended to be mounted on 90 new "XXL" S-Bahn trains, each measuring over 200 meters long and designed to hold more than 1,800 passengers.
   
• In January 2024, ABB was awarded a contract for the supply of entire traction chains for the modernization of 19 Electroputere LE 5100 locomotives owned by CFR Calatori, Romania's state rail passenger company. The contract was given to both ABB and Romanian partner contractor Reloc, who specializes in the overhaul of locomotives. The Reloc is financed by Romania's National Recovery and Resilience Plan (PNRR), which is turn is supported by the EU. Under the terms of the contract, ABB shall provide transformers, converters, electric motors and associated systems modules.
   
• In September 2022, during the InnoTrans trade fair in Berlin, Hitachi Energy launched its new oil-free traction transformer, RESIBLOC Rail. It is a dry-type transformer with an integrated cooling system and operates at voltages up to 25 kV. Its plug-and-play design helps train manufacturers with effortless installation and offers the safety and efficiency advantages provided by dry-type transformers.
   

The locomotive traction transformer market research report includes in-depth coverage of the industry with estimates & forecast in terms of revenue ($Bn) and shipments (units) and from 2021 to 2034, for the following segments:

Click here to Buy Section of this Report

Market, By Type

• AC traction transformers
• DC traction transformers

Market, By Mounting Position

• Underframe mounted
• Roof mounted
• Machine room mounted

Market, By Rolling Stock

• Electric locomotives
• Metros
• High-speed trains
• Others

Market, By End Use

• Rail operators
• Rail manufacturers
• Aftermarket service providers

Market, By Cooling

• Oil-cooled
• Air-cooled
• Hybrid cooling

The above information is provided for the following regions and countries:

• North America
  • U.S.
  • Canada
• Europe
  • UK
  • Germany
  • France
  • Italy
  • Spain
  • Russia
  • Nordics
• Asia Pacific
  • China
  • India
  • Japan
  • Australia
  • South Korea
  • Southeast Asia 
• Latin America
  • Brazil
  • Mexico
  • Argentina 
• MEA
  • UAE
  • South Africa
  • Saudi Arabia