Overview

Alstom is a French multinational rail-transport company supplying passenger trains, locomotives, trams, signalling, rail infrastructure, digital control systems and maintenance services. Its customers include national railway companies, urban-transit operators, infrastructure managers, public authorities and governments. The company operates across both mainline and urban rail, with activities spanning high-speed, intercity, regional, suburban and automated metro transport. The business originated in 1928 as Alsthom, a combination of the electrical-engineering division of Société Alsacienne de Constructions Mécaniques and Compagnie Française Thomson-Houston. Its early activities were concentrated on electrical equipment, heavy engineering and power-generation technology. It entered railway manufacturing in 1932 through the acquisition of Constructions Électriques de France, which produced electric locomotives and related equipment. During the following decades, Alsthom expanded into marine engineering, power generation, electrical systems and transport equipment. Its railway activities became particularly prominent through the development and production of trains for France’s TGV network. The corporate name changed from Alsthom to Alstom in 1998, after the business had operated as GEC Alsthom following a 1989 combination with the power-systems activities of the British General Electric Company. Alstom subsequently went through major portfolio changes. A severe financial crisis in the early 2000s led to restructuring, asset sales and European Union-approved state support. The company divested or separated several energy, marine and industrial activities while retaining and later rebuilding important power capabilities. In 2015, most of the energy business was sold to General Electric, leaving Alstom primarily focused on rail transportation. Rail has since become the company’s central identity and operating platform. Its portfolio includes the Avelia high-speed family, Citadis trams, Metropolis metros, regional and suburban trains, locomotives, signalling and train-control systems, traffic-management software, electrification and long-term maintenance. The 2021 acquisition of Bombardier Transportation substantially enlarged Alstom’s rolling-stock range, installed base, service contracts, signalling activities and geographical reach. The combined company became one of the world’s largest dedicated rail-equipment suppliers. Alstom’s business is project-based and typically involves multiyear tenders, engineering, manufacturing, testing, commissioning and service obligations. Revenue and profitability are therefore affected by public-transit budgets, procurement schedules, inflation, supply-chain availability, industrial execution, safety requirements, foreign-exchange movements and the timing of customer acceptance. In addition to selling vehicles, Alstom seeks recurring revenue through fleet maintenance, refurbishment, spare parts, digital services and infrastructure support. Its positioning is that of an integrated rail partner capable of combining vehicles, signalling, infrastructure and lifecycle services rather than a narrowly focused train manufacturer.

History

Alstom began in 1928 as Alsthom, formed through the combination of Compagnie Française Thomson-Houston and the electrical-engineering activities of Société Alsacienne de Constructions Mécaniques. It initially operated as a heavy electrical and engineering enterprise. In 1932, the acquisition of Constructions Électriques de France brought electric-locomotive manufacturing into the business and established an enduring transport component. The company expanded during the postwar industrial period. In 1969, Compagnie Générale d’Électricité became its majority shareholder. A 1976 merger with shipbuilder Chantiers de l’Atlantique created Alsthom Atlantique and broadened the company into marine engineering. In railway manufacturing, Alsthom delivered its first TGV to SNCF in 1978. TGV technology later produced several high-speed records and became one of the most visible foundations of the company’s rail reputation. Between 1989 and 1998, the company operated as GEC Alsthom after combining with the power-systems division of the British General Electric Company. This period brought acquisitions in rail vehicles, signalling and industrial power, including Metro-Cammell, Linke-Hofmann-Busch and SASIB’s rail-signalling business. The company became publicly listed in Paris in 1998 and adopted the Alstom name. During the late 1990s and early 2000s, Alstom still had extensive energy, marine and industrial operations. It acquired and reorganised power businesses, but entered a serious financial crisis by 2003 after weak markets, heavy liabilities and costs associated with a turbine design problem. A European Union-approved rescue involved French state participation and required major disposals, including grid activities, a diesel-locomotive business, marine assets and other subsidiaries. The French state’s stake was later sold to Bouygues. Alstom continued to restructure its portfolio during the following decade. It developed wind and hydropower activities, expanded rail manufacturing internationally and acquired additional transport capabilities, including a controlling interest in Fiat Ferroviaria. In 2014, after a contested bid process involving General Electric and Siemens, Alstom agreed to sell its power and grid businesses to General Electric. The transaction was completed in 2015, leaving Alstom principally devoted to rail transport. The company then pursued growth through rail platforms, signalling, services and international projects. Its most consequential transaction was the acquisition of Bombardier Transportation, completed in 2021. This brought together complementary train families, production sites, installed fleets, service agreements and signalling operations. Alstom now presents itself as a full-spectrum rail supplier, combining rolling stock with control systems, infrastructure, digital tools and long-term maintenance. Its modern history is consequently defined by the transition from a diversified electrical-industrial group to a specialist global rail company.

2021
Bombardier Transportation acquisition completed
[2]Alstom completes acquisition of Bombardier Transportationalstom.com
Alstom completes the acquisition of Bombardier Transportation and significantly expands its global rail platform.
2015
Energy activities transferred to General Electric
[1]Alstomen.wikipedia.org
The sale of most of Alstom’s energy business leaves rail as the company’s primary focus.
2007
TGV speed record
[1]Alstomen.wikipedia.org
An Alstom-developed TGV test train reaches 574.8 kilometres per hour.
2004
EU-approved rescue
[1]Alstomen.wikipedia.org
French state participation and an EU-approved support package accompany extensive asset disposals.
2003
Financial crisis and restructuring
[1]Alstomen.wikipedia.org
Heavy liabilities and operational problems lead to a major restructuring and discussions over state support.
1998
Alstom name adopted and shares listed
[1]Alstomen.wikipedia.org
The company adopts the Alstom name and becomes publicly listed in Paris.
1989
GEC Alsthom is created
[1]Alstomen.wikipedia.org
Alsthom combines with the power-systems division of the British General Electric Company.
1978
First TGV delivered to SNCF
[1]Alstomen.wikipedia.org
Alsthom delivers its first TGV train to France’s national railway operator.
1976
Merger with Chantiers de l’Atlantique
[1]Alstomen.wikipedia.org
The combination expands the company’s activities into shipbuilding and marine engineering.
1932
Entry into railway manufacturing
[1]Alstomen.wikipedia.org
Alsthom acquires Constructions Électriques de France, adding electric locomotives and related electrical and hydraulic equipment.
1928
Alsthom is formed
[1]Alstomen.wikipedia.org
The company is created through the combination of French electrical-engineering businesses associated with Thomson-Houston and Société Alsacienne de Constructions Mécaniques.

Products and positioning

An integrated rail-transport technology and services provider for railway operators, cities, infrastructure managers and government customers.

High-speed trains
Avelia
Avelia is Alstom’s family of high-speed trains. The platform is designed for different national networks and operating requirements, with variants addressing speed, capacity, interoperability, passenger comfort and energy efficiency. It represents the company’s principal branded high-speed offering and builds on Alstom’s long experience with TGV-derived technology.
Trams and light rail
Citadis
Citadis is Alstom’s modular tram family for urban and metropolitan networks. Configurations can be adapted to street-running or reserved alignments, local accessibility requirements, passenger volumes and city-integration objectives. The platform is used as part of broader urban-mobility projects that may include infrastructure, signalling and maintenance.
Metro trains
Metropolis
Metropolis is Alstom’s metro-train platform for urban rail operators. It can be configured for different train lengths, capacities, power systems, automation levels and passenger-flow requirements. The platform is commonly delivered alongside signalling, depot, control and maintenance solutions.
Signalling and digital rail
Railway signalling and train control
Alstom supplies signalling, interlocking, train-control, traffic-management and automation systems for mainline and urban railways. These products coordinate train movements, improve network capacity and support safety and automated operation. They may be integrated with vehicles, communications networks, electrification and infrastructure projects.
Maintenance and lifecycle services
Rail services
Alstom’s services business covers preventive and corrective maintenance, fleet refurbishment, spare parts, technical support, digital monitoring and long-term availability agreements. These services support trains and railway systems after initial delivery and are intended to extend asset life and improve operational reliability.

Controversies

2021
United Nations database concerning settlement-linked activities
The United Nations included Alstom in a database of business enterprises associated with specified activities connected to Israeli settlements in the occupied West Bank. The listing prompted divestment by Norway’s KLP pension fund; inclusion in the database is not itself a criminal conviction.
Source
2019
Alstom Network UK fined over Tunisia tram-contract bribery
The UK arm of Alstom was fined £15 million for bribery connected to a tram contract in Tunisia. The article says Alstom Network UK had been convicted the previous year of conspiracy to corrupt.
Source
2014
Foreign-bribery enforcement by the United States
Alstom admitted violations of the U.S. Foreign Corrupt Practices Act and agreed to pay a $772 million criminal penalty. The case concerned alleged improper payments used to secure contracts in countries including Indonesia, Saudi Arabia, Egypt, the Bahamas and Taiwan.
Source
2014
UK corruption proceedings involving Alstom Network UK
The UK Serious Fraud Office brought proceedings concerning alleged corruption connected with transport and energy contracts in several countries. In 2018, three executives were convicted of conspiracy to corrupt in relation to the Lithuania investigation.
Source

Brand decisions

2021
Acquire Bombardier TransportationM&A
Background
Alstom sought greater scale in rolling stock, signalling, services and international rail markets after becoming a rail-focused company.
Action taken
Alstom completed the acquisition of Bombardier Transportation and integrated its assets, products, employees and customer contracts.
Aftermath
The deal expanded Alstom’s train portfolio, installed base, geographic footprint and systems capabilities, while also requiring integration and competition-related remedies.
Source
2014
Sell most energy activities to General ElectricM&A
Background
Alstom was restructuring after years of financial pressure while the French government and other stakeholders considered the strategic importance of its energy operations and the future of its rail business.
Action taken
Alstom accepted General Electric’s offer for its power and grid activities after a competing Siemens proposal and extensive French government involvement.
Aftermath
The transaction was completed in 2015 and transformed Alstom into a predominantly rail-focused company.
- Siemens — Siemens submitted an alternative proposal involving an asset exchange and cash consideration, but the General Electric transaction proceeded.
Source

Recent events

2026
Alstom appoints Martin Sion as chief executive[8]Alstom appoints Martin Sion as chief executiverailjournal.com
Leadership change
Alstom confirmed that Martin Sion would succeed Henri Poupart-Lafarge as chief executive, with the change scheduled for April 1, 2026, according to railway-industry reporting.
2021
Alstom completes acquisition of Bombardier Transportation[2]Alstom completes acquisition of Bombardier Transportationalstom.com
M&A
Alstom completed its purchase of Bombardier Transportation, expanding its rolling-stock, signalling and services portfolio.
2014
Alstom and General Electric agree energy-business transaction[1]Alstomen.wikipedia.org
M&A · Regulation
Alstom agreed to sell most of its energy activities to General Electric after a politically contested process that also involved a Siemens alternative proposal and French state intervention.
2007
TGV reaches 574.8 kilometres per hour in test[1]Alstomen.wikipedia.org
Other · Product generation
A TGV test train using Alstom technology established a rail-vehicle speed record during a dedicated test run.