Alstom

Alstom SA is a French multinational company operating primarily in rail transport. It designs, manufactures, and services trains, trams, metros, signaling, and integrated rail systems. The company is headquartered in Saint-Ouen, France, and operates in more than 60 countries, with manufacturing and research and development sites across Europe, North America, Asia-Pacific, and the Middle East.

Alstom's history spans the early 20th century through mergers and restructurings; the modern organization emerged from the consolidation of major French engineering groups focused on electrical traction and rail signaling. In 2014-2015, the energy portfolio of Alstom was acquired by General Electric, while the transport business continued under the Alstom name. In 2018-2019 Bouygues became the majority owner, and Alstom remained listed on Euronext Paris. In 2019 the planned merger with Siemens Mobility was terminated following antitrust concerns by the European Commission. In 2021 Alstom completed the acquisition of Bombardier Transportation, significantly expanding its product line and geographic reach.

Products and services: Alstom provides rolling stock (high-speed, regional and urban trains), trams and metro systems, and rail signaling and automation. It also offers maintenance, upgrading, and turnkey project services for rail networks. Notable product families include Avelia high-speed trains and Citadis trams. The company emphasizes sustainable rail solutions and decarbonization, including energy-efficient propulsion systems and lightweight materials.

Alstom is one of the world's leading rail equipment suppliers, competing with other global manufacturers such as CRRC. It is a major supplier to public transit authorities and national rail operators in Europe, North America, and beyond, and continues to pursue large-scale electrification and modernization projects.