Alstom is a large French multinational conglomerate which holds interests in the power generation and transport markets. According to the company website, in the years 2010–2011 Alstom had annual sales of over €20.9 billion, and employed more than 85,000 people in 70 countries. 

Alstom is active in the field of hydroelectric power generation; in conventional islands for nuclear power plants; and in environmental control systems. It is also the manufacturer of the AGV, TGV, and Eurostar trains, as well as of Citadis trams. Alstom is also present in the urban transport market, and is behind regional train models, signalling infrastructure equipment, and a number of associated services.