1894
S&H sets up a Technical Bureau in Mexico City.
1897-1898
S&H constructs the first power station in Mexico City; a public corporation, Mexican Electric Works Ltd. / Compania Mexicana de Electricidad S.A., is also founded by S&H and the Dresdner Bank.
1905
Siemens-Schuckertwerke Mexiko Elektrizitätsgesellschaft mbH Berlin is founded with a regional office in Mexico City.
1909
SSW-Mexiko becomes the representative of Protos Automobile GmbH Berlin.
1911
Regional offices are opened in Guadalajara und Monterrey.
1912
An automobile marketing company, Protos Garage S.A., is founded in Mexico City. The Rio de la Alameda power station and the Quijano y Rivero hydroelectric power plant are built.
1921
The Siemens agency is transformed into a public corporation and renamed Siemens Méxicana S.A.
1929-1930
Generators and transformers are supplied for the Rio Lerma hydroelectric power plant.
1956
The Siemens company in Mexico is re-founded.
1972
SITESA is founded for the production of telecommunications technology.
1987
The first magnetic resonance tomograph in Latin America is installed in the Hospital Central Militar in Mexico City.
1994
The Siemens activities are reorganized into a holding.
1997
PEMEX awards Siemens the largest order so far received to equip a refinery with process control technology.
2003
Siemens delivers two turnkey gas turbine power plants to the state-owned power utility Comision Federal de Electricidad (CFE)
2005
Contract for the extension of Metro Line 2 in Monterrey. After its deliveries for Line 1 (1988) and 2 (1994), Siemens remains the main supplier of electro-mechanical equipment
2007
Siemens delivers the equipment for modernizing the iron and steel works and heavy plate rolling mill for the Mexican steel producer Altos Hornos de Mexico S.A.B. de C.V. (AHMSA) in Monclova