Milestones of business development
1854
First Siemens activities in today’s Bulgaria: The British Company Newall & Co. constructs a telegraph line from Varna to Balaclava near Sevastopol for which Siemens & Halske (S&H) delivers the telegraph devices
1903
S&H erects a telephone exchange for 1,000 subscribers in Sofia, Bulgaria
1904–1907
Österreichische Siemens Schuckert Werke (ÖSSW) sets up a lighting system for the Royal Military Academy in Sofia
1904–1908 and 1926–1929
ÖSSW sets up a power plant, lighting system and power transmission for the State Mine at Pernik
1906
Siemens-Schuckertwerke (SSW) installs a stage lighting system for the Royal Bulgarian Theatre in Sofia
before 1914
Founding of Siemens-Schuckertwerke, Abteilung für Bulgarien in Sofia as a branch office of ÖSSW
1923
Founding of Bulgarische Elektrizitäts Aktiengesellschaft (BEAG), Siemens as a subsidiary of ÖSSW, headquartered in Sofia
1938–1940
S&H erects private branch exchanges for the Royal Castle Sofia, the Wranja Castle and the castle of Princess Eudoxia of Bulgaria
1950
Dipl.-Ing. Ilia Popoff becomes S&H’s agent in Bulgaria
1951
The Siemens factories in Bulgaria are confiscated by the Soviet government
1953
S&H Wien concludes a contract of agency with V. Topaloff, Sofia
1954
V. Topaloff, Sofia, also functions as agent for the Siemens parent companies in Berlin
1964
S&H and the state-run trade company TECHNOIMPORT, Sofia, sign license contract and experience agreement for television and broadcasting technology
1969
A license and export contract is signed with ELEKTROIMPEX, Sofia. Siemens provides equipment for the expansion of the nation-wide telephone network with 300,000 line units
1970
Siemens opens an office in state-run trading company in Sofia
1971
Siemens concludes a contract of agency with RUEN, Sofia
1971
Cooperation agreement is signed between Siemens and the Bulgarian Committee for Science and Technical Progress
1974
A contract is signed with the Bulgarian company TECHNO-KOMPLEKT for the supply of communication measuring devices for the gas pipeline project USSR – Bulgaria
1974
Order for three SF6 insulated 110-kV power networks
1974
The first four ESK long-distance telephone systems start service between Bulgarian cities Sofia, Varna, Zagora und Plovdiv
1975
The Bulgarian Ministry of Foreign Trade and Siemens sign a general scientific, technical and economic cooperation agreement about telecommunications, medical and automation technology
1979
Siemens expands the Bulgarian national telephone network
1985
Siemens wins the bid from Telekom Sofia to extend seven telephone exchanges using ESK technology
1991
The Siemens office opened in 1970 is changed into a wholly-owned subsidiary
1992
Siemens is selected to be one of the main suppliers for the World Bank-financed modernization of the Bulgarian communication network. As a basis, Digicom is founded as a joint venture with the Bulgarian Incoms company
1998
Siemens EOOD is founded in Sofia as a subsidiary company
2010
Siemens wins the contract to build a combined cycle district heating power plant for EVN in Plovdiv, Bulgaria
2013
Siemens upgrades the country’s largest water treatment plant, Bistritsa, which delivers drinking water for approximately 1.5 million citizens in Sofia, through fully automated monitoring and control