Our history in Bulgaria

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