Güldane Tokyürek

Stadtwerke Köln GmbH engages in the supply and distribution of electricity, natural gas, water, and district heating. It also provides river port, transportation, and public transport systems services. The company was founded in 1960 and is headquartered in Cologne, Germany.

Kölner Verkehrs-Betriebe AG provides public transport services. The firm offers train, tram, bus, as well as cable car transportation. Its services include taxis, car sharing, and bicycle rental. The company was founded on May 20, 1877 and is headquartered in Cologne, Germany.

Gas-, Elektrizitaets- und Wasserwerke Köln AG supplies power and gas. The company is headquartered in Cologne, Germany.

RheinEnergie AG engages in the production, trading, network operation, as well as distribution of energy and water. Its products include electricity, natural gas, water, district and local heating, as well as steam. The firm also provides energy-related services. The company was founded in 1863 and is headquartered in Cologne, Germany.

Westdeutscher Rundfunk Köln operates radio and television channels. The company provides production and broadcasting of musical and entertainment programs. The firm broadcasts programs such as news, sports, documentaries, dramas, soap operas and films. Westdeutscher Rundfunk Köln was founded on April 30, 1950 and is headquartered in Cologne, Germany.

Flughafen Köln/Bonn GmbH operates as commercial airport. It offers passengers transport and freight services. The company was founded on December 8, 1950 and is headquartered in Cologne, Germany.

GEW Köln AG is a subsidiary of Stadtwerke Köln GmbH and is based in Cologne, Germany. The German company is primarily involved in providing energy services. According to their company description, GEW Köln AG is a subsidiary of Stadtwerke Köln GmbH, which is ultimately controlled by the City of Cologne. Dieter Steinkamp has been the CEO of the company since 2007.

moderne stadt Gesellschaft zur Förderung des Städtebaues engages in the implementation of urban development projects. It also specializes in the construction of residential and office buildings. The company was founded in 1968 and is headquartered in Cologne, Germany.

Stadtentwässerungsbetriebe Köln, AöR engages in the provision of water-related services. It specializes in the areas of wastewater disposal, flood protection and prevention, as well as in the care of streams and ponds. The company is headquartered in Cologne, Germany.

Häfen und Güterverkehr Köln AG engages in the provision of transport and logistics services. It manages and operates ports, railroads, and locomotive and freight car workshops. The firm also provides services, which include maintenance and repair of locomotives and freight cars. The company was founded in 1992 and is headquartered in Cologne, Germany.