GEW Köln
Corporate brand
UnclaimedGEW Köln AG is a Cologne-based holding company that today holds stakes in energy, telecommunications and metering businesses.
Last updated September 16, 2026
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Overview
GEW Köln AG (GEW) is a subsidiary of Stadtwerke Köln GmbH. For around 130 years, GEW Köln AG and its predecessor companies supplied Cologne and later parts of the Rhenish region with energy and drinking water. In 2002, GEW Köln AG and other companies formed GEW RheinEnergie AG, which was renamed RheinEnergie AG in 2004; GEW Köln AG transferred its facilities, personnel and operating business to the new company. Today it acts exclusively as a holding company, holding 75.8 percent of RheinEnergie AG, 100 percent of Cologne telecommunications provider NetCologne GmbH, and all shares in the Brunata/Metrona Group, Hürth, as well as a 20 percent stake in Stadtwerke Düsseldorf AG.
History
For around 130 years, GEW Köln AG and its predecessor companies supplied Cologne and later parts of the Rhenish region with energy and drinking water. The emerging competition in the energy market offered opportunities, and so in 2002 GEW RheinEnergie AG emerged from GEW Köln AG and other companies as a new, regionally committed company. Since 2004 the name has been RheinEnergie AG. GEW Köln AG transferred facilities, personnel and operating business to the new company. Today it acts exclusively as a holding company and holds 75.8 percent of the shares in RheinEnergie AG, 100 percent of the shares of Cologne telecommunications provider NetCologne GmbH and all shares in the Brunata/Metrona Group, Hürth. It is also a 20 percent shareholder in Stadtwerke Düsseldorf AG. GEW Köln AG (GEW) is a subsidiary of Stadtwerke Köln GmbH.
Products and positioning
Holding company
Sources1 sources
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