Ralph Elster

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.

KÖLNMUSIK Betriebs- und Servicegesellschaft mbH is a private company based in Cologne, Germany. The German company offers a diverse range of cultural events, including concerts in the Kölner Philharmonie, featuring highlights from jazz, folk, and pop music. The company's cultural offerings are financially supported by its board members and sponsors. Customers can benefit from a subscription that offers price advantages and other benefits. The CEO of the company is Louwrens Langevoort.

Sparkasse KölnBonn provides banking services to private and corporate clients. Its products include online banking and payment system; current and savings accounts; credit cards; deposits and investments; loan and financing, building and home financing; securities and brokerage; retirement plan and insurances; international banking; liquidation management; as well as corporate formation and succession. The company was founded in 1826 and 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.

Koelnmesse GmbH organizes trade fairs. The private company is based in Cologne, Germany. and has subsidiaries in Brazil, Singapore, Germany and India. The German company was founded by Konrad Hermann Adenauer. The CEO is Gerald Böse.