Ullrich Sierau

Dortmunder Stadtwerke AG provides urban development and transportation services for the city of Dortmund. The firm, through its subsidiaries, also provides energy and telecommunication services. The company was founded on June 18, 1857 and is headquartered in Dortmund, Germany.

Sparkasse Dortmund provides commercial banking services. The bank offers telephone and online banking, brokerage, personal and home loans, real estate lending, and depositary services. It provides services through a chain of 130 branches. Sparkasse Dortmund was founded on January 14, 1841 and is headquartered in Dortmund, Germany.

State of North Rhine-Westphalia (Germany) is a regional level government authority. The state is located in Germany.

KEB Holding AG is a German company that provides securities brokerage services. It is based in Muenster, Germany and ultimately controlled by the City of Dortmund. The private company was founded in 2002.

EMSCHERGENOSSENSCHAFT provides water treatment and management support services. The firm specializes in the development and operations of wastewater treatment plants, pump stations, waterways, and closed sewer systems. Its focus areas encompass wastewater purification, proper drainage, floodwater protection, and waterway management. It operates as a water management association through funding by its members, cities, businesses, and the mining industry. The association was founded on December 14, 1899 and is headquartered in Essen, Germany.

Dortmunder Energie- und Wasserversorgung GmbH provides energy services including electricity, gas, heat, water, and electric mobility in Dortmund, DE. The private company also has a special BVB Stromtarif for Borussia Dortmund fans. The German company offers attractive deals for its customers, including discounts, tickets for exclusive events, and more. The CEOs are Heike Heim and Matthias Klein-Lassek. The company was founded in 1995 and is ultimately controlled by the City of Dortmund.