Michael Geißler

Berliner Energieagentur GmbH provides gas services. Its three business divisions Consulting, Contracting and International Know-how transfer, develop and realize innovative projects that reduce high energy costs as well as CO2 emissions. The company was founded in 1992 and is headquartered in Berlin, Germany.

Städtisches Klinikum Karlsruhe gGmbH is a hospital operating private company based in Karlsruhe, Germany. The CEOs of the German company are Michael Geißler, Markus Heming. The company operates hospitals.

Bewag AG & Co. KG distributed electricity and provided heating services throughout Germany. With electricity customers and district heating customers, the utility controlled Berlin's power market and its heating market. It operated electricity grid and had a generating capacity primarily from combined heat and power plants. It also traded wholesale electricity and had telecommunications, water and gas utility interests. The company was headquartered in Berlin, Germany