Klaus-Michael Ahrend

ENTEGA AG provides energy and infrastructure services. Its operations are divided into the generation, distribution, networks, public service management, trading, and shared services business areas. The generation business segment includes the production of electricity from renewable sources and gas-fired plants. The supply of electricity, natural gas, district heating, and telecommunications services fall under the distribution division. The construction and operation of energy and drinking water networks, power plants, as well as street lighting systems are part of the networks business area. The supply of drinking water, sewage treatment, and waste incineration are included in the public service management division. The trading business unit involves energy trading, portfolio and balance group management, as well as direct marketing of electricity and biogas. The shared services division offers billing and metering services. The company is headquartered in Darmstadt, Germany.

citiworks AG is an energy trading and energy services company based in Darmstadt, Germany. The German company provides tailored solutions and energy services to energy suppliers, municipal utilities, power plant operators, and energy-intensive industrial companies. citiworks procures energy on the electricity and gas markets and manages and markets power plant portfolios. citiworks AG offers services such as market access, automated short-term trading, portfolio management, and balancing group management. Founded in 2000, the company specializes in energy trading, portfolio management, balancing group management, and logistics in the electricity and gas market. The company was acquired by Entega AG from Stadtwerke München GmbH on May 06, 2010, and is ultimately controlled by the City of Darmstadt.

Klinikum Darmstadt GmbH is a healthcare company based in Darmstadt, DE. Klinikum Darmstadt is ultimately controlled by the City of Darmstadt. The German company provides comprehensive medical care services with 21 clinics and institutes, as well as a medical center, available 24/7. The company's mission is to provide the best possible care to their patients. The CEOs of the company are Nawid Khaladj and Clemens Maurer.

e-netz Südhessen AG engages in the management and operation of distribution networks for electricity and gas. Its business activities include the construction and installation of network connections for private households, commercial establishments, industrial plants, and renewable energy production plants as well as the operation of metering stations. The company is headquartered in Darmstadt, Germany.