Friedrich Carl Janssen

LANXESS Deutschland GmbH produces and sells chemicals. It operates as a subsidiary company. The company is headquartered in Cologne, Germany.

E.ON Ruhrgas AG distributes gas. It offers gas transmission and storage solutions. Through a long pipeline system, the company supplies natural gas to gas merchant companies, distributors and industrial users in Germany and seven other nations. It also has interests in gas companies in other countries. Its customers comprises of regional companies, local distribution companies, industry and power stations. The company was founded in 1926 and is headquartered in Essen, Germany.

Avacon AG operates as a regional energy service provider. Its services include energy and natural gas distribution, water supply, as well as district heating. The firm also offers technical and infrastructure services. The company was founded in 1999 and is headquartered in Helmstedt, Germany.

E.ON Hanse AG provides utility services by providing natural gas, electricity, water, and waste management services. It also offers energy supply plans and real estate development services to local governments. It was created by the merger of Schleswag (Rendsburg), Hein gas (Hamburg), and Hanse gas (Schwerin). The company is headquartered in Quickborn, Germany.

E.ON Energy Trading SE generates and distributes electricity. The company is based in Dusseldorf, Germany.

Stadtwerke Göttingen AG is an energy service provider based in Göttingen, Germany, founded in 1859. The German company is responsible for providing gas, energy, heat, and water to Göttingen and the surrounding region. The company also offers emergency services for gas leaks, water supply disruptions, and district heating interruptions. Additionally, the company assists with the renewal of heating systems. Stadtwerke Göttingen AG is ultimately controlled by the City of Göttingen.

Thüga Assekuranz Services München Versicherungsmakler GmbH is a private company based in Munich, Germany. The German company provides full vehicle, machinery, burglary and glass insurance services. The CEO of the company is Frank Köhler.

Part of HDI Haftpflichtverband der Deutschen Industrie VVaG, HDI-Gerling Sach Serviceholding AG provides life insurance. The company is based in Hannover, Germany. The CEO of the German company is Christian Hinsch.

Hoberg & Driesch GmbH manufactures steel products. It offers Steel tubes and pipes. The company was founded in 1948 and is headquartered in Dusseldorf, Germany.

Uniper Energy Storage GmbH provides gas storage services. The company is headquartered in Essen, Germany.

Part of E.ON SE, HanseWerk AG operates natural gas networks and generates electricity. The company is based in Quickborn, Germany. Matthias Boxberger has been the CEO of the German company since 2011.