Steffen Leonhardt

Wasserwerke Westfalen GmbH is a German water treatment company that provides drinking water to 1.5 million people in the southern Münsterland, middle and eastern Ruhr area, and northern Sauerland. The company prepares water from the Ruhr river in its six waterworks located between Wickede (Ruhr) and Witten. The company is based in Schwerte, Germany and was founded in 2001. The company ensures the quality and freshness of the drinking water and also focuses on environmental management and cooperation with agriculture and energy companies. Wasserwerke Westfalen is a subsidiary of the City of Dortmund. The CEOs are Bernd Heinz and Bernhard Klocke.

WMR Wasserbeschaffung und Energieerzeugung Mittlere Ruhr GmbH is a company based in Germany that engages in the supply of water. The private company was founded in 1970 and the CEO is Dirk Waider.

Stadtreinigung Dresden GmbH engages in the provision of waste disposal and recycling services. It provides waste management, cleaning, winter maintenance, workshop and laundry service to commercial, public facilities, government and housing industries. The company was founded in 1873 and is headquartered in Dresden, Germany.

Founded in 1997, Hansewasser Bremen GmbH is a subsidiary of EWE AG that provides wastewater disposal and environmental services. The company is based in Bremen, Germany.

Open Grid Europe GmbH provides natural gas transmission services. The firm's activities include design and construction of pipelines from conceptual design, project management, and engineering to implementation operation of the pipeline system. It offers services including maintenance and repair, as well as control and monitoring of the network and storage facilities; provision of capacity management services that include capacity assessment and development of new gas industry standards; marketing of the capacities and support of customers; and quantity determination, and billing services. The company was founded in 2004 and is headquartered in Essen, Germany.

Stadtwerke Kaarst GmbH supplies natural gas, green electricity, and heat. The private company is based in Kaarst, Germany. The CEOs are Markus Barczik and Stefan Meuser. The German company was founded in 2001.

ENNI Energie & Umwelt Niederrhein GmbH provides energy supply and management solutions. The firm’s focus areas encompass power generation, electricity distribution, water supply, and natural gas distribution. It engages in technology innovation and development programs, with focus on natural gas heating, thermal and solar development, and electric-powered vehicles. Its also provides clients with energy conservation consulting and technical support services. It offers its solutions to private individuals and commercial businesses. The company is headquartered in Moers, Germany.

Stadtwerke Haltern am See GmbH is a local energy partner that has been providing energy services for over 90 years. The private company is based in Haltern am See, Germany. The German company's goal is to ensure that their city has a zest for life. The CEOs are Carsten Schier, Bernhard Klocke. The company was founded in 1900.

Ruhrverband Holding GmbH provides water supply, waste treatment and tourist services. The firm's services include suppling water for drinking, industrial purposes and hydroelectric power production, secure flood water-flow, and treat sewage. The company was founded in 1913 and is headquartered in Essen, Germany.

Technische Werke Dresden GmbH operates as a holding company, which engages in the supply and distribution of electricity, water, gas, and district heating. The firm also specializes in waste disposal, street and open space cleaning, as well as public transportation. It operates outdoor and indoor swimming pools and offers services in the areas of data processing and real estate management. The company was founded on June 18, 1991 and is headquartered in Dresden, Germany.

Part of Wasser und Gas Westfalen GmbH & Co. Holding KG, SEH Stadtentwässerung Herne GmbH & Co. KG is a company based in Herne, DE. SEH Stadtentwässerung Herne GmbH & Co. KG is involved in the management of wastewater and sewage systems. The CEOs of the German company are Josef Becker, Rolf Brechlin, Senay Sereflioglu. The company manages the Ruhmbach stream, which flows through the Gysenberger Wald, a designated landscape protection area. The company also offers exemptions from drainage fees for property owners who use fresh water for garden irrigation, subject to certain conditions.

Erenja AG & Co. KG provides electricity generation services. The private company is located in Germany.

Part of Wasser und Gas Westfalen GmbH & Co. Holding KG, Wasserversorgung Herne GmbH & Co. KG is a provider of energy services, including solar, e-mobility, and heating solutions through their SMART-TEC service brand. The company is based in Herne, Germany. The German company also offers Stadtwerke Ökostrom for operating their cost-effective and climate-neutral heat pumps. The CEOs are Ulrich Koch, Rafael Rüdel. The company was founded in 2005.

Abwassergesellschaft Gelsenkirchen mbH provides sewage treatment services. The company was founded in 1996 and is headquartered in Gelsenkirchen, Germany.

Gas-Union GmbH engages in the production and supply of natural gas. The firm operates through the following segments: Sales, Trading, and Services; Networks; Storage; and Upstream. The Sales, Trading, and Services segment focuses on product procurement, sales, distribution, and risk management processes. The Networks segment refers to product transport. The Storage segment is reponsible for technical storage and services. The Upstream segment specializes in gas exploration. The company was founded in 1961 and is headquartered in Frankfurt, Germany.

GELSEN-NET Kommunikationsgesellschaft mbH provides internet, telephone, and cloud services. The private company is based in Gelsenkirchen, Germany. The CEOs are Thomas Dettenberg, Carsten Wick. The German company was founded in 1983.

Contilia GmbH provides general medical and surgical hospital services. It operates as a provider of hospitals and senior citizen facilities whose outpatient and inpatient services are supplemented by outpatient services, medical centers, prevention, early detection and rehabilitation programs. The company is headquartered in Essen, Germany.

EWE AG provides utility services such as distribution of electricity and gas. The firm supplies electricity and natural gas, water management, communication infrastructure, Internet connections, billing systems in network control, energy trading, and energy management. The company was founded in 1943 and is headquartered in Oldenburg, 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.

Stadtwerke - Altmaerkische Gas-, Wasser- Und distributes electricity, gas, and water and is ultimately controlled by the City of Stendal. The company is based in Stendal, Germany. The CEOs are Thomas Bräuer, Doe Klitzke, Thorsten Jansing. The German company was founded in 1886.

Städtische Werke Magdeburg GmbH & Co. KG is a company based in Magdeburg, DE. Städtische Werke Magdeburg GmbH & Co. KG is a subsidiary of the City of Magdeburg. The German company provides various services such as electricity, electric car charging, heating, water supply, and wastewater disposal. The company is currently offering apprenticeships. The company was founded in 1993, and Helmut Herdt has been the CEO of the company since then.

DREWAG - Stadtwerke Dresden GmbH is an energy supplier based in Dresden, DE. DREWAG - Stadtwerke Dresden is ultimately controlled by the City of Dresden. The German company focuses on customer satisfaction and encourages customers to choose them as their energy provider. The CEO of the company is Frank Brinkmann.