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Süwag Energie AG distributes electricity, natural gas and heat. It offers these products and its related services to both private and corporate clients. The company was founded in 2001 and is headquartered in Frankfurt, Germany.

Essent NV engages in the supply of electricity, gas, and heat to consumers and corporations. It offers electricity generated through biomass, wind energy, combined heat and power plants. The company was founded in 1999 and is headquartered in ’s-Hertogenbosch, the Netherlands.

KELAG-Kärntner Elektrizitäts AG engages in the production, procurement, distribution, and sale of energy. It also focuses on hydro-power generation, wind energy, district heating, bio-mass energy, as well as recycling of industrial waste heat. The company was founded on January 28, 1923 and is headquartered in Klagenfurt, Austria.

Stadtwerke Köln GmbH engages in the supply and distribution of electricity, natural gas, water, and district heating. It also provides river port, transportation, and public transport systems services. The company was founded in 1960 and is headquartered in Cologne, Germany.

Westenergie Aqua GmbH operates as a holding company engaged in providing water management services. Their services encompass water supply, water sanitation, design and operation works, pipe networks and sewage treatments. The company is headquartered in Berlin, Germany.

RWE Power AG engages in the production, generation, and distribution of electricity. It operates coal, nuclear, hydroelectric, and other conventional power plants. The firm also specializes in the extraction of energy raw materials. The company is headquartered in Essen, Germany.

VSE AG provides electricity, gas, telecommunications and facility management services. It services include energy-related, commercial and metering. The company was founded in 1998 and is headquartered in Saarbrücken, Germany.

Part of E.ON SE, rhenag Rheinische Energie AG is a German company that provides energy solutions with almost 150 years of experience in the field. The company is based in Cologne, Germany. rhenag offers an interactive chart to explain the different items on their customers' annual bills, ensuring clarity and understanding. The company's expertise in energy and long-standing tradition in the industry make them a reliable choice for forward-thinking energy solutions.

Zephyr Investments Ltd. operates and invests wind energy sites. The company was founded by Thomas Corcoran Barry on March 26, 2003 and is headquartered in Wimbledon, the United Kingdom.

RheinEnergie AG engages in the production, trading, network operation, as well as distribution of energy and water. Its products include electricity, natural gas, water, district and local heating, as well as steam. The firm also provides energy-related services. The company was founded in 1863 and is headquartered in Cologne, Germany.

Uniper Kraftwerke GmbH operates coal, gas, and oil-fired power stations. It also runs hydroelectric power plants. The company is headquartered in Dusseldorf, Germany.

Part of RWE AG, RWE Supply & Trading CZ as is a company that supplies and trades natural gas. RWE Supply & Trading CZ as is based in Prague, Czechia. The Czech company was founded in 2001. Robert Kronenberg has been the CEO of the company since 2022.

Pearl Petroleum Co., Ltd. engages in the exploration, development, production, ownership, transportation, processing, distribution, marketing and sale of natural gas and petroleum related products. The company operates its projects in the Kurdistan region of Iraq. Pearl Petroleum was founded in January 2009 and is headquartered in Sharjah, the Untied Arab Emirates.

innogy Netze Deutschland GmbH engages in the production and distribution of electricity, natural gas, district heating, and water. It also constructs, operates, acquires, and utilizes network facilities, as well as transport, storage, and distribution systems for its products. In addition, the firm also provides associated services. The company is headquartered in Essen, Germany.

Part of moderne stadt Gesellschaft zur Förderung des Städtebaues, modernes köln Gesellschaft für Stadtentwicklung mbH is a German company that focuses on urban development. The company is based in Cologne, Germany. The CEOs of the company are Thomas Scheitza, Andreas Röhrig.

Part of RWE AG, RWE Pensionsfonds AG provides pension fund services. The company is based in Essen, Germany. The CEO of the German company is Katja van Doren.

Part of RWE AG, RWE Supply & Trading GmbH is a German company that produces clean, secure, and affordable electricity while pursuing a clear goal of reducing CO2 emissions. The company is based in Essen, Germany. The company is also advancing storage and energy technologies globally.

Part of TÜV Rheinland Berlin Brandenburg Pfalz eV, TÜV Rheinland Kraftfahrt GmbH is a vehicle testing centre. The company is based in Cologne, Germany. The German company was founded in 1995. The CEO is Michael Fübi.

Commerz Real AG engages in the provision of asset and investment management services. Its products and services include open-ended real estate funds, institutional investments, infrastructure funds, alternative investment funds, asset structuring, and equipment leasing. The company was founded in 1972 and is headquartered in Wiesbaden, Germany.

Part of E.ON SE, E.ON Kundsupport Sverige AB engages in the operation of a call center. The company is based in Malmö, Sweden. Leonhard Birnbaum has been the CEO of the Swedish company since 2021.

Wohnungsgesellschaft der Stadtwerke Köln mbH is a private company based in Cologne, Germany. The CEOs of the German company are Dirk Kolkmann, Dieter Steinkamp. The company engages in rental and leasing of residential buildings and apartments.

Part of RWE AG, RWE Generation SE is a German company responsible for electricity generation from various sources such as gas, hard coal, hydropower, and biomass. The company is based in Essen, Germany. The company has a flexible and efficient power plant fleet and has become a driver of the energy transition by converting power plants and developing storage technologies. Roger Miesen has been the CEO of the company since 1982.

Triton Knoll Offshore Wind Farm Ltd. operates as a wind energy farm. The company is headquartered in Swindon, the United Kingdom.

Part of RWE AG, RWEST Middle East Holdings BV is an investment holding Dutch company. The company is based in Geertruidenberg, Netherlands.

Part of RWE AG, RWE Renewables Sweden AB is a Swedish company that owns and operates wind generation facilities. The private company is based in Malmö, Sweden. The CEO of the company is Markus Krebber.

Part of RWE AG, RWE Clean Energy LLC is a full-service provider of operations, maintenance, and asset management services in the American market. Based in Austin, TX, Mark A. Noyes has been the CEO of the company since 2023. The company is committed to building long-term partnerships.

Ensys AG provides electricity generation and distribution services. It specializes in the energy management industry, with focus on energy supply, gas metering, and distribution network management. The provides industrial and commercial customers with business-to-business consulting, planning, security, and process optimization services. The company was founded in 1998 and is headquartered in Frankfurt, Germany.

Bauverein Gelsenkirchen eG is a private company that rents and leases residential properties, buildings, and apartments. The company was founded in 1902 and is based in Gelsenkirchen, Germany.

Amprion GmbH engages in operation of a transmission system in Germany and Europe. It distributes and generates electricity. The firm also provides information technology (IT) outsourcing services. The company was founded in 2003 and is headquartered in Dortmund, Germany.

Jaeger Grund GmbH & Co. KG engages in the rental and leasing of commercial land and non-residential buildings. The private company is based in Dortmund, Germany. The CEOs of the German company are Hans Jaeger, Johann Jaeger.