Steag Iqony Group
We combine security of supply and shaping the energy transition under one roof.
Visit us at E-world 2026 in Essen and find out more.
Steag Iqony Group
The Steag Iqony Group combines the best of all energy worlds.
The Steag name stands for tradition, expertise and know-how in the energy industry – since 1937. With our plants, we ensure security of supply and, in doing so, we not only develop ourselves, but also the energy industry as a whole. As Iqony, we implement projects related to hydrogen, battery storage, new, hydrogen-capable power plants, heating networks and decarbonization solutions for industry and municipal partners. Around 5,500 employees worldwide are dedicated to these goals. Together, we are enabling the energy transition in Germany and Europe.
Iqony GmbH is our new, independently operating company. Here, the areas of photovoltaics and wind energy, hydrogen activities, energy solutions for decarbonizing industry and municipalities, climate-friendly district heating supply, energy storage for electricity and heat, and activities in the area of digitalization are bundled.
As a result, Iqony can now offer the joint services in an even more targeted manner, which will additionally promote the positive development of these business areas in the coming years. With 85 years of experience in the planning, construction and operation of energy technology plants, the company offers holistic solutions for the decarbonization, decentralization and digitalization of the energy supply. Iqony focuses on renewable energies and bridging technologies that can also be used in a climate-neutral manner in the future. In addition to solar, wind and geothermal energy, the portfolio also includes hydrogen solutions, storage technologies, engineering services and gas-fired power plants. The company implements projects worldwide for major industrial companies, utilities, cities and municipalities. Specializing in tailor-made solutions for demanding challenges, Iqony leverages its broad energy industry knowledge across all technologies and services offered.
STEAG Power GmbH bundles the power plant business and thus makes a major contribution to security of supply in Germany. Our share of total electricity generation in Germany is around five percent. We are sticking to our strategy of phasing out hard coal-fired power generation in the long term.
For over 85 years, Steag has stood for efficient and safe power generation. STEAG Power GmbH operates hard-coal-fired power plants at six locations in Germany. Their share of total electricity generation in Germany is around five percent. With its hard coal-fired power plants, it also makes an important contribution to the success of the energy transition. For the foreseeable future, controllable energies will still be needed to ensure that Germany, as an industrial nation, succeeds in its transformation to a largely emission-free, but at least in the coming years still volatile, energy generation. Steag Power also operates large power plants in Turkey and Colombia. Steag is sticking to its strategy of phasing out hard coal-fired power generation in the long term.
Latest news from the Steag Iqony Group
In future, Trimet will feed around 31,000 megawatt hours of unavoidable waste heat from the process heat of its electrolysis furnaces into the district heating network of Iqony, which supplies customers in Bottrop, Essen, and Gelsenkirchen. This amount covers the calculated demand of more than 5,500 households.
“With this project, Trimet and Iqony are demonstrating what a functioning circular economy looks like in an industrialized nation. Instead of allowing industrial waste heat to go unused, it is being recycled in heating networks,” says Matthias Ohl, Spokesperson for the Management of Iqony Fernwärme. “Waste heat is an important component in the decarbonization of heat supply. Our customers in the Ruhr region are already benefiting from district heating that relies on almost 70 percent climate‑neutral sources – thanks in particular to the use of waste heat. The heating cooperation with Trimet makes our district heating even more future-proof.”
“The fact that we are now heating thousands of homes with waste heat from our plants is a milestone for our company and for the region,” says Dr. Andreas Lützerath, Member of the Executive Board of TrimetAluminium SE. “This clearly shows how innovations are driving forward the green transformation. By making aluminum production more flexible, we are moving closer to our climate protection goals, strengthening the future viability of our production sites, and, together with Iqony, making an important contribution to security of supply.”
Millions invested in climate-friendly heating
The use of industrial waste heat is possible because Trimet has converted its aluminum production to flexible adaptation to the fluctuating power supply from wind and solar plants. Heat exchangers installed specifically for this purpose on the electrolysis furnaces capture the heat from the production process. Four fan stations direct it through a pipe bundle containing water, which is heated to around 130 degrees Celsius. Under high pressure, the water travels through a pipe system to the energy center, where it transfers its heat to the water in the district heating network. To this end, Trimet has installed a 1.6-kilometer-long pipe system on the factory premises, in which 36 cubic meters of water circulate. Iqony has laid a 700-meter-long pipe connection linking the energy center to the connection point outside the factory premises.
In 2023, Trimet and Iqony agreed on a 20-year cooperation agreement on the use of waste heat from aluminum production at the Trimet site in Essen. Work on setting up the infrastructure for converting the production facilities has now been successfully completed. Once trial operation has been completed, the plant will promptly transition to regular operation.
Both companies have invested a high single-digit million euro amount in the project.
