Steag Power
We ensure a secure energy supply. Now and in the future.
Steag Power consolidates the power plant business and operates seven hard-coal-fired power plants at six sites in Germany, providing both market-based and reserve power with a total electrical output of around 3,500 MW. In this way, it makes a significant contribution to security of supply in Germany and the European UCTE grid (Union for the Co-ordination of Transmission of Electricity). Our share of total electricity generation in Germany is around five per cent.
Steag Power Markets
Steag Power consolidates the power plant business and operates seven hard-coal-fired power plants at six sites in Germany, providing both market-based and reserve power with a total electrical output of around 3,500 MW. In this way, it makes a significant contribution to security of supply in Germany and the European UCTE grid (Union for the Co-ordination of Transmission of Electricity). Our share of total electricity generation in Germany is around five per cent.
Our value creation ranges from global fuel procurement and the necessary logistics to the power plants in the Ruhr and Saarland regions. We remain committed to our strategy of phasing out hard coal-fired power generation in the long term.
Duisburg-Walsum
| Commissioned in | 2013 |
| Net capacity | 725 MW |
| Location | Duisburg-Walsum, NRW, Deutschland |
| Operation | Market-based operation |
Bergkamen
| Commissioned in | 1981 |
| Net capacity | 717 MW |
| Location | Bergkamen, NRW, Deutschland |
| Operation | Grid reserve |
Bexbach
| Commissioned in | 1983 |
| Net capacity | 726 MW |
| Location | Bexbach, Saarland, Deutschland |
| Operation | Grid reserve |
Weiher
| Commissioned in | 1976 (Block Weiher III) |
| Net capacity | 656 MW |
| Location | Quierschied, Saarland, Deutschland |
| Operation | Grid reserve |
Heizkraftwerk Herne
| Commissioned in | 1989 |
| Net capacity | 460 MW |
| Location | Herne, NRW, Deutschland |
| Operation | Grid reserve |
| District heating capacity | 550 MJ/s |
Völklingen
Modellkraftwerk Völklingen
| Commissioned in | 1982 |
| Net capacity | 179 MW |
| Location | Völklingen-Fenne, Saarland, Deutschland |
| Operation | Grid reserve |
Völklingen
Heizkraftwerk Völklingen
| Commissioned in | 1989 |
| Net capacity | 211 MW |
| Location | Völklingen-Fenne, Saarland, Deutschland |
| Operation | Grid reserve |
Thomas Ciecierski
Member of the Management Board
From January 2024 until his appointment to the Executive Board, he was Head of the Technology Division at STEAG Power GmbH. In December 2024, he also took on the role of Technical Advisor to STEAG Power GmbH and Iqony GmbH.
From January 2011 to December 2013, he was Head of the Procurement/Sales – Electricity and CO2 Department in the Front Office Division B&O at STEAG GmbH, Essen (since 1 December 2022 STEAG Power GmbH). Prior to this, he held various positions in the load dispatch division, most recently as Head of the Load Dispatch and Short-Term Electricity Trading Unit within the EW / Load Dispatch division at Evonik STEAG GmbH until 2010. Thomas Ciecierski began his career in 1989 with an apprenticeship as an energy electronics technician at the STEAG power station in Lünen. Alongside his subsequent work as an energy electronics technician at the Lünen power station, he completed a degree in electrical power engineering at Dortmund University of Applied Sciences.
Karl Resch
Member of the Executive Board
Karl Resch has been with the STEAG Group since 2013 and has held various positions in energy trading and business development during this time.
Most recently, he served as Head of Portfolio Management & Origination at STEAG Power GmbH from 2024; prior to that, he headed the Sales & Origination division at STEAG GmbH from 2017, and at STEAG Power GmbH from 2023. Karl Resch has been an authorised signatory of STEAG GmbH since 2013 and has also been an authorised signatory of STEAG Power GmbH since 2023.
Prior to joining STEAG, he had already spent around fifteen years in various roles within the energy sector, most recently as an authorised signatory and Head of Industrial Sales & Customer Relationship Management at RWE Supply & Trading in Essen, and previously at Enron Energie in Frankfurt am Main and at OMV in Vienna. His background in the energy sector, as a graduate engineer in Applied Geosciences with studies at the Montanuniversität Leoben (Austria) and the Colorado School of Mines (USA), was complemented by an Executive MBA in General Management from the University of St. Gallen (Switzerland).
Verena Sievers
Member of the Management Board
She also continues to head the HR department for the entire group, a role she has held since 2019. She continues to fulfil this role alongside her management duties at STEAG Power GmbH.
Until April 2025, Verena Sievers was also Chair of the Senior Executives’ Committee and, in this role, also assumed the mandate for senior executives on the employee side of the Supervisory Board of KSBG GmbH and STEAG GmbH. Verena Sievers looks back on a long career within the STEAG Group. From 2017 to 2019, she was Head of Back Office at Trading & Optimisation; prior to that, she was responsible for risk management in the Group’s commodity trading under various corporate structures and, in this capacity, helped to establish the trading division as it stands today.
Verena Sievers studied economics at Ruhr University. She began her professional career within the Group in 2004 at RAG Coal International AG in the International Management & Development division, before moving to the coal trading division of RAG Trading GmbH.
Following this notarised agreement for Stadtwerke Schorndorf to become a co-shareholder in Neue Wärme Schorndorf GmbH, the management team has been expanded. Going forward, Dirk Wernicke will lead NWS alongside Ralf Tabellion, Cooperation Manager at Iqony. This means that the partnership-based collaboration between the shareholders is now also reflected in the company’s operational management.
Neue Wärme Schorndorf GmbH is the joint venture between Iqony and Stadtwerke Schorndorf. The aim is to establish a district heating supply for the Rems-Murr Clinics, the Grauhalde School Centre, the Künkelin site and, in the long term, up to 1,200 households. The plan is to create a modern district heating network based on a biomass heating plant with a capacity of around 4 MW. This is intended to gradually replace numerous existing oil and gas heating systems.
Over the past few months, the project company has laid the groundwork for the scheme. This included, amongst other things, a comprehensive site analysis: experts examined six alternative sites based on technical, logistical, planning law and other project-relevant criteria.
“Careful scrutiny and transparent working practices”
“The people of Schorndorf rightly expect us to examine matters carefully and work transparently. We have done just that,” says Dr Dirk Wernicke. “With these results, we now have a solid basis for the next decisions and can continue to develop the project consistently together with our partners. Our goal remains an affordable, climate-friendly and reliable heat supply for the people of Schorndorf.”
For the project partners, the long-term affordability of the heat supply is of paramount importance. The site analysis showed that alternative locations would have required longer pipeline routes and additional infrastructure costs. From the project partners’ perspective, a biomass heating plant on the Grauhalde offers the best conditions for combining security of supply, climate protection and a cost structure that is sustainable for customers.
“The past few months have been dominated by assessment and analysis,” says Ralf Tabellion, Managing Director of Neue Wärme Schorndorf GmbH. “We have evaluated technical options, examined the site selection in detail and laid the groundwork for further decisions. We now intend to press ahead with the project and create the conditions for a reliable, more climate-friendly and affordable heat supply in Schorndorf.”
