On June 22, 2026, an expert workshop on the Emscher revitalization took place at the Hörder Burg conference center in Dortmund as part of the DFG-funded research project TEMPUS – Temporality and Strategic Planning. Under the title “Emscher Conversion as a Strategic Transformation Process,” seventeen experts from practice and academia (including members of the research team) discussed the project group’s preliminary findings on phases, strategic shifts, and their temporal sequencing. Central to the discussion was the question of which strategic changes define the Emscher revitalization and what explains the timing of these changes.
The venue, Hörder Burg, is located in immediate proximity to the Phoenixsee, a lake created on the former site of a steelworks in the 2000s. Today, the Phoenixsee itself is widely interpreted as a symbol of structural change and subsequent socio-ecological transformation in the Ruhr region. In this spatially and symbolically resonant context, the project group presented its interim results over a four-hour session and engaged in a dialogue with the expert audience on key dynamics of regional strategic planning.

The TEMPUS project examines the Emscher revitalization as a process of regional strategy formation from the early 1980s to the present. Its aim is to further develop an existing process model of regional strategy formation with particular attention to time and temporality. The analysis is based on over 300 documents, expert interviews, and a foundational event analysis identifying approximately 450 strategically relevant events. From this, the project group derived a preliminary process structure comprising nine strategic shifts, which were presented at the workshop and jointly reflected upon in thematic table discussions and a plenary session.
The discussion made clear that the Emscher revitalization cannot be understood solely as a technical infrastructure project. While the reconfiguration of the Emscher’s wastewater system forms its material core, the process is in fact a multifaceted regional transformation involving the interweaving of technical infrastructure, ecological renewal, urban development, political steering, institutional continuity, and communicative framing. This multidimensionality is central to the further analysis of strategy.
A recurring theme in the discussion was the importance of historical context. Participants emphasized that the Emscher revitalization would be difficult to explain without the backdrop of structural change, deindustrialization, shifting environmental perceptions, and political will at the state level. Strategic shifts thus emerged from political and planning decisions in interaction with social and economic developments.
The momentum at that time was shaped by a constellation of key political actors. Individuals such as Johannes Rau, Christoph Zöpel, Karl Ganser, and Jochen Stemplewski were named as pivotal figures. Nevertheless, the participants cautioned against an overly person-centered narrative: powerful actors are effective primarily when political, social, and institutional conditions enable their actions. Institutional stability of the Emschergenossenschaft was highlighted as a central success factor. Its corporatist structure, long-term capacity for action, and fee-based financing model enabled continuity across political election cycles. The trust of municipalities, the state, and members in its technical and organizational competence was described as a crucial resource.
The timing of strategic changes was intensively discussed. Participants emphasized that strategic shifts are rarely triggered by single decisions. Rather, over extended periods, pressure from problems, political readiness to act, technical preparation, and institutional capacity accumulate. Only when these factors converge can strategic changes become visible and effective.

Another key focus was on narratives and communication. The positive future vision of a “blue Emscher” was described as a mobilizing narrative that fostered acceptance and made the transformation comprehensible beyond technical expert circles. Participants stressed that communicative and substantive strategic shifts cannot be separated. The handling of cost increases and schedule delays was also interpreted as a strategic achievement, as it succeeded in maintaining trust in the overall process.
At the same time, the workshop identified several open questions for scientific analysis. A fundamental issue is whether the Emscher revitalization should be understood as an overarching master strategy with continuous adjustments or as a sequence of distinct, independent strategic shifts. This distinction has significant analytical implications, as it determines how complex relationships between change, continuity, and concretization can be made visible.
Additionally, potential blind spots were identified: questions concerning economic viability, health impacts, organizational development within the Emschergenossenschaft, the role of the Emscher Landscape Park, the relocation of the Emscher’s mouth, and gender perspectives. A more critical reflection on the success narrative was also called for, in order to better account for conflicts, responsibilities, and underrepresented actor groups.
For the TEMPUS project, the workshop generated numerous impulses for further progress. The context of the Ruhr region should be given greater analytical attention, the identified strategic shifts should be conceptually deepened and better ordered, and their relationship to the overarching master strategy should be more precisely defined.
Overall, the workshop demonstrated that the Emscher revitalization, as a case of regional strategy formation, holds significant potential for scientific insight and practical knowledge transfer. The discussion confirmed the relevance of the TEMPUS analysis to date and underscored that strategic shifts can only be adequately understood through their interplay with time, context, institutions, actors, and narratives.
Participants from practice included: Prof. Dr. Uli Paetzel (Chairman of the Executive Board, Emschergenossenschaft [EG]), Dr. Emanuel Grün (Former Technical Director, EG, and Chairman of the Supervisory Board, Allmende Emscher-Lippe eG), Susanne Linnebach (Head of Member and Sponsorship Management, EG), Michael von der Mühlen (Former State Secretary and Former City Director), Ullrich Sierau (Former Lord Mayor of Dortmund), Stefan Thabe (Deputy Mayor of the City of Herne), and Tana Petzinger (Head of Department for Regional Development, Regional Association Ruhr).
Participants from academia included: Prof. Dr. Rainer Danielzyk (Leibniz University Hannover), Prof. Dr. Heike Köckler (University of Applied Sciences Bochum), Dr. Michael Farrenkopf (Director, montan.dok, German Mining Museum Bochum), Prof. Dr. Deike Peters (Soka University of America), and Prof. Dr. Stefan Siedentop and Prof. Dr. Aude Zingraff-Hame (both TU Dortmund).
Cite as:
Schinagl, M., Schroeder, B., Hutter, G.& Wiechmann, T. (2026). Understanding Strategic Change: Insights from the TEMPUS Expert Workshop on the Emscher Conversion (22.06.2026 in Dortmund/Hörde). Zenodo. https://doi.org/10.5281/zenodo.21414433