13. Januar 2026

Emma Minja successfully defends her dissertation on contested hydropower development in Tanzania’s Rufiji Basin Emma Minja successfully defends her dissertation on contested hydropower development in Tanzania

On December 18, 2025, Emma Athanasio Minja successfully defended her dissertation “Contested Waters: Historical Legacies of Hydropower Dams, and Future-Making in Tanzania’s Rufiji Basin (1960s–2010s)”. The dissertation was supervised by Prof. Dr. Detlef Müller-Mahn (Department of Geography, University of Bonn) and Prof. Dr. Ulrike Lindner (Department of History, University of Cologne). Congratulations! 

Emma Minja successfully defends her dissertation on contested hydropower development in Tanzania’s Rufiji Basin
Emma Minja successfully defends her dissertation on contested hydropower development in Tanzania’s Rufiji Basin © Emma Minja
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In her dissertation “Contested Waters: Historical Legacies of Hydropower Dams, and Future-Making in Tanzania’s Rufiji Basin (1960s–2010s)”, Emma Athanasio Minja examines the long and controversial history of hydropower development in Tanzania’s Rufiji Basin, with a particular focus on the Stiegler’s Gorge Dam project.

The study analyses how the dam, initially conceived during the colonial period and repeatedly revisited after independence, remained unbuilt for more than a century before its recent revival. Rather than interpreting this prolonged delay as a failure, the dissertation conceptualizes the project’s dormancy as a productive force that sustained political visions, shaped development narratives, and mediated Tanzania’s engagement with ecological concerns, foreign aid, and questions of sovereignty.

Drawing on extensive archival research in the national archives of Tanzania, Norway, and Sweden, as well as oral interviews and lived experiences with Tanzanian stakeholders, the dissertation traces how shifting political regimes, environmental debates, and financial constraints influenced the project’s trajectory over time. The findings demonstrate that large infrastructure projects can remain socially and politically active even in the absence of construction, re-emerging at critical moments of ideological or regime change.

The revival of Stiegler’s Gorge Dam—renamed the Julius Nyerere Hydropower Project (JNHPP)—illustrates how historical infrastructural visions are rearticulated within contemporary narratives of energy sovereignty and national pride.

The Department of Geography warmly congratulates Emma Athanasio Minja on her successful defense!

Energy Congress in Dar es Salaam, Tanzania,  September 2023
Energy Congress in Dar es Salaam, Tanzania, September 2023 © Emma Minja
“Failed Futures” workshop at the University of Dar es Salaam, Nyerere campus, Tanzania, March 2024
“Failed Futures” workshop at the University of Dar es Salaam, Nyerere campus, Tanzania, March 2024 © Emma Minja
Oral interviews, Kisaki village, Morogoro Rural, Tanzania, April 2024
Oral interviews, Kisaki village, Morogoro Rural, Tanzania, April 2024 © Emma Minja
Archival research in the Tanzania National Archives
Archival research in the Tanzania National Archives © Emma Minja
European Conference for African Studies (ECAS), Prague,  Czech Republic,  2025
European Conference for African Studies (ECAS), Prague, Czech Republic, 2025 © Emma Minja
ECAS, Cologne, Germany, 2023
ECAS, Cologne, Germany, 2023 © Emma Minja

Minja, E. A. (2024): Imagining Hydropower: Transnational Narratives and Realities of the Stiegler’s Gorge Project in Tanzania, 1960s–1980s. Zamani: Journal of African Historical Studies, 1(1), 52–82. https://doi.org/10.56279/zjahs1114 

Minja, E. A.& Müller-Mahn, D. (2025): Reviving a Ghost Project: The Long History of the Nyerere Dam in Tanzania. Third World Quarterly. https://doi.org/10.1080/01436597.2025.2566953 

Minja, E. A. & Chuhila M. (Forthcoming): Decolonising Tanzanian Infrastructures: The Stiegler’s Gorge Dam and the Question of Conservation. In Infrastructuring Africa, Leiden: Brill.

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