Transforming Classical Hydropower Generation for Flexibility in the Global Energy Transition: Challenges, Requirements, and Prospects

This review article covers the multidisciplinary challenges shaping hydropower development within a broader energy transition. Classical hydropower generation facilities are moving toward flexible operations to adapt to and facilitate the integration of variable renewable energy sources (VRES). This...

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Main Authors: Yannick Cyiza Karekezi, Frederic Maurer, Dany Josue Tome Robles, Thomas Oyvang, Jonas Kristiansen Noland
Format: Article
Language:English
Published: IEEE 2025-01-01
Series:IEEE Access
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Online Access:https://ieeexplore.ieee.org/document/10975800/
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author Yannick Cyiza Karekezi
Frederic Maurer
Dany Josue Tome Robles
Thomas Oyvang
Jonas Kristiansen Noland
author_facet Yannick Cyiza Karekezi
Frederic Maurer
Dany Josue Tome Robles
Thomas Oyvang
Jonas Kristiansen Noland
author_sort Yannick Cyiza Karekezi
collection DOAJ
description This review article covers the multidisciplinary challenges shaping hydropower development within a broader energy transition. Classical hydropower generation facilities are moving toward flexible operations to adapt to and facilitate the integration of variable renewable energy sources (VRES). This review article explores the paradigm shift in terms of machine design considerations, power plant operation, and grid regulator implications. Machine designers, consider magnetic saturation, energy efficiency estimation, and mechanical wear and tear. This could involve, high flux densities in certain core regions, lower weighted average efficiencies, and higher machine failures owing to insulation degradation. Moreover, power plant operators must consider the effects of the flexible power production caused by VRES. In some cases, hydropower ramping ranges from 1 to 5 megawatts (MW) per second for large hydropower plants, which pose technical challenges for operators. Moreover, transmission system operators must strengthen reactive power mandates and system-bearing ancillary service markets to ensure grid stability. In certain regions, there could be longer periods with a significant reduction in physical inertia and short-circuit grid strength owing to the lower share of classical non-inverter-based generation facilities in VRES-rich power systems.
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spelling doaj-art-dc7161d4fefe4de8b4c19504e5761e182025-08-20T02:14:54ZengIEEEIEEE Access2169-35362025-01-0113747627478010.1109/ACCESS.2025.356412310975800Transforming Classical Hydropower Generation for Flexibility in the Global Energy Transition: Challenges, Requirements, and ProspectsYannick Cyiza Karekezi0Frederic Maurer1https://orcid.org/0000-0002-0363-5218Dany Josue Tome Robles2Thomas Oyvang3https://orcid.org/0000-0003-2970-7598Jonas Kristiansen Noland4https://orcid.org/0000-0002-3656-1032ABB AS, Oslo, NorwayDepartment of Electrical Engineering, Information Technology and Cybernetics, University of South-Eastern Norway (USN), Porsgrunn, NorwayDepartment of Electrical Engineering, Information Technology and Cybernetics, University of South-Eastern Norway (USN), Porsgrunn, NorwayDepartment of Electrical Engineering, Information Technology and Cybernetics, University of South-Eastern Norway (USN), Porsgrunn, NorwayDepartment of Electric Energy (IEL), Norwegian University of Science and Technology (NTNU), Trondheim, NorwayThis review article covers the multidisciplinary challenges shaping hydropower development within a broader energy transition. Classical hydropower generation facilities are moving toward flexible operations to adapt to and facilitate the integration of variable renewable energy sources (VRES). This review article explores the paradigm shift in terms of machine design considerations, power plant operation, and grid regulator implications. Machine designers, consider magnetic saturation, energy efficiency estimation, and mechanical wear and tear. This could involve, high flux densities in certain core regions, lower weighted average efficiencies, and higher machine failures owing to insulation degradation. Moreover, power plant operators must consider the effects of the flexible power production caused by VRES. In some cases, hydropower ramping ranges from 1 to 5 megawatts (MW) per second for large hydropower plants, which pose technical challenges for operators. Moreover, transmission system operators must strengthen reactive power mandates and system-bearing ancillary service markets to ensure grid stability. In certain regions, there could be longer periods with a significant reduction in physical inertia and short-circuit grid strength owing to the lower share of classical non-inverter-based generation facilities in VRES-rich power systems.https://ieeexplore.ieee.org/document/10975800/Super-flexible hydro generatorsmachine designmechanical stressoperational challengesmagnetic saturationthermal management
spellingShingle Yannick Cyiza Karekezi
Frederic Maurer
Dany Josue Tome Robles
Thomas Oyvang
Jonas Kristiansen Noland
Transforming Classical Hydropower Generation for Flexibility in the Global Energy Transition: Challenges, Requirements, and Prospects
IEEE Access
Super-flexible hydro generators
machine design
mechanical stress
operational challenges
magnetic saturation
thermal management
title Transforming Classical Hydropower Generation for Flexibility in the Global Energy Transition: Challenges, Requirements, and Prospects
title_full Transforming Classical Hydropower Generation for Flexibility in the Global Energy Transition: Challenges, Requirements, and Prospects
title_fullStr Transforming Classical Hydropower Generation for Flexibility in the Global Energy Transition: Challenges, Requirements, and Prospects
title_full_unstemmed Transforming Classical Hydropower Generation for Flexibility in the Global Energy Transition: Challenges, Requirements, and Prospects
title_short Transforming Classical Hydropower Generation for Flexibility in the Global Energy Transition: Challenges, Requirements, and Prospects
title_sort transforming classical hydropower generation for flexibility in the global energy transition challenges requirements and prospects
topic Super-flexible hydro generators
machine design
mechanical stress
operational challenges
magnetic saturation
thermal management
url https://ieeexplore.ieee.org/document/10975800/
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AT danyjosuetomerobles transformingclassicalhydropowergenerationforflexibilityintheglobalenergytransitionchallengesrequirementsandprospects
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