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Evaluation of hydropower equivalents in electricity capacity expansion models

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  • Öberg, Simon
  • Göransson, Lisa
  • Fälth, Hanna Ek
  • Rahmlow, Uli
  • Johnsson, Filip

Abstract

As a dispatchable and flexible carbon-free generator, reservoir hydropower provides a significant value to the electricity system. However, with an expected surge in the European electricity demand and an increasing share of variable renewable generation, the role of hydropower is expected to change. Yet, in capacity expansion models, the flexibility of hydropower tends to be overestimated due to an exceedingly simplified implementation, leading to underestimations of investments in other dispatchable technologies. This work aims to improve the representation of hydropower in such models by identifying important constraints from detailed hydropower models.

Suggested Citation

  • Öberg, Simon & Göransson, Lisa & Fälth, Hanna Ek & Rahmlow, Uli & Johnsson, Filip, 2026. "Evaluation of hydropower equivalents in electricity capacity expansion models," Renewable Energy, Elsevier, vol. 270(C).
    • Handle: RePEc:eee:renene:v:270:y:2026:i:c:s0960148126007500
    DOI: 10.1016/j.renene.2026.125924
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