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Pumped Storage Hydroelectricity for a Sustainable Electricity Transition - With a Case Study of Juktan Power Station
  • Teodor Elmfeldt,
  • Lina Bertling Tjernberg,
  • Christina Carlsund Levin
Teodor Elmfeldt
Electrical Engineering, KTH Royal Institute of Technology Stockholm

Corresponding Author:[email protected]

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Lina Bertling Tjernberg
Electrical Engineering, KTH Royal Institute of Technology Stockholm

Corresponding Author:[email protected]

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Christina Carlsund Levin
Mathematics KTH Royal Institute of Technology Stockholm

Abstract

This paper explores the application of Pumped-Storage Hydroelectricity (PSH) within an electricity market characterised by a substantial share of renewable and intermittent electricity production. The purpose of PSH is to enhance the alignment of supply with demand by storing energy at electricity surplus and releasing it during shortage. The Juktan Power Station, once the PSH facility in Sweden with a storage capacity of about 25 GWh and maximum generation of 335 MW, serves as a case study. An in-depth analysis of the properties of the Swedish electricity market and its influencing factors is conducted. Wind speed data is successfully used to increase accuracy of electricity price prediction. Furthermore, a model is developed to calculate potential profitability employing various operation methods. In conclusion, large-scale PSH provide significant benefit to the robustness of the electricity system with a clear increase in value beginning in 2021. However, concerns about grid tariff design, electricity market development and energy storage incentives means that investments are not obviously profitable.
16 Jan 2024Submitted to TechRxiv
26 Jan 2024Published in TechRxiv