Efforts worldwide are focused on combating climate change by reducing greenhouse gas emissions through a transition to sustainable energy, driven by specific goals to be achieved by 2030. One challenge in weather-dependent electricity production is balancing demand with supply, which is where Pumped Hydro Energy Storage (PHES) plays a crucial role. PHES systems are based on traditional hydroelectric technology and involve pumping water back to upper reservoirs using large pumps. In Sweden, there are three PHES facilities in the SE3 pricing area, Letten, Kymmen, and Eggsjön. The design of a PHES system requires careful selection of appropriate turbines. The Francis turbine is a common type of turbine and is widely used in hydropower globally. Availability of unused mine system creates the potential for expanding PHES in Sweden to enhance renewable energy integration. A profitability study examined various scenarios by varying pump parameters revealing profitable options. According to this study, Francis turbines and a separate pump system with specific flow rates 2 to 7 cubic meters per second, turned out to be most profitable for this specific project in Norberg. One of the top scenarios identified in the study showed profitability over expected lifespans, although the most optimistic projections are based on several assumptions. The research highlights the importance of PHES in addressing the challenges of renewable energy integration and balancing electricity supply and demand. The findings suggest significant potential for PHES expansion in Sweden, although the impact on electricity production will likely evolve gradually. The study finally concludes the specific design and optimization of the PHES system in Norberg, for maximizing renewable electricity production and economic viability.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:mdh-67980 |
| Date | January 2024 |
| Creators | Jerlerud, Sebastian, Tuvin, Carl |
| Publisher | Mälardalens universitet, Framtidens energi |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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