This bachelor’s thesis investigates the optimization and feasibility of an off-grid energy system for residential houses. The off-grid system consists of a combination of photovoltaic (PV) modules, hydrogen storage, battery storage, and a geothermal heat pump. The system utilizes the heat losses generated from hydrogen production and redirects it to the heat pump to enhance energy efficiency. The aim is to explore how different sizes of the components PV modules, battery storage and hydrogen storage affects the self sufficiency and evaluate the economic viability compared to being on-grid with a PV system. The study entails modeling two houses with different sizes and energy demands, analyzing different scenarios for scaling PV production and adjusting storage capacities. Results indicate that increasing PV generation significantly enhances both energy self-sufficiency and cost-effectiveness. Meanwhile, changing battery and hydrogen storage gave less of a difference. However, achieving 100% self-sufficiency with the proposed off-grid system remains more expensive compared to grid-connected solutions. Future projections suggest that decreasing costs of system components could make off-grid systems more economically viable. The study concludes that integrating additional PV surfaces and optimizing energy storage are crucial for improving the sustainability and affordability of off-grid residential energy systems.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-530211 |
| Date | January 2024 |
| Creators | Blomberg, Nils, Bröms, Matilda, De Marie, Josefine, Rydin, Alma |
| Publisher | Uppsala universitet, Institutionen för samhällsbyggnad och industriell teknik |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | SAMINT-STS ; 24008 |
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