En studie av solpanel för bostäder i tre svenska städer: Stockholm, Malmö och Umeå

This thesis examines the energy production and economic feasibility of a 5kW monocrystalline silicon solar panel system in three Swedish cities: Malmö, Stockholm, and Umeå. Sweden aims to rely entirely on renewable energy by 2040, which makes residential solar panels a practical and sustainable solution for future energy needs. However, differences in weather conditions, snow accumulation, and electricity prices across the country impact the energy output and payback period of solar panels. This creates uncertainty for homeowners, who often struggle to assess the panels' true potential and financial return, especially when faced with biased information from solar panel companies. To provide clear and unbiased insights, this study uses weather data from 2023, including solar irradiation, diffuse radiation, and temperature to calculate monthly energy production through MATLAB simulations. The calculations show potential annual energy production of 5937 kWh for Malmö, 5302 kWh for Stockholm, and 5186 kWh for Umeå. Using the production data, the study then conducts an economic analysis to estimate the payback period for each city. The findings show that Malmö has the shortest payback period at 8 years 15 days, followed by Stockholm about 11 years 4 months, while Umeå has the longest payback period at 12 years 10 months approximately.