Hållbar energiförsörjning inom Bertegruppen AB : Tekniska och marknadsmässiga förutsättningar för solcellsinvesteringar inom koncernen

Sammanfattning: This thesis was conducted to study Bertegruppens vision of being a business group self-sufficient on electrical energy. The scope was to investigate the potential of the vision being realized in a near future by adding solar energy to the existing energy production mix. Examinations of the energy need and the consumption pattern at the different companies were made by studying hourly data from the electricity supplier. Future energy need was determined during interviews and study visits, where potential areas for solar modules also were identified. Global solar radiation data was collected fromthe STRÅNG model, provided by the Swedish Meteorological and Hydrological Institute. These data were inserted to the micro power simulation tool HOMER ENERGY, along with solar module parameters from a solar energy installer Bertegruppen has initiated discussions with. The simulations resulted in potential solar energy production for a maximized and an adapted case for each company. In the adapted case, the implications from the Swedish solar energy market were considered while in the maximized case they were not. The simulation output data were then processed in the computational tool MATLAB, along with the hourly data over the electrical energy consumption at each company. At last economical calculations were carried out for the maximized and adapted case for each company, based on the Levelized Cost of Energy method. By adapting the maximized solar cell systems at each company, expand the hydropower station according to the plans, add diary-residues from Sia Glass to the biogas plant and account for the electrical energy bought from other hydropower stations in Suseån within the guarantees of origin system, Bertegruppen would produce 50.8 percent of their electrical energy need in 2021. For the adapted solarcell systems, the share would be 46.3 percent. The maximized solar cell systems resulted in a LCOE of 0.522 kr/kWh for Bertegruppen at a present value of 1 934 tkr.The LCOE for the adapted solar cell systems would be 0.529 kr/kWh at a presentvalue of 823 tkr.