Förvaltning av batterilager och solceller i kommersiella byggnader : En fallstudie om lönsamhet av batterilager i kombination med solceller i en kommersiell byggnad i Karlskrona

Sammanfattning

The use of solar panels and battery storage systems is increasing as part of the transition from fossil fuels to renewable energy sources. Battery storage is still relatively underutilized despite its potential for both the power grid and property owners. This thesis investigates the implementation and economic potential of solar panels and battery storage in a commercial building in Karlskrona, Sweden. A case study is conducted with three scenarios: no technological systems, only solar panels and a combination of battery storage and solar panels. The analysis includes calculations of net present value and the payback-method. The results from the calculations of the case study are used in a sensitivity analysis that examines different revenue scenarios to simulate real outcomes based on varying conditions. The study also examines relevant regulations, insurance requirements and technical considerations for implementation. The results show that solar panels reduce electricity costs mainly during the summer and generate revenue from excess electricity sold to the grid. Battery storage is implemented theoretically and offers value through participation in energy markets and ancillary services. The results from the payback method and net present value shows promising results for the combination of solar panels and battery storage, with a short payback time and high net present value. Yet the implementation of the technologies is still affected by technical, legal and financial challenges. This includes high initial investment costs and safety regulations related to fire and electricity.