The aim of this final work is to find the most cost-effective variant of supplying the household with electricity at a certain location on the island of Krk, using solar energy. Auxiliary tools will be used in plant analysis such as Photovoltaic Geographic Information System and RETscreen. Multiple variants of electricity generation will be analyzed. The basic variant of household electricity supply is a stand-alone solar power plant. According to daily energy consumption, we determine the power of a solar power plant, which is 6.5 kW. Using the Photovoltaic Geographic Information System tool, a graph of monthly energy production is obtained with the previously defined power of the solar power plant. Throughout the year, the power plant meets the necessary electricity production. A hybrid combination of a solar power plant and a diesel engine can also be used to produce electricity. The power of the solar power plant is decreasing, and thus the initial investment costs are decreasing. Because the power of the solar power plant is reduced, it no longer meets the required monthly electricity production, therefore the diesel engine compensates for energy production. The last hybrid combination to be analyzed is a combination of a solar power plant and a wind turbine. Also as in the previous case, the power of the solar power plant is reduced, and the compensation of electricity production is done by wind turbine. Such a combination corresponds to the specified location because in the months in which the lowest energy production is the highest wind speeds.