Wind and solar irradiation are highly stochastic sources of energy. Nevertheless, to some degree, both are usable almost everywhere and are therefore very convenient energy sources. In the current paper, the performance of a small wind-photovoltaic (PV) panel hybrid system connected to the grid with or without storage equipment is estimated. The main purpose is to investigate possibilities of increasing the renewable fraction, which would reduce the need for electrical power from the grid, at different deviations of the unit consumer graph, while the yearly average consumption remains the same. The other important variable in calculations is battery size. Weather data is acquired from public meteorological databases.
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