Nowadays, more and more people use renewable energy sources for personal or commercial purposes. Electricity generation in home conditions is mainly done with solar panels, while for commercial purposes more powerful wind turbines are being used. In many countries, micro-generation is stimulated by “green tariffs”: the energy supplied to the grid obtained using micro-generation of renewable energy sources, is bought by utilities at a higher price than they sell electricity to consumers. The difference is compensated by the state. This idea is to promote the development of distributed generation and work to improve the reliability of power grids. In addition, the development of micro-generation will help to reduce consumption during peak hours and energy costs.