Efficient production and sharing of own electricity in apartment buildings represent a great opportunity for apartment owners to reduce regular housing costs. The most suitable source of renewable energy is usually a photovoltaic system, which can be combined with a battery. Therefore, UCEEB CTU in cooperation with the Guild of Accumulation and Photovoltaics has prepared a one-day course for the professional public, during which participants will learn about the technical, financial and legal aspects of this issue.