The City of Zagreb subsidizes the costs of procurement and installation of renewable energy systems in the area of the City of Zagreb. Renewable energy sources within the meaning of this Decision shall be considered as: solar collector systems for heating and preparation of hot water; photovoltaic systems for the production of electricity; heating and hot water heating systems for pellets; heating and hot-water heating systems for combustion pyrolytic furnaces; heat pump system for the preparation of hot water, heating and cooling and wind generator system for producing electricity for own consumption.