Stationary independent photovoltaic system built on a rooftop, with German products. Energy produced is used for own needs, it covers most of the energy costs of a family house. In the night, electricity is provided by batteries that are charged during the day by the photovoltaic system.
The roof has installed additional collectors for hot water. In this way the house is energy independent and very rarely requires the use of electricity from the grid. The system was completed and put into operation in September 2009.