Apart from heating domestic water, the system also serves as heating support and the heat pump is regulated according to the solar power output. The central piece of the system consists of a hydraulic module with combination storage, which enables the system to be integrated into any heating environment. The freely programmable controller can take over the functioning of the entire heating system. It is programmed by soleg GmbH according to the customers needs. The system is offered with different photovoltaic and heat pump outputs. The size of the combination storage can also be varied.