Solar thermal energy is described as the use of solar energy to produce domestic hot water and hot water for heating. There are two types of use for solar thermal energy, passive and active.
 



With passive use, rooms are for example fitted with windows which permit them to be heated by means of incident sunlight without the use of technical equipment. Active use refers to the use of suitably construted absorbent surfaces.
 
These collect the sunrays and convert them into energy. Such work surfaces can for example be solar collectors fitted on the roof.
 
By the way: The state subsidises this environmentally friendly means of energy production and use with financial incentives. We would be pleased to assist you in applying for subsidies.