The right answer is solar power system.
Solar energy is currently used in two ways:
1. Solar thermal energy is used for the production of domestic hot water and as heating support.
2. The photovoltaic effect used in photovoltaic solar cells makes it possible to directly convert the energy of the solar rays into electricity.
The advantages of solar thermal energy:
An inexhaustible source of energy
Free solar energy
No CO2 emissions
Integration possible in existing heating installations
Less impact of price changes affecting the energy market