In solar thermal energy, collectors convert solar radiation into heat, which is transferred through a water-glycol circuit to a hot water or buffer tank.
In photovoltaic modules, solar radiation is converted into electrical voltage, which is fed into the building's power grid through an inverter.
Photovoltaic power can be converted into heat by Power to heat modules like the tubra-eTherm. It can also be stored in buffer tanks and used for heat applications.