The Swiss natural scientist Horace Bénédict de Saussure
builds a “simple solar water heater”, which is made of a wooden
box with a black bottom and covered with glass.
The solar collector reaches temperatures of almost 90 °C.
William Bailey develops a more ergonomic, compact designed collector
and becomes the market leader in solar thermal technology.
The Bailey system is the first thermosyphon system
that places the tank on the roof and a collector underneath.
110 years after the first thermosyphon system,
SUNPAD starts a new era of solar water heater systems.
Solar energy has never been cheaper, simpler and more aesthetic!