Indirect use of solar energy

The indirect use of solar energy deals with energy cycles caused by sun: water- and wind circles.

Water is in constant circulation: evaporation - ascension - raining - evaporation. This constant flowing can make water to be used to produce electricity by water crafts. Wind energy is the kinetic energy of moved air mass in the atmosphere. Also induced by the radiation warmth of the sun. The use of wind energy is one of the oldest forms to use energy out of the environment and was already known in the antiquity.

Indirect solar-energy-utilisation can be: