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Concentrating Solar Power

Concentrating solar power creates electricity through generating heat using mirrors to concentrate the sun's rays. The most proven form of concentrating solar power is generated through parabolic troughs, the technology to be used by Acquasol in Port Augusta. Parabolic troughs focus sunlight onto a pipe to heat fluid passing through it to around 400 degrees Centigrade. The heat is then used to create steam to drive a traditional turbine.

The second major form of concentrating solar power comes from solar dishes. These focus sunlight onto a single point to create heat. The third form of concentrating solar power comes from solar towers. These use a circular field of mirrors to focus sunlight on a central tower to create heat.

Parabolic troughs
Solar dish
Solar tower
"Parabolic trough concentrating solar power plants currently provide the lowest cost source of solar generated electricity available.
      US Department of Energy, 2004
Solar thermal energy with storage is the only alternative energy source - other than nuclear energy - that can supply all our energy needs
The Clean Fuels Institute, 2006.