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The cost development of solar thermal energy PDF Print E-mail
Alternative Energy - Solar Power
Wednesday, 17 June 2009 14:30

Incremental changes can result in substantial cost reductions

The technologies for producing electricity from solar thermal energy can be divided into three main categories:

  • Parabolic trough and Fresnel systems
  • Central receiver systems, including the solar updraft tower
  • Parabolic dish systems, usually combined with a Stirling heat engine

The first commercial CSP plant, which was built in California in the 1980s, used the parabolic trough concept. It has a total capacity of 354 MW. For many years, this was the only large scale CSP plant in the world. Elsewhere, only small demonstration plants were built, as the high investment cost hampered further deployment.

In 2006, a new commercial 1 MW parabolic trough CSP plant was built in Tucson, Arizona. Since then, the development of CSP as a commercial electricity generating technology has taken off. Many CSP projects are currently being built, the majority of which are in Spain and the USA. It is very likely that because of this market boom, investment costs for CSP will go down. The question is how much and how quickly.

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