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CLFR: how it works

Liddell solar thermal station ( the world's first solar-coal fired power augmentation facility) in Australia, installed by AREVA Solar.

Concentrated Solar Power (CSP) solutions use lenses or mirrors to direct a large area of sunlight onto a small surface. Compact Linear Fresnel Reflector (CLFR) technology is a form of CSP that is valued for its simple, robust design.

It uses modular, flat mirrors to focus the sun's heat onto long, elevated "receivers," which consist of a system of boiler tubes through which water flows. The concentrated sunlight boils the water in the tubes, generating saturated and superheated solar steam for use in power generation and industrial steam applications, thereby generating electricity.

Scalable and adaptable technology

CLFR technology can be scaled according to power plant needs, from 50 to 500 MWe (power) and 10 MWe to 50 MWe (boosters and industrial steam), and applied in 3 different ways:


The steam generated from concentrated solar power is used to drive steam turbines, producing electricity.

Booster application

Solar steam generators increase the quantity of available steam for natural gas-fired and coal-fired power plants.
This solar steam enables power plants to increase electricity production at peak periods and reduce plant emissions.
This application can be used to extend plant life for biomass or geothermal facilities.

Shema Standalone Power Plants

Click to enlarge

AREVA showcase:  CLFR performance and specifications

  • Temperature :
    • up to 400°C (750°F)
    • up to 482°C (900°F), 
      available in 2011
  • Pressure :
    • up to 106 bar (1 535 psia)
    • up to 165 bar (2 400 psia),
      available in 2011
  • Annual Energy per 5.3 Hectares
    • 26 850 MWth (91 630 MMBtu)

Innovation in action

AREVA’s focus is improving technology performance to achieve:

  • Improved solar-to-heat efficiency by increasing superheated steam temperature
  • Increased capacity factor by developing energy storage solutions through hydrogen storage activity and expertise
  • Hybridized solar with biomass or gas-fired power plants

AREVA acquires the U.S. solar company Ausra