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February 8, 2007

Now concentrate

solar cookers
Mirror, mirror on the floor…

Concentrating solar power (CSP) systems could be the energy of the future in off-grid locations, both small and large scale. Lenses or mirrors focus a large area of sunlight into a small beam. In power stations the beam shines on a vessel that contains a gas or liquid that can be heated up to around 400C (750F) enough for conventional steam turbine. Small-scale off-grid CSP power stations don’t have to be hugely expensive either.

In fact, the basic idea of concentrated solar power is the same as in solar cooking and new methods of water pasteurization – already widely used in the third world – eliminating the need for biomass as a fuel.

But what makes the plants really efficient is their recycling of energy.

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