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Currently at prototype testing stage, products using the technology could be in commercial production by 2012. Rodney Rice, PV business development manager at Corus Colours, concedes that metal Dyesol panels only offer half the output of silicon-based arrays when tested in full sun conditions, but says they come into their own in the changeable British climate. Because its copying photosynthesis, its able to extract benefit from lower light levels, says Rice. When you factor in less than perfect conditions such as low light levels, cloud cover and shading it will close the gap.

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