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Breeze block

Letters

Does a target of 20% of electricity from wind generation make sense? If wind turbines on average over a year produce 30% of their installed power, total wind turbine capacity would have to equal 67% of the average power demand to achieve the 20% target.

There may be no wind just when maximum power is needed, so the capacity of other types of reliable generators would have to at least equal the maximum power demand.

Are the financial and environmental costs of this duplicated generation capacity and of the extra transmission system balanced by the benefits?

Ben Tatham (F), ben@thetathams.co.uk

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