Once again a Scottish Renewables spokesperson indulges in statistical manipulation in an attempt to hide the woeful performance of wind turbines (April 20).
The load factor calculated by Stuart Young, in a report issued by the John Muir Trust, used published National Grid data and showed a load factor for 2010 of 21.1%. The corresponding load factor reported by DECC for 2010 was 21.4%.
This remarkable alignment would suggest the figures by JMT to be considerably more reliable than the higher figures claimed by Scottish Renewables.
After reading the Scottish Renewables letter, I checked readily available data and found that on April 20, real-time data showed a forecast peak wind generation of 134 MW out of a total metered capacity of 3226 MW, giving a load factor of around 4%.
G. M. Lindsay.
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