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jbw5306_Qimage.pdf - Wind Resource Analysis Questions John...

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Wind Resource Analysis Questions John Worthley, [email protected], 10 September 2017 1. Figure 1: Increase in size of commercial wind turbines from 1980-2030 3 As turbines increase in size and produce more energy, more turbine building costs will be offset by the produced power. 2. The capacity factor is the actual output as a proportion of a wind turbine maximum capacity. As an example, if a 9-MW turbine creates power for one year at 3 MW, its capacity factor is 33% over one year. This capacity factor determines wind turbine efficiency relative to an ideal output that is used for comparison. In the last couple decades, wind power capacity factor measuring the average output energy has been measured in the 30 35% range of the name plate capacity for on shore wind in Europe. 2 However, the mean realized value can be lower. According to a NREL report, capacity factors for the average offshore capacity of Belgium and Germany were 42% and 47%. A discrepancy exists here because the global average of 37% is a little lower.
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3. The stated project cost of the Burbo Ban offshore in the United Kingdom cost 181mill EUR for 25
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