Can renewable energy power the world?
Can renewable energy power the world?

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Can renewable energy power the world?

6.5 Power and energy from wind turbines

The power output of a wind turbine varies with wind speed. Every turbine has a characteristic wind speed–power curve, often simply called the power curve, shown in Figure 9.

Figure 9 Typical wind turbine wind speed–power curve example

The energy a wind turbine will produce depends on both its wind speed–power curve shown in Figure 9 and the wind speed frequency distribution shown in figure 10 at the site.

Figure 10 A wind speed frequency distribution example for a typical site, showing the number of hours the wind blows at different speeds during a year

Using the data from these graphs enables us to calculate a wind energy distribution graph, which you’ll examine next.


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