HOW MUCH NET ENERGY DOES A WIND TURBINE PRODUCE
HOW MUCH NET ENERGY DOES A WIND TURBINE PRODUCE ?
wind farms can produce electricity whenever wind speeds are between around 8 to 50km/h which is around 75 percent of the time .the trouble is that the wind doesn't blow at a constant rate for all of that time,and consequently aften falls below the optimum speed for electricity production.
As a result, a wind turbine rated at,say,two megawatts typically has a much lower average output over the course of a year,amonting to just 30percent of this installed capacity figure,or around 600 kilowatts. critics of wind power add that even these average figures mask the impact of meterological conditions. for examples,
bitterly cold weather can frequently coincide with high pressure systems,which leads to there being virtually no wind at all-and therefore no power from wind turbines,just when it's most needed.
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