"The wind hasn’t provided much relief to Texans during the recent stretch of a 100-plus degree days, but it has helped to keep air-conditioners humming.
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Most of Texas’ wind farms, located in West Texas, reach their peak output in the evening, when the winds blow hardest. They do little for the state’s needs during the hottest afternoon hours and are so far removed from the areas of heaviest demand that they often have little to no impact. But the growing number of wind projects along Texas’ coast has helped boost wind’s contribution during peak summer hours since coastal winds tend to pickup in the afternoons.
Robert Bryce, an Austin-based author who has been outspoken in his criticism of wind power, says wind power doesn’t do enough to contribute to the state’s power needs. He notes that wind’s variability and the poor peak-day output from the West Texas wind farms means ERCOT only counts 8.7 percent of the installed wind capability toward its total reserves. 'Yes, the coastal turbines are doing better than the inland turbines, but coastal turbines face much more resistance from local residents than ones that are located near Big Spring or Sweetwater,' Bryce said, as residents don’t like having the 450 foot-high towers blocking their coastal views."
http://fuelfix.com/blog/2011/08/10/wind-turbines-helped-to-keep-the-lights-turned-on/