Here's an amusing bit of Green perversity:
Home wind turbines are generating a fraction of the energy promised by manufacturers, and in some cases use more electricity than they make, a report warns today. The results of what is thought to be the most comprehensive study undertaken of the industry show the worst performers provided just 41 watt-hours a day - less than the energy needed for a conventional lightbulb for an hour, or even to power the turbine's own electronics.
On average the turbines surveyed provided enough electricity to light an energy-efficient house, but this still only represented 5%-10% of the manufacturers' claims, said consultants Encraft. ...
It found the best performing turbines would generate "clean" electricity equivalent to that needed to manufacture them in less than two years, while the worst performing ones would take 40 years.
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