Study finds that many homes turbines fail to live up to claims

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.