Secret Energy Turbine: rooftop wind power in stealth mode

Few people would argue that having a rooftop wind turbine could help offset your power bills. Your neighbors, however, might not appreciate the sight of a windmill on your roof, nor would they like the sound of its blades whistling through the air. Don’t give up on the idea yet, though, because British inventor Rupert Sweet-Escott has come up with a product that he claims addresses those problems. His Secret Energy Turbine (SET) looks like an ordinary chimney stack and is boasts almost completely silent operation.

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