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		.News WIND TURBINE WINS GREEN CHALLENGE '09 Amsterdam, September 25 2009 A nearly invisible rooftop wind turbine has won the €500,000 Postcode Lottery Green Challenge 2009. "It's beyond a dream,” said English entrepreneur Dean Gregory when Skype founder Niklas Zennström, a contest juror, announced his name. "This means we can focus solely on bringing this to market." Gregory entered the Challenge on behalf of the English company The Power Collective Limited – after finding out about it two days before the deadline. Each year, the Dutch Postcode Lottery gives away €500,000 to the inventor of the best climate-friendly invention.