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An atlas showing average annual wind speeds in Japan has been produced by an organisation affiliated to the Japanese Ministry of International Trade and Industry. The New Energy and Industrial Technology Development Organisation (NEDO) produced the 20-page colour atlas for local governments and municipalities that wish to promote non-fossil fuels. The atlas divides Japan into 380,000 square kilometre segments of six colours to rank average annual wind speed at a height of 30 metres over land. According to NEDO, the most competitive wind sites -- those with winds stronger than 6 m/s -- cover an area of 53,000 square kilometres. When mountainous areas of more than 1000 metres above sea level are excluded, the practical area for turbine sites drops to 21,000 square kilometres. This increases, however, to 40,000 square kilometres when sites with average wind speed of 5-6 m/s are included.

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