風力発電の可能性

メソスケールモデルと地理情報システムを利用した関東地方沿岸域における洋上風力エネルギー賦存量の評価


山口 敦1), 石原 孟1)

1) 東京大学大学院工学系研究科総合研究機構

(Received: October 10, 2006)
(Accepted for publication: February 28, 2007)


SUMMARY
Offshore wind climate along the coast of Kanto area was investigated by a mesoscale model and wind energy potential considering economical and social criteria was estimated by Geographical Information System (GIS). The prediction accuracy of the annual mean wind speed by the mesoscale model was 4.8%. The estimated wind climate shows that offshore Choshi, the annual mean wind speed is significantly higher than other area. Without considering any economical or social criteria, the total potential along the coast of Kanto area is 287TWh/year, which is almost equal to the annual supply of Tokyo Electric Power Company. If only the bottom mounted foundation is used, the potential varies from 0.21TWh/year to 7.98TWh/year depending on the scenario. On the other hand, when floating foundation is taken into consideration, the potential is 100.59TWh/year even for the most conservative scenario.