受到2005年「京都議定書」的生效、全球化石能源價格波動及環保意識驅動下,各國積極推廣再生能源的發展;風力發電是全球公認的潔淨能源,在CO2的排放是零排放,可稱為「綠色能源」。先進國家均積極投入風力發電的研發及裝置,已達減碳及能源替代;陸域及離岸式大型風力發電機為各國主要開發主軸,直到近年,小型風力發電機的獨特性及發展潛力才受到重視。小型風力機應用層面較為廣泛,需求與國家政策及補貼措施有著直間關聯,尤其在補貼措施將直接影響裝置成本及回收年限,將有助於民眾對小型風力機的安裝意願,本研究回顧全球及台灣對小型風力機的國家政策,並以實際案例計算成本效益,最後再參考國際間小風機的補貼比例及加入環境效益等參數作一敏感度分析,估算差異性。
Various countries have actively promoted the development of regenerable/renewable energy in responses to implementation of Kyoto protocol, volatile fossil fuel prices and increased consciousness for environment protection. Wind energy is globally acknowledged as green power source due to zero CO2 emission. Most of developed counties have been dedicated to wind energy development in order to reduce carbon emission and fulfill the energy replacement for fossil fuel. Although interest remains mainly in large wind turbines for onshore and offshore installation, small wind turbine have been substantially considered for its uniqueness and application potential. Small wind turbine has a relatively broad application and the demand is directly correlated to the government policy and subsidy measure. As the subsidy measure has direct influence on installation cost and payback period, general public are willing to install small wind turbine. In present study, the policies of various governments for small wind turbine including Taiwan were reviewed and several actual cases were utilized for calculating cost-benefit. Moreover, sensitivity analysis was conducted to determine the differences amongst countries incorporating subsidy ratio for small wind turbine installation and environmental benefit as parameters.