生命周期评价法(LCA)是定量化、系统化评价产品环境影响的国际标准方法，已经纳入ISO14000环境管理系列标准而成为国际环境管理和产品设计的一个重要支持工具。本文利用LCA法对不同能源发电系统所造成的环境负荷进行全生命周期的实证研究，选取了不同类型的火力发电、可再生能源发电和核电系统的排放、污染和资源消耗三个环境负荷指标进行比较分析，并以归一化的环境负荷率界定清洁能源发电系统的范围。
The Life Cycle Assessment(LCA) is an international standard technique to assess the environmental aspects and potential impacts associated with products and services,using quantitative and systematic approaches. It has become an important supporting tool for environmental management and product design on an international level,being included in the series of ISO14000 standards for environmental management. This paper,using the LCA technique,conducts data-based research in the environmental load caused by energy power generation in various ways. It demonstrates comparative analysis with selecting three indexes of emission,pollution and energy consumption from thermal power,renewable energy and nuclear power generation in various ways,and to define the range of the clean energy power generation using normalized environmental load ratio.
