清洁而可持续的能源，布什政府认为可再生能源工艺能在可持续电力生产中起重要作用（Clean and Sustainable, The Bush Administration＇s View on the Role that Renewable Energy Technologies Can Play in Sustainable Electricity Generation, Darid

此文是美国能源部能源有效利用和可再生能源助理部长David k．Garman在2004年4月27日参议会一能源与自然资源委员会上证言的一部分。布什政府认为：利用可再生的自然能源能够帮助我们提供未来的能源需求，而对环境的冲击比常规能源小。能源部要求，在2005财政年度中可再生能源工艺预算总计3．748亿美元，     

Risk Analysis in Renewable Energy： Assessment of the Vulnerability of the Environment and Community

As a result of recent accidents, society is becoming more conscious and concerned about the risk that are under to the environment and communities. A proposal of assessment of the vulnerability of the environment and community is presented here under a holistic perspective using fuzzy logic as a formal tool. An internal factor of the risk of a system under a given threat is assessed. Risk is considered as the union between the threat and the vulnerability of the environment and community. This approach shows that the reduction in either or both of them makes a reduction in the risk content as well. The main purpose of this proposal is not to obtain a single value as output; in fact the result is a map which can contribute to the different areas of the community in decision making.