5Official Journal of the European Communities. DIRECTIVE 2001/77/EC of the European parliament and of the council of 27 September2001 on the promotion of electricity produced from RES in the internal electricity market [ EB/OL ]. http:∥europa. eu. int/eur-lex/pri/en/oj/dat/2001/1-283/1-28320011027en00330040. pdf, 2005 - 01 - 05.
6Nick Eyre. External costs-what do they mean for energy policy [ J ].Energy Policy, 1997,25 ( 1 ): 85 ~ 95.
7Lawrence J Hill and Stanton W Hadley. Federal tax effects on the financial attractiveness of renewable versus conventional power plants[J]. Energy Policy, 1995,23(7) :593 ~ 597.
8Graham A. Davis, Brandon Owens. Optimizing the level of renewable electric R&D expenditures: using real options analysis [ J ]. Energy Policy,2003,31 (15):1 589~1 608.
9Muriel Watt, Hugh Outhred. Australian and international renewable energy policy initiatives [ J ]. Renewable Energy, 2001, (22): 241 ~245.