1. 1) Ministry of Environment, “Greenhouse Gas Emissions in FY2004”, http://www.env.go.jp/earth/ondanka/ghg/2004ghg.pdf.
2. 2) The Federation of Electric Power Companies of Japan, “Environmental Action Plan by the Japanese Electric Utility Industry”, http://www.fepc.or.jp/english/env-action/action-plan2005.pdf.
3. 3) The Central Electric Power Council, Summary of Electric Power Service Plan in FY2006, http://www.cepc.gr.jp/.
4. 4) The Japan Society of Mechanical Engineers, Research Committee Report on Steam Turbine Technology for Electric Power Industry in the 21st Century, pp.169-176 (2002).