| 2004-2005 | Member, Working Group of Electric Power Industry, Committee on Regulatory Impact Analysis in the Field of Public Utility Rates, Cabinet Office (CAO) |
| 2005-2006 | Member, Subcommittee to Evaluate System Reform, Electricity Industry Committee, Ministry of Economy, Trade and Industry (METI) |
| 2005-2007 | Member, Energy Working Group, Subcommittee on Competition Enhancement, New Growth Policy Committee, Ministry of Economy, Trade and Industry (METI) |
| 2007-2009 | Expert Member, Council for the Promotion of Regulatory Reform, Cabinet Office (CAO) |