Development of the FY2013 Version of "General Energy Statistics of Japan" (Japanese)

The "General Energy Statistics of Japan" is typical assembled statistics issued by the Agency for Natural Resources and Energy under the Ministry of Economy, Trade and Industry and used as a basic statistics for Energy and Environment policy making area. The current version of the statistics is based on statistical assembling system developed by the author in 2005, but its accuracy is partially degrading especially after the Great East Japan Earthquake that had certain impact on the domestic energy demand and supply structure in Japan. On the other hand, the "Energy Consumption Census" started in 2005 is motivated to identify energy demand and supply structure such as Commercial sector and the government of Japan spends quite a resources for that for these years. But the census just applied conventional statistical agglomeration method proved that such conventional one does not have enough accuracy to improve the "General Energy Statistics" and no way to use the census for that purpose. Here the author developed new version of "General Energy Statistics" from FY1990 to the current fiscal year to solve the problems applying various improvement measure such as re-calculation of energy and carbon balance of oil refinery sector by estimating calorific value and carbon emission factor by oil brands for supply side, and re-agglomeration of the "Energy Consumption Census" using new agglomeration method developed by the author in 2013, replacement of transportation fuel statistic to the new "Automobile Fuel Consumption Census" for demand side and so on. The new version of "General Energy Statistics" is expected to serve as a basic statistics for Energy and Environment policy making as well as the current version. The new version is compatible with mid-class classification of Japan Industrial Classification Standard and successfully achieved streamlining of the industrial classification concept and enhanced resolving power of the statistics maintaining almost equal accuracy with the current version. Forthcoming challenges are as follows; the statistics still requires steady efforts for further improvement of accuracy, strengthening the renewable energy part of the statistics and development of local and regional energy statistics based on the new system. For that purpose, the statistics require continuous cooperation of related organizations and authorities.