Due to the publication of fuel prices from January to March 2009 (trade statistics prices 
for crude oil, liquefied natural gas (LNG) and coal published by Ministry of Finance Japan), 
a fuel-cost adjusted unit price for June 2009 is fixed as per enclosure. 

Fuel cost adjustment system: 
"Fuel cost adjustment system" is a system designed to automatically adjust monthly electricity 
fees based on fluctuations in (actual recorded) fuel prices for crude oil, LNG and coal. 

  http://www.tepco.co.jp/en/customer/guide/fuelcost-e.html

Appendix: Fuel Cost Adjustment in Electricity Fees for June 2009(PDF 18.6KB)