Due to the publication of fuel prices from May 2012 to July 2012 (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 October 2012 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 October 2012 (PDF 22.0KB)
Attachment 1: Calculation of Fuel Cost Adjusted Unit Price and Electricity Fees for October 2012 (PDF 48.7KB)
Attachment 2: Calculating Electricity Fee for each contract ampere in October 2012 (PDF 17.2KB)