TEPCO Illustrated

Electricity Rates and Rate Systems
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Electricity Rates Revision History

As of the end of FY2015

Subject
Companies
Date Effected Rate of Adjustment(%) Change Factors
9 power companies August 31, 1951 Average 30.1 (Tokyo 24.0) Result of rising price of goods and increased capital expenses because of first asset re-evaluation
9 power companies May 11, 1952 Average 28.0 (Tokyo 24.2) Result of rising price of goods and increased capital expenses because of second asset re-evaluation
9 power companies October 1, 1954 Average 11.2 (Tokyo 11.6) Result of increased capital expenses because of power development and third asset re-evaluation
Tohoku Electric Power July 14, 1957 Tohoku 17.8 Result of increased capital expenses from power development
Hokuriku Electric Power Hokuriku 18.14
Kyushu Electric Power March 21, 1961 10.5 Results of increased capital expenses from power development and poor balance of accounts after suspension of hydroelectric and thermal power adjustment fund
TEPCO August 5, 1961 13.7 Result of increased capital expenses from power development and expansion and strengthening of transmission/distribution equipment, and rising fuel costs
Tohoku Electric Power December 1, 1962 12.63 Results of increased capital expenses from power development and rising fuel costs and purchased power costs
Chubu Electric Power April 1, 1965 7.89 Results of increased capital expenses from power development and rising fuel costs
Hokuriku Electric Power August 9, 1966 6.38 Results of increased capital expenses from power development
Chugoku Electric Power October 15, 1966 -3.91 Result of rate gap correction after management streamlining
Shikoku Electric Power September 29, 1973 Shikoku 17.75 Result of increased investment for pollution prevention and environmental mitigation, spike in fuel costs, soaring price of various goods,and increased capital expenses from power development
Kansai Electric Power Kansai 22.23
9 power companies June 1, 1974 Average 56.82 (Tokyo 63.04) Result of soaring fuel costs, costs of environmental measures and increased capital expenses from power supply equipment expansion, and soaring price of various good
4 power companies June 26, 1976 Hokkaido 30.33 / Tohoku 28.47 Result of soaring fuel costs and increased capital expenses from soaring price of various good
Hokuriku 26.06 / Kyushu 24.84
Kansai Electric Power August 10, 1976 22.22
4 power companies August 31, 1976 Tokyo 21.01 / Chubu 22.47
Chugoku 22.19 / Shikoku 22.81
Hokkaido Electric Power February 12, 1980 34.23 Result of soaring fuel costs and increased capital expenses
8 power companies April 1, 1980 Average 50.83 (Tokyo 52.33)
(Excluding Hokkaido)
Hokkaido Electric Power October 1, 1981 18.11
10 power companies January 1, 1988 Average for 9 power companies
-17.83(Tokyo -19.16)
Result of reduction of fuel costs
10 power companies April 1, 1989 Average -2.96 (Tokyo -3.11) Revision of base price with implementation of consumption tax
10 power companies January 1, 1996 Average -6.29 (Tokyo -5.39) Reduction of base price based on management efficiency initiative results and outlook
10 power companies February 10, 1998 Average -4.67 (Tokyo -4.20)
10 power companies October 1, 2000 Average -5.42 (Tokyo -5.32)
TEPCO April 1, 2002 -7.02
Tohoku Electric Power July 1, 2002 -7.1
Chubu Electric Power September 1, 2002 -6.18
7 power companies October 1, 2002 Hokkaido -5.39 / Hokuriku -5.32 / Kansai -5.35 / Chugoku -5.72 / Shikoku -5.22 / Kyushu -5.21 / Okinawa -5.79
TEPCO October 1, 2004 -5.21
3 power companies January 1, 2005 Tohoku -4.23 / Chubu -5.94 / Kyushu -5.46
5 power companies April 1, 2005 Hokkaido -4.04 / Hokuriku -4.05 / Kansai -4.53 / Chugoku -3.53 / Shikoku -4.23
Okinawa Electric Power July 1, 2005 -3.27
4 power companies April 1, 2006 Tokyo -4.01 / Kansai -2.91 / Chubu -3.79 / Kyushu -3.71
6 power companies July 1, 2006 Hokkaido -2.85 / Tohoku -3.05 / Hokuriku -2.65 / Chugoku -2.51 / Shikoku -2.57 / Okinawa -3.24
Hokuriku Electric Power March 1, 2008 Revision of wheeling charge
Chubu Electric Power April 1, 2008 Reduction of base price based on management efficiency initiative results and outlook
8 power companies September 1, 2008 Hokkaido ― / Tohoku ― / Tokyo ― / Kansai ― / Chugoku -1.00 / Shikoku ― / Kyushu -1.18 / Okinawa -0.45 Revision of electricity rates as a result of soaring fuel costs and reduction of base price based on management efficiency initiative results and outlook
TEPCO September 1, 2012 8.46 Result of increased fuel costs because of the stop of nuclear power plants, etc.
Chugoku Electric Power April 1, 2013 (*1) 0.06YEN Increase in fuel costs along with the introduction of taxes to cope with global warming
2 power companies May 1, 2013 Kansai 9.75 / Kyushu 6.23 Result of increased fuel costs because of the stop of nuclear power plants, etc.
Hokuriku Electric Power July 1, 2013 (*1) 0.04YEN Increase in fuel costs along with the introduction of taxes to cope with global warming
3 power companies September 1, 2013 Hokkaido 7.73 / Tohoku 8.94 / Shikoku 7.80 Result of increased fuel costs because of the stop of nuclear power plants, etc.
Chubu Electric Power May 1, 2014 3.77
2 power companies June 1, 2014 (*1) Hokuriku 0.04YEN / Chugoku 0.06YEN Increase in fuel costs along with the increase of tax rates to cope with global warming
Hokkaido Electric Power Nov 1, 2014 15.33 Result of increased fuel costs because of the stop of nuclear power plants, etc.
Kansai Electric Power Jun 1, 2015 8.36

(Notes)

  1. Stated as increased unit prices (including the consumption tax and other costs calculated based on the tax rates at the time of the price increase)

(Reference Data)

Subject Companies Date Effected Revision Revision Factors
8 power companies October 1978 - Average drop in unit price 1.35 yen Temporary rate reduction measures following high yen
March 1979 (Tokyo 1.65 yen) (Exc. Hokkaido)
10 power companies Jun 1986 - Average drop in unit price for 9 power companies Temporary rate reduction following high yen, drop in crude oil prices, etc.
December 1986 2.2 yen (Tokyo 2.39 yen)
10 power companies January 1987 - Average drop in unit price for 9 power companies
December 1987 3.10 yen (Tokyo 3.50 yen)
10 power companies November 1993 - Average drop in unit price Temporary rate reduction measures following high yen, etc.
September 1994 0.35 yen (Tokyo 0.37 yen)
10 power companies October 1994 - Average drop in unit price
June 1995 0.35 yen (Tokyo 0.37 yen)
10 power companies July 1995 Average drop in unit price Temporary rate reduction measures following high yen, etc. (expansion counting)
to time of rate change 0.4 yen(Tokyo 0.42 yen)