2025年８月分～10月分（2025年7月～9月使用分）の燃料費調整単価については、国の「電気・ガス料金支援」による以下の割引単価を差し引きます。料金割引の適用について、お客さまからのお申込みは不要です。
|
Discount price (tax included) |
||
|
August and October 2025 |
September 2025 |
|
|
Low voltage customers |
2.00 yen/kWh |
2.40 yen/kWh |
- 対象月分の電気ご使用量に上記割引単価を乗じて算定される金額が割引額となります。
契約種別：従量電灯Ｂ〔特定小売供給約款〕、契約電流：30Ａ、使用電力量：250kWhのご家庭の場合、2025年8月分、10月分の各月の割引額は、500円（＝2.00円/kWh×250kWh）、2025年9月分の割引額は、600円（＝2.40円/kWh×250kWh）となります。
- Please see below for the discount amount applied to the fixed price menu
- 「電気・ガス料金支援」の詳細については、国の専用ダイヤルまたは資源エネルギー庁の特設サイトにてご確認ください。
電気・ガス料金支援 事務局 お問い合わせ窓口：0120-013-305
受付時間 平日9～17時
This is a system to adjust electricity rates according to the amount of fluctuation in the average fuel price over a three-month period from 27,400 yen/kiloliter (the crude oil equivalent fuel price that is the basis for the April 2019 electricity rate review) in order to reflect fluctuations in thermal fuel costs (crude oil, liquefied natural gas, and coal) in electricity rates as quickly as possible.
- expansion
- Average fuel price over three months (yen/k1) (in 100 yen increments)
For customers who have contracts based on Terms and Conditions of Electricity Supply and supply and Terms and Conditions of Supply and Demand Contract, no upper limit will be set for fuel cost adjustments.
Fuel adjustment unit price price fluctuates monthly based on the average fuel price calculated from the prices of crude oil, liquefied natural gas, and coal in trade statistics. If the average fuel price falls below 27,400 yen, electricity rates will be adjusted downward, and if it exceeds this amount, electricity rates will be adjusted upward.
As a past example, in fiscal 2022, Fuel adjustment unit price increased due to rising global fuel prices.
- The graph shows Fuel adjustment unit price for customers whose contracts are based on Terms and Conditions of Electricity Supply and supply and Terms and Conditions of Supply and Demand Contract that do not set an upper limit for fuel cost adjustment.
Please note that the unit prices for February and March 2023 do not reflect the discount provided by the government's "Electricity and Gas Price Sudden Change Mitigation Measures Project."
Electricity charge = Base charge (tax included) + Power usage charge (tax included) ± Adjustments for fuel costs, etc. (tax included) (Notes 1 and 2)-Bank transfer discount discount (tax included) + Renewable energy surcharge (tax included)
- If the average fuel price rises from the base value, it will be +, and if it falls, it will be -.
- Adjustments for fuel costs, etc. includes the remote island universal service adjustment amount.
Adjustments for fuel costs, etc. is calculated by multiplying Fuel adjustment unit price and Remote island universal service adjustment unit price by the amount of electricity used. Fuel adjustment unit price and Remote island universal service adjustment unit price are reviewed every month.
平均燃料価格が27,400円を上回った場合（プラス調整）
|
(Average fuel price - 27,400 yen) |
× |
Base unit price
1,000 |
- If the average fuel price exceeds 41,100 yen, the maximum price will be 41,100 yen.
(However, for customers who have contracts based on Terms and Conditions of Electricity Supply and Terms and Conditions of Supply and Demand Contract, no upper limit will be set for fuel cost adjustments.) - Round to three decimal places.
平均燃料価格が27,400円を下回った場合（マイナス調整）
|
(27,400 yen - average fuel price) |
× |
Base unit price
1,000 |
- Round to three decimal places.
- 基準単価：平均燃料価格が1,000円／キロリットル変動した場合の電気料金単価への影響額
Customer's base price (for low-voltage supply): 0.136 yen/kWh
- The above unit price includes the equivalent of consumption tax, etc.
|
A: |
Average crude oil price per kiloliter during the average fuel price calculation period |
|
B: |
Average LNG price per ton during the average fuel price calculation period |
|
C: |
Average coal price per ton during the average fuel price calculation period |
α: 0.0053 β: 0.1861 γ: 1.0757
α, β, and γ are conversion coefficients for calculating the average price in crude oil equivalent (constant values calculated from the crude oil conversion coefficient and the calorific value composition ratio)
|
Period for observing fuel price performance |
Fuel adjustment unit price Applicable month |
|
January 1st - March 31st |
June electricity bill |
|
February 1st - April 30th |
July electricity bill |
|
March 1st - May 31st |
August electricity bill |
|
April 1st - June 30th |
September electricity bill |
|
May 1st - July 31st |
October electricity bill |
|
June 1st - August 31st |
November electricity bill |
|
July 1st - September 30th |
December electricity bill |
|
August 1st - October 31st |
Electricity bill for January of the following year |
|
September 1st - November 30th |
Electricity bill for February of the following year |
|
October 1st - December 31st |
Electricity bill for March of the following year |
|
November 1st to January 31st of the following year |
Electricity bill for April of the following year |
|
December 1st to February 28th of the following year (if the following year is a leap year, until February 29th of the following year) |
Electricity bill for May of the following year |
We will display Fuel adjustment unit price, Remote island universal service adjustment unit price, and average fuel price at our sales offices, and will also inform you of Fuel adjustment unit price and Remote island universal service adjustment unit price on your monthly meter reading notice, etc.
