How J:COM Denki works

You can use our products with peace of mind while maintaining the same quality.

Power distribution with quality intact
Power configuration
Check charges and usage

Mechanism of reliable power distribution while maintaining quality

(Figure) Power grid

Since we will use the same power transmission and distribution equipment (wires, substations, indoor wiring, etc.) of the old general electric utility as before, the quality and safety of electricity (possibility of power outages, etc.) will not change. Indoor construction * ・No presence required.

  • It may be necessary to replace the outdoor meter (watt-hour meter) (free of charge).
  • Based on an agency agreement between Sumitomo Corporation (hereinafter referred to as "Sumitomo Corporation"), a retail electricity provider, and our company, we supply electricity supplied by Sumitomo Corporation as J:COM Denki.
Hokkaido Electric Power area is here

In the Hokkaido Electric Power area, J:COM will be the retail electricity provider.

(Figure) Power grid
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About power supply configuration

FY2022 Actual figures (April 1, 2022 to March 31, 2023)

Approximately 20% of the power supply for J:COM 's electricity services that we procure is made up of renewable energy, including FIT electricity.

Click here for FIT Denki

■CO2 emission coefficient for each corporation (2022 actual value)
Electric utility name Basic emission factor
(kg-CO2/kWh)		 Adjusted emission factor
(kg-CO2/kWh)
J: J:COM West Co., Ltd. 0.421 0.438
J:COM Saitama East Japan Co., Ltd. 0.417 0.421
J: J:COM Sapporo Co., Ltd. 0.420 0.466
J:COM Shonan/Kanagawa Co., Ltd. 0.417 0.420
J: J:COM Chiba Co., Ltd. 0.417 0.462
J: J:COM Tokyo Co., Ltd. 0.417 0.430
Tsuchiura Cable Television Co., Ltd. 0.417 0.462
Cablenet Shimonoseki Co., Ltd. 0.422 0.468
J: J:COM Kyushu Co., Ltd. 0.423 0.470
Oita Cable Telecom Co.,Ltd. Co., Ltd. 0.423 0.470
Power supply composition of the entire J:COM Group (April 1, 2021 to March 31, 2022) Actual values

Click here for non-fossil certificate usage status of each corporation

  • Part of the cost of procuring this electricity is covered by a levy on renewable energy collected from all electricity users, including those who are not our customers, and the CO2 emissions of this electricity are treated as having the national average CO2 emissions of electricity, including thermal power generation.
  • This electricity includes hydropower, thermal power, nuclear power, FIT electricity, renewable energy, etc.
  • Imbalance replenishment from former general electric utilities and some of the electricity procured from other companies whose power plant cannot be specified are treated as "Others."
  • Totals may not add up to 100% due to rounding.

This breakdown has been created based on the "Guidelines for Electricity Retail Business" (established by the Ministry of Economy, Trade and Industry in January 2016 and revised in April 2023).

Planned value for FY2024 (April 1, 2024 - March 31, 2025)

J:COM 's electricity service is supplied by Sumitomo Corporation, a retail electricity provider. The power source composition (plan) of the company's procured power sources is as follows.

J:COM Group's overall power source mix (April 1, 2024 - March 31, 2025) Planned values

  • Part of the cost for Sumitomo Corporation to procure this electricity is covered by renewable energy levies collected from electricity users, including those who are not our customers. The CO2 emissions of this electricity are treated as having the national average CO2 emissions from electricity generated by thermal power plants, etc.
  • This electricity includes hydropower, thermal power, nuclear power, FIT electricity, renewable energy, etc.
  • Imbalance replenishment from former general electric utilities and some of the electricity procured from other companies whose power plant cannot be specified are treated as "Others."
  • This electricity includes solar, wind, geothermal, bio, and hydro (less than 30,000 kW).
  • Totals may not add up to 100% due to rounding.
  • This breakdown has been created based on the "Guidelines for Electricity Retail Business" (established by the Ministry of Economy, Trade and Industry in January 2016 and revised in April 2023).
  • The scope of application of the planned values for power source composition is the supply facilities maintained and operated by Tohoku Electric Power Network Co., Ltd., TEPCO Power Grid Co., Ltd., Kansai Electric Power Transmission and Distribution Co., Ltd., Chugoku Electric Power Network Co., Ltd., and Kyushu Electric Power Transmission and Distribution Co., Ltd. A transmission and distribution area that supplies electricity through.

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Electricity charges and usage
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You can also compare past usage by month, day, and hour, which is useful for power saving.

You can also compare past usage by month, day, and hour, which is useful for power saving.

The reduced "value price"
It's easy to understand

You can see at a glance how much cheaper you are compared to your local power company *1.

You can see at a glance how much cheaper you are compared to your local power company *1.

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J:COM電力に関するお問い合わせ

Contact us by phone (toll free)
0120-848-816 9:00-18:00 [Open all year round]

FAQ

What do I need when I apply?

The following information is required to apply. (Please have your electric bill (meter reading slip, etc.) handy.)

  • Switching company name: Name of retail electricity company under contract
  • Current contract type: contract type/plan name in use
  • Subscriber name
  • Switching operator customer number: Customer number of the retail electricity company you are contracted with
  • Supply point identification number: A number that identifies the electricity supply point (22 digits)

​Click here for information on how to check the number and contact information for each power company.

Is interior work required when switching to "J:COM Denki/ J:COM DENRYOKU"?

You can switch to "J:COM Denki/ J:COM DENRYOKU" without any interior work *1.

  • It may be necessary to replace the outdoor meter (watt-hour meter) (free of charge).

If you live outside the Hokkaido area and subscribe after April 4, 2024, you will be eligible for "J:COM Denki." If you subscribed before April 4, 2024, or if you live in the Hokkaido area, you will be subscribed to "J:COM Electric Power."

Can I get a contract unless it comes with cable TV?

Anyone who lives within the areas served by the following electric power companies can apply for an electricity-only contract.

  • Hokkaido Electric Power
  • Tohoku Electric Power
  • Tokyo Electric Power Company
  • Kansai Electric Power
  • Chugoku Electric Power
  • Kyushu Electric Power
Are there initial costs such as fees?

There are no initial costs such as fees or construction costs associated with subscribing to "J:COM Denki/ J:COM DENRYOKU."

If you live outside the Hokkaido area and subscribe after April 4, 2024, you will be eligible for "J:COM Denki." If you subscribed before April 4, 2024, or if you live in the Hokkaido area, you will be subscribed to "J:COM Electric Power."

Are there any restrictions on the contract period? Will I be charged a penalty for canceling the contract?

There are no restrictions on the contract period.
You can cancel at any time without penalty.

For customers with long-term contracts that include other J:COM services, individual contract terms will apply.

Is "J:COM Denki/ J:COM DENRYOKU" eligible for discounts under government subsidies?

"J:COM Denki/ J:COM DENRYOKU" is eligible for the government's "Electricity and Gas Price Sudden Change Mitigation Measures Project," "Emergency Support for Surviving Extreme Heat Waves," and "FY2024 Electricity and Gas Fee Burden Reduction Support Project."
The "Electricity and Gas Price Sudden Change Mitigation Measures Project" ended with a discount on your electricity bill for May 2024 usage (meter reading in June 2024, billing for July 2024), and the "Emergency Support to Survive the Extreme Heat" ended with a discount on your electricity bill for October 2024 usage (meter reading in November 2024, billing for December 2024). However, the "FY2024 Electricity and Gas Bill Burden Reduction Support Project" will apply discounts from January 2025 usage (meter reading in February 2025, billing for March 2025).
Learn more

If you live outside the Hokkaido area and subscribe after April 4, 2024, you will be eligible for "J:COM Denki." If you subscribed before April 4, 2024, or if you live in the Hokkaido area, you will be subscribed to "J:COM DENRYOKU."

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[Notes]
  • Former general electric utility company
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[About the amount including tax]

  • Consumption tax differences may occur due to changes in the consumption tax rounding method under the invoice system.