Japan First: Utilizing Multiple EV Charging Sites for Demand Adjustment Market Participation

MC Retail Energy Co., Ltd. (Chiyoda-ku, Tokyo, President and Representative Director: Takayuki Araki) will begin trading in the demand adjustment market*1 using EV charging as a resource from April 2026. This initiative marks the first time in Japan*2 to provide adjustment capacity generated by controlling the charging of EV vehicles located at multiple sites. Furthermore, this initiative is the first in Japan*2 to enter the demand adjustment market using a Negawatt-Posi-watt list pattern*3, which includes EVs. We will sequentially expand this initiative nationwide, contributing to both decarbonization and stable electricity supply.

• *1 A market for buying and selling the adjustment capacity (power sources or demand suppression for demand adjustment) necessary for frequency control and balancing of electricity supply and demand in the power grid.

• *2 According to our research.

• *3 In the demand adjustment market, a management method for resources that combines Negawatts (demand suppression) and Posi-watts (supplying reverse power flow by utilizing surplus capacity).

Bundling EV Resources at Multiple Locations into a Single Adjustment Capacity for Market Supply

In Japan's electricity market, the importance of adjustment capacity is increasing to maintain supply-demand balance as renewable energy adoption progresses.
As an aggregation coordinator that bundles EV resources and generator resources for operation under the Negawatt-Posi-watt list pattern, we will supply resources obtained by GO Inc. (Minato-ku, Tokyo, President and Representative Director: Hiroshi Nakajima) through remote group control of EV chargers at multiple locations to the demand adjustment market. We will control the charging volume of EV vehicles connected to over 230 chargers*4 at times when the stability of electricity supply may be compromised, bundling them with other resources to supply as a single adjustment capacity. The supplied adjustment capacity will be used by transmission and distribution operators for the stable supply of electricity to the domestic power grid.

• *4 As of the start date. Expansion is planned sequentially.

Operating in the Demand Adjustment Market Leveraging Expertise in EV Charging Control

Leveraging our extensive knowledge in EV charging control, we are strengthening our operations in the demand adjustment market. Since entering the demand adjustment market for the first time as a new power retailer in 2019, we have achieved resource management using the Negawatt-Posi-watt list pattern, which combines Negawatts (demand suppression) and Posi-watts (supplying reverse power flow by utilizing surplus capacity) through operations with diverse resources. This contributes to ensuring the stability of electricity supply. Furthermore, we supply virtually 100% renewable energy to numerous EV chargers, further strengthening our expertise in the demand adjustment market and contributing to the promotion of sustainable energy use.

About MC Retail Energy Co., Ltd.

MC Retail Energy Co., Ltd. has been engaged in the electricity retail business since April 2016, when the full liberalization of electricity retail began. We have been steadily advancing innovative businesses such as EV-related services and electricity supply combined with storage batteries. With the corporate philosophy of "Turning what electricity couldn't do into what it can do," we aim for further leaps as a company creating a new era of energy.

• Company Name: MC Retail Energy Co., Ltd.

• Location: 6F, New International Building, 3-4-1 Marunouchi, Chiyoda-ku, Tokyo, 100-0005

• Established: November 2015

• Representative: Takayuki Araki, President and Representative Director

• Business Activities: Electricity retail business including renewable energy supply, electric vehicle charging and discharging business, electricity supply and demand adjustment business utilizing storage batteries and other power sources.

• MC Retail Energy Official Website