Tokyu Power Supply Launches 2026 Enrollment for 'Terumaru Denchi Project' – Free Home Battery Installation to Begin July 16, 2026

Tokyu Power Supply Co., Ltd. (Headquarters: Setagaya Ward, Tokyo; President and CEO: Kazuhide Mikoshi, hereinafter 'the Company') announces the official enrollment for the large-scale social implementation project 'Terumaru Denchi Project' (hereinafter 'the Project') beginning on Thursday, July 16, 2026.

Official Website for the 'Terumaru Denchi Project':

https://www.tokyu-ps.co.jp/campaign/1000battery/?code=AA

The Project is part of Tokyo Metropolitan Government’s 'Subsidy Program for Promoting Home Battery Adoption' and 'Home Aggregation Business Implementation Program,' aiming to socially implement home battery systems and establish a Demand Response (DR) environment through centralized remote control of charging and discharging to stabilize urban power supply. The Company will own and provide home battery systems free of charge to detached homes in Tokyo that do not have solar power generation systems installed.

While preliminary registration began on Thursday, June 18, 2026, the Company officially opens formal recruitment and application procedures today, Thursday, July 16, at 14:00.

Additionally, today the Company has signed a partnership agreement with Setagaya Ward, Tokyo, aiming to further promote renewable energy utilization through home battery systems and strengthen regional resilience during disasters. Under this agreement, the Company and Setagaya Ward will jointly promote awareness and outreach to Setagaya residents about the Terumaru Denchi Project and effective renewable energy use, advancing community-based carbon neutrality initiatives.

Moving forward, the Company will continue to contribute to solving social challenges while exploring models for a society in harmony with the environment, actively working toward achieving a carbon-neutral society.

※For details, please refer to the attached document.

[Attached Document]

2026 Enrollment for the 'Terumaru Denchi Project'

○ About the Terumaru Denchi Project

The Terumaru Denchi Project is an initiative by Tokyu Power Supply, a provider of home electricity services, utilizing Tokyo Metropolitan Government subsidies (Fiscal Year 2026 'Subsidy Program for Promoting Home Battery Adoption'). The Company owns the home battery systems and provides them free of charge to households.

Eligible households are detached homes in Tokyo without solar power generation systems. Professional supply-demand managers remotely control the batteries, charging during low-rate hours and discharging during peak-rate hours, enabling electricity cost savings without changing daily routines. In the event of power outages due to disasters, accidents, or power shortages, the system automatically switches to independent operation, allowing continuous power supply.

・For the 2026 project, the installed battery has been upgraded to a new model manufactured by OMRON Social Solutions Co., Ltd. (13.0kWh, single-function dedicated load type)※. Compared to last year’s model, volume is reduced by approximately 55% and installation area by approximately 45%, making it one of the most compact models in Japan and optimized for Tokyo’s housing conditions.

・For those who wish, a whole-house backup model capable of powering all circuits, including 200V, during outages is now available as a paid option.

※ For specifications of the new battery, please refer to the next page.

○ Enrollment Start Date and Time

Thursday, July 16, 2026 [14:00]

○ Application Method

Please apply via the official 'Terumaru Denchi Project' website:

https://www.tokyu-ps.co.jp/campaign/1000battery/?code=AA

○ Eligibility Requirements

・Residing in a detached home in Tokyo (excluding remote islands) without a solar power generation system installed

※ The property must meet installation conditions set by the Company, including building structure, equipment, and communication environment.

・Applicant must be 75 years old or younger at the time of application

・Residing in a detached home owned by the applicant, their spouse, or a relative within the second degree of kinship, and the building must have received building confirmation after June 1, 1981, or have seismic resistance equivalent to the new seismic standard due to retrofitting

・Willingness to enroll in Life Fit Plan B or C

・Agreement that electricity used for battery maintenance, operation, and charging will be borne by the customer

・Agreement to provide a stable internet environment (always connected via wireless LAN router; home or mobile routers excluded) free of charge to the service provider

・Consent to the Company applying for the Tokyo Metropolitan Government’s FY2026 Subsidy Program for Promoting Home Battery Adoption on the applicant’s behalf

・Agreement to allow the Company to remotely control the battery

・Willingness to cooperate with on-site surveys, installation work, and maintenance activities conducted by the service provider

・Agreement to the terms of the 'Free Battery Loan Agreement' and 'Reverse Power Purchase Agreement'

For further details and important notes, please visit the official 'Terumaru Denchi Project' website:

https://www.tokyu-ps.co.jp/campaign/1000battery/?code=AA

□ Glossary

▼ Tokyo Metropolitan Government 'Subsidy Program for Promoting Home Battery Adoption'

https://www.tokyo-co2down.jp/subsidy/family_tikudenchi/

A subsidy program that covers part of the cost when installing a battery system linked with solar power generation in homes within Tokyo. As part of the Tokyo Metropolitan Government’s 'Expansion of Insulated and Solar-Powered Homes Resilient to Disasters and Beneficial to Health' initiative, it aims to increase household energy self-sufficiency and strengthen disaster preparedness during power outages.

▼ Tokyo Metropolitan Government 'Home Aggregation Business Implementation Program'

https://www.tokyo-co2down.jp/subsidy/aggre_home/

A program that utilizes home-installed batteries and other devices to implement Demand Response (DR) via remote control, aiming to optimize electricity supply and demand and expand renewable energy use. By supporting both households and aggregators, it promotes the social implementation of distributed energy resources.

2026 Project Battery

<Product Appearance>

Key Features

Significantly reduced size enables flexible installation suited to users’ living environments

Compared to the 12.7kWh model used in the 2025 project, volume is reduced by approximately 55% and installation area by approximately 45%, achieving one of the smallest classes in Japan.

Suitable for both indoor and outdoor installation, allowing optimal deployment regardless of location and adapting to various living environments.

Maintains the sleek design of previous models, seamlessly blending into residential settings.

Main Specifications

Model

2025 Project Battery: KP-BU127-B

2026 Project Battery: KP-BU130C-A

Battery Capacity

12.7kWh (Effective Capacity: 11.4kWh)

13.0kWh (Effective Capacity: 11.6kWh)

Installation Environment

Outdoor only

Indoor/Outdoor

Operating Ambient Temperature

-10 to 45°C (no condensation or freezing)

-15 to 45°C (no condensation or freezing)

Dimensions (W × H × D)

681mm × 909mm × 3