Environment
Social
Governance
February 12, 2025
News Release
(headquartered in Chiyoda-ku, Tokyo; Yasuzumi Tanji, President & CEO; hereinafter referred to as "the Company"), whose mission is "to make decarbonization less of an intractable problem," announces that, based on the partnership agreement (*1) signed in October 2024 with the City of Yokohama (Mayor: Takeharu Yamanaka), the Company will launch a project to supply condominiums in Yokohama City with electricity generated from 100% real renewable energy sources ("Renewable Energy") 100% power supply project (the "Project") to condominiums in Yokohama City.
This project will be implemented for one condominium in the city that has already installed our bulk power receiving service, with the aim of creating a model case of "renewable energy supply to condominiums in the city by a private company utilizing the bulk power receiving system" and is expected to reduce CO2 emissions by approximately 1,000 t-CO CO2(*2) per year. Through this project, MHI and the City of Yokohama will conduct educational activities to raise residents' awareness of the need for decarbonization and conduct research on behavioral changes, which will be used to design a beneficial system to achieve carbon neutrality in Yokohama City.

About the Collaboration Agreement between Minebea and the City of Yokohama
In July 2024, MHI established the Decarbon Solution Business Division to support companies and local governments across Japan that are working to decarbonize their operations, and is leveraging the know-how and assets it has accumulated over the years to encourage decarbonization. We have been in discussions with various local governments on collaborative agreements with local governments, as this is an effective framework to promote these moves in a more agile manner.
The partnership agreement with the City of Yokohama aims to help the city achieve its goals of reducing greenhouse gas emissions by 501 TP3T by FY2030 and achieving carbon neutrality by 2050 by contributing to the reduction of emissions from the residential sector, which accounts for approximately 30% of the city's CO2 emissions.
■"Re-energy supply to housing complexes utilizing the bulk power receiving system
Generally, in housing complexes, each resident household contracts with an electric power company of its choice to receive its own power supply. In common areas, the management association (or the property owner in the case of rental properties) contracts with an electric power company to supply electricity. Under this system, in order to expand the introduction of renewable energy, it is necessary for all households and the management association to contract for the supply of renewable energy on their own initiative, and in many cases, the price of electricity tends to increase when switching to renewable energy. This has limited the approaches taken by municipalities and other stakeholders aiming to reduce emissions from the residential sector.
In the model of "renewable energy supply utilizing the bulk power receiving system," we are providing a bulk power receiving service in the target condominiums and concluding power supply contracts with all households and the management association. Since the same company supplies electricity to the entire building, including both private and common areas, it is possible to realize the introduction of renewable energy for the entire building. Since approximately 60% of the households in Yokohama City live in housing complexes (*3), this model, which allows decarbonization of housing complexes on a building-by-building basis, is expected to effectively promote emission reductions from the residential sector.
As a demonstration project, this project will maintain the benefit of lower electricity rates through bulk power supply while providing supply without shifting additional costs, such as the cost of acquiring non-fossil certificates required to convert to real renewable energy, to electricity rates.

Future collaboration with ◾ targeted condominiums
The condominium where this project will be implemented, "The Park House Yokohama Shinkoyasu Garden (*4)", has been certified under Yokohama City's "Yokohama Disaster Prevention Capability Improvement Condominium Certification System (*5)". Under this system, Yokohama City certifies condominiums that have implemented disaster prevention measures in order to promote the creation of disaster-resistant condominiums and improve the disaster preparedness of the surrounding community as well. The condominiums that have been certified have formed a disaster prevention organization under the management association and conduct regular disaster prevention drills, and their proactive efforts on the software side have been highly evaluated, with a view to enhancing their resilience on the hardware side in the future.
In addition to supplying renewable energy to all condominium units through our bulk power receiving service, we also provide a "condominium disaster prevention service" that combines solar power generation equipment and storage batteries to achieve even more effective energy use and power supply functions in the event of a disaster. In discussions with the target condominiums in preparation for the implementation of this project, some expressed their expectations for this service, which will strengthen hardware resilience and decarbonization in one fell swoop. We plan to use this project as an opportunity to develop measures to further raise residents' awareness of the need to decarbonize their homes, and will continue discussions, including supporting consideration of switching from the existing bulk power supply service to the "Condominium Disaster Prevention Service".
The president of the condominium's board of directors made the following comments
We believe that our participation in the 100% Renewable Energy Supply Project will increase the opportunities for residents to feel that they are contributing to a sustainable society. We also hope that such increased opportunities will not only lead to greater awareness of energy conservation and behavioral change, but also to more opportunities for families and local communities, including children, to think about environmental issues and social sustainability."

◾️ Comment by Ms. Kumi Ametsutsumi, Director, De-carbon Lifestyle Promotion Section, De-carbon Lifestyle Promotion Department, De-carbon Society Transition Promotion Bureau, City of Yokohama, Japan
The estimated CO2 emissions reductions achieved through the "whole condominium renewable electricity supply project," which was undertaken with the cooperation of Resil Corporation and condominium residents, is approximately 1,000 tons per year, an extremely high reduction effect, and we are once again feeling the significance of the effect.
If the introduction of renewable electricity in collective housing, which accounts for approximately 60% of the city's housing units, progresses, it is expected to make a significant contribution to the realization of a half-carbon society by 2030 and a decarbonized society by 2050.
In addition, if solar power generation equipment and storage batteries are installed in conjunction with bulk power reception, it will function as a measure to secure power sources in the event of a disaster, leading to the safety and security of all residents.
Based on the efforts in this model case, we would like to promote bulk power receiving, which contributes to decarbonization and disaster preparedness, in cooperation with Resil Corporation.
◾️ Hiroki Ueno, Executive Officer, General Manager, De-Carbon Solution Business Division, Resil Corporation Comments
Through a partnership agreement with the City of Yokohama and with the cooperation of condominium residents, we are pleased to introduce a model case that embodies our desire to "make decarbonization not a difficult problem" in Yokohama City.
This project will start as a system that allows residents to naturally contribute to the environment in their daily lives, without requiring special capital investment or major lifestyle changes. At the same time, we have received positive feedback from the management association regarding the installation of photovoltaic power generation equipment and storage batteries, and we will continue to take on the challenge of creating condominiums that are disaster-resistant and have the ability to prevent disasters.
Starting with this innovative initiative with the City of Yokohama, we will continue to collaborate with other municipalities to contribute to the creation of a sustainable decarbonized society. We hope you will continue to look forward to our projects, which approach the realization of a decarbonized society from both technology and people's awareness.
*1: Conclusion of a collaboration agreement between the Company and the City of Yokohamahttps://rezil.co.jp/news_release/2153/
*2: Calculated based on the annual electricity consumption in the condominiums where this project will be implemented in 2023 (approximately 2.25 million kWh) and the emission factor for the electricity supplied by our bulk power supply service for condominiums in 2023.
3: Source: "Yokohama City Statistical Book, Chapter 10, Buildings and Houses," 2023.
https://www.city.yokohama.lg.jp/city-info/yokohamashi/tokei-chosa/portal/tokeisho/10.html
4: Total 499 units, 10 floors above ground and 1 basement floor
5: About the Yokohama Disaster Prevention Capability Improvement Condominium Certification System
https://www.city.yokohama.lg.jp/kurashi/sumai-kurashi/jutaku/sien/bousaimansion.html
Contact ◾Decarbon Solution Business Unit
De-Carbon Solution Business Division, Resil Corporation Contact: Ueno, Sugawara
TEL:03-6846-0900 MAIL:ds_all@rezil.co.jp
Press Inquiries
Public Relations Team, Rezil Corporation Attn: Hoshi, Shinkai
TEL:03-6846-0908 MAIL:koho@rezil.co.jp