Mitsubishi Kakoki and Kawasaki City Sign Collaboration Agreement for Realizing a Circular Society

Mitsubishi Kakoki Co., Ltd. (President and CEO: Rikiichi Tanaka, hereinafter "Mitsubishi Kakoki") and Kawasaki City (Mayor: Norihiko Fukuda) signed the "Collaboration Agreement on Realizing a Circular Society in Kawasaki City" on June 15, aiming to promote and develop circular economy industries in Kawasaki City, enhance urban image through resource and energy circulation, and foster civic pride.

This agreement aims to achieve Kawasaki City’s “Kawasaki Carbon Zero Challenge 2050”※1 and Mitsubishi Kakoki’s “Mitsubishi Kakoki Group 2050 Management Vision”※2, ultimately working toward a circular society. It leverages Mitsubishi Kakoki’s expertise and technologies in environmental solutions and energy creation, alongside Kawasaki City’s facilities and infrastructure, through the following initiatives:

## Content of the Collaboration Agreement

- Resource recovery of unused materials and by-products generated from business activities within Kawasaki City
- Utilization of the above-mentioned resources within Kawasaki City
- Development of original branded products using local resources
- Exchange and cultivation of human capital and knowledge, as well as information and technology
- Other initiatives necessary for promoting circular economy industries, advancing resource and energy circulation, enhancing urban image, and fostering civic pride

## Supplementary Information

※1 “Kawasaki Carbon Zero Challenge 2050”

An initiative led by Kawasaki City in collaboration with citizens and businesses to achieve net-zero greenhouse gas emissions (a decarbonized society) by 2050.

https://www.city.kawasaki.jp/300/page/0000121670.html

※2 “Mitsubishi Kakoki Group 2050 Management Vision”

Mitsubishi Kakoki’s long-term vision for 2050, aiming to contribute to a sustainable society through innovations in hydrogen technology and the development of environmental infrastructure to realize a decarbonized society.

https://www.kakoki.co.jp/ir/vision.html

## Reference: Recent Initiatives by Mitsubishi Kakoki in Kawasaki City

Mitsubishi Kakoki launched the "MKK Project" in July 2025, leveraging its own and partner companies’ and organizations’ environmental and energy-creation technologies to create Kawasaki-originated solutions and businesses that address social challenges.

Since then, it has collaborated with Kawasaki City and local enterprises to conduct demonstration experiments and build model cases for decarbonized products, services, and businesses within the city, aiming to create new decarbonized business models originating from Kawasaki.

## Demonstration of Clean Energy from Hydrogen and Supply Chain Development

A demonstration project for a hydrogen storage alloy and fuel cell integrated system has begun at Kawasaki Bunka Park in Sai-ku, Kawasaki City.

The project aims to:

- Develop lifecycle CO2 reduction models through hydrogen utilization
- Establish a model for supplying hydrogen-derived energy to the new Kawasaki Arena
- Improve social acceptance of hydrogen
- Evaluate the durability of hydrogen systems

The initiative aims to localize hydrogen energy production and consumption by delivering hydrogen produced within Kawasaki City for use in lighting and events.

## Development of Decarbonized Collaborative Products Toward a Regional Circular Model

The company is advancing the demonstration of a “regional circular model” based on the utilization of industrial waste and developing branded products from this model.

It is redefining industrial waste, including food waste, as local resources and verifying circular models that generate economic value.

- Rebranding local Kawasaki products and services through decarbonization
- Composting waste, cultivating crops, and developing local branded products
- Creating regional employment models through these initiatives

This initiative aims to deepen public understanding of decarbonization and establish a socially accepted circular economy through practical, community-rooted activities in collaboration with local partners in Kawasaki.

## About Mitsubishi Kakoki Co., Ltd. (TSE Prime: 6331, Kawasaki, Kanagawa)

The Mitsubishi Kakoki Group operates primarily in plant and environmental facility engineering and construction, manufacturing of various standalone machinery, and after-sales services. As an engineering company with manufacturing capabilities, it designs and constructs machinery and equipment for diverse industries including urban gas, hydrogen, petrochemicals, semiconductors, electronic materials, shipbuilding, pharmaceuticals, and water treatment, strongly supporting societal development.

The Mitsubishi Kakoki Group’s sales for fiscal year 2025 were 84.2 billion yen, with 1,017 employees (consolidated). For more details, visit the official website: https://www.kakoki.co.jp/