CIRCULAR YOKOHAMA

Accelerate Yokohama's circular economy

What is Circular Yokohama?

Circular Yokohama is a platform to accelerate the circular economy in the city of Yokohama. We post the latest news regarding Yokohama’s circular economy, create a “circular map” that lists circular projects around the city, and develop a database for each project. On this platform, you can also find our local circular economy tours and experiences you can join. We closely work with the city, local SMEs, and NPOs under a comprehensive partnership agreement to promote the circular economy in the city.

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URL：https://circular.yokohama/

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LATEST

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[Circular Yokohama] Received the second Kanagawa Decarbonization Award

  • On Feb 24, 2026
Circular Yokohama, a platform operated by Harch to promote the circular economy in Yokohama, received the Dissemination and Promotion Division award at the Second Kanagawa Decarbonization Award organized by Kanagawa Prefecture. What is the Kanagawa Decarbonization Award In order to achieve a decarbonized society by 2050, this award system honors individuals, businesses, schools, and other […]
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[Circular Yokohama] Event Report | YOKOHAMA CIRCULAR FASHION GATHERING: Envisioning the future of textile circulation across industries

  • On Dec 9, 2025
In Yokohama City, various initiatives are being promoted to advance resource circulation and build a circular society. As part of these efforts, Harch is collaborating with the City of Yokohama on a three-year project titled “Yokohama Low-Carbon Clothing Lifestyle Initiative,” which focuses on the circulation of clothing, an essential part of citizens’ daily lives. As […]
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[Circular Yokohama] Event Report | Sustainable Micro-tourism: A one-day tour of sustainability initiatives in Yokohama

  • On Sep 19, 2025
Circular Yokohama, operated by Harch, promotes circular lifestyles in Yokohama. On February 8, 2025, it hosted the program “Sustainable Micro-tourism: A one-day tour of sustainability initiatives in Yokohama,” designed to provide insights for sustainability management, business development, and operations. * This article is a republished report from Circular Yokohama titled “[Event Report] Yokohama Sustainable Microtourism […]
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TEAM

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Yu Kato
CEO (Chief Executive Officer)

Founded Harch in 2015. Leads initiatives in sustainability, circular economy, design, media, digital, culture, arts, and education.

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Rina Muroi
Circular Yokohama Manager

Born in Yokohama, lived in U.S. Leverages her bilingual communication skills and local networks to connect communities and the world.

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Momoka Maruyama
Circular Yokohama Editor

With experience at a Danish folk high school and knowledge in psychology, she aspires to contribute to a society of mutual support.

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Takahiro Amano
COO (Chief Operating Officer)

After working at Mizuho Bank and launching and selling a startup, he now specializes in AI, media, and impact investing.