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2 Environmental Initiatives

Indicators and Initiatives Supporting Environmental Performance

To improve our environmental performance, we are promoting efforts in both design and asset management, as well as establishing indicators that complement these efforts.

Design: Vernacular Approach

HRR incorporates a vernacular approach as a design concept to reduce environmental impact and streamline operations in accordance with the location and natural environment of each property.

HOSHINOYA Karuizawa - An energy system that harnesses the valley’s terrain, river, hot springs,and geothermal heat

We use a unique EIMY ecosystem in order to reduce the burden on nature, utilizing hydroelectric power, underground heat, and recycling using biomass.
From an architectural aspect, sustainable resort operations are promoted through features such as a “furo,” a small roof that uses natural cool air, and a design that considers biodiversity.

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Natural energy utilization at HOSHINOYA
Karuizawa: ”EIMY (Energy in my yard)

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OMO7 Osaka-Protecting against solar heat through passive environmental control inspired by wisdom from traditional craftsmanship

Examples of effect analyses for each technology (Note 2)
Examples of effect analyses for each technology

By enveloping the building with an exterior membrane, the material functions like a bamboo screen, blocking direct sunlight from hitting the concrete structure. The plan aims to reduce sunlight entering through the windows by 30 to 45%.

Examples of effect analyses for each technology

At the “Miya-green” green square, an azumaya (pavilion) is installed and the area is landscaped with about 200 trees and roughly 1,700 m² of lawn, helping to mitigate the heat-island effect.

  • The “Cross-sectional composition diagram” is a conceptual illustration designed to clearly explain the environmentally friendly structure of the property, and it does not guarantee or promise that the environmental control shown in the diagram can be achieved.
  • Results of effect analyses in the “Examples of effect analyses for each technology ” are based on the Report on Environmental Simulation Verification prepared by NIHON SEKKEI, INC., and do not guarantee or promise the actual effects of the property.

Asset Management: 3R Efforts

To optimize resource use, we are promoting efforts from the perspective of the 3Rs (Reduce, Reuse, Recycle).

Efforts Adopted Properties
Adoption of pump bottles 67/70 properties
Reduction of amenities 67/70 properties
No PET bottles 62/70 properties

Number of properties as of April 30, 2025

Asset Management: Measures to Counter Food Loss

Some hotels have introduced the “WINNOW” food loss reduction tool to optimize the amount of food served and reduce leftovers according to guest numbers.