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Key Theme 1: Environment

Reducing Waste and Increasing Recycling Rate

Initiatives at Mitsubishi Estate Headquarters

Under "Environment," one of the key themes in Mitsubishi Estate Group 2030 Goals for the SDGs, the Mitsubishi Estate Group has set targets of 90% for waste recycling and a 20% reduction in waste disposal (compared to FY2019, per m²). The Group is also aiming to recycle 100% of waste in the Marunouchi area (Otemachi, Marunouchi, and Yurakucho).

To meet these targets, in addition to introducing innovative technologies and revising methods of waste disposal, it is important for each and every one of us to make a conscious effort to reduce and sort waste, ensure appropriate recycling, and improve the recycling rate for resources. Japan's Basic Act on Establishing a Sound Material-Cycle Society stipulates a user-responsibility approach under which the waste generator bears responsibility for reduction, reuse, and recycle (3Rs). The Mitsubishi Estate Group is committed to collaborating with stakeholder tenants on 3R initiatives in order to work together to pass on a better society to the next generation.

Since February 2021, Mitsubishi Estate has been implementing an initiative to sort waste into 15 categories at its headquarters. In asking tenants to strengthen the sorting of waste, we worked with a manufacturer of fixtures to design and introduce a trash station that can hold 15 separate bins. The specifications will allow the bins to be integrated into a cabinet and, for hygiene considerations, there will be no flaps on the bin openings.

Examples of initiatives aimed at strengthening sorting of waste at Mitsubishi Estate headquarters

  • Creating an environment that facilitates sorting of recyclable waste:
    As most of the waste disposed of as combustibles is actually recyclable, trash stations that allow waste to be sorted into 15 separate bins have been provided in place of trash bins that were dedicated solely for combustibles.
  • Promoting recycling of mixed paper:
    Mixed paper that is not soiled or specially processed, such as envelopes and paper bags, can be recycled into toilet paper, and better sorting is effective for reducing combustible waste in offices. At the trash stations, mixed paper bins have been installed next to the combustible bins to make sorting easy.
  • Promoting recycling by sorting PET bottles into three separate bins:
    Empty PET bottles are sorted into the PET bottle bin, the caps go into a dedicated container, and the labels go into the waste plastic bin.
  • Establishing strict rules for sorting and disposing of lunchbox waste:
    The rules for sorting and disposing of waste in shared office kitchens have been enforced. Empty plastic lunchbox containers go into the waste plastic bin, leftovers go into the food waste bin, and disposable chopsticks and paper napkins go into the combustible bin. Leftover drinks and ice are disposed of in the sink.

See the following for the list of the 15 waste categories. (Sustainability Guide Vol.2)

Waste Separation at a Glance (PDF 1.28MB)PDF

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Initiatives in Collaboration with Tenants

Under "Environment," one of the key themes in Mitsubishi Estate Group 2030 Goals for the SDGs, the Mitsubishi Estate Group has set targets for waste recycling and reduction in waste disposal. The Group is also aiming to recycle 100% of its waste in the Marunouchi area (Otemachi, Marunouchi, and Yurakucho).

To meet these targets, in addition to the Mitsubishi Estate Group, the cooperation of tenants and other stakeholders is essential. Therefore, we began weighing the waste of each retail tenant in the Marunouchi Building in fiscal 2020. We are working with tenants to ensure thorough sorting of waste by assigning staff to support sorting, preparing manuals and videos, and raising awareness. As a result, the amount of kitchen and miscellaneous waste for incineration decreased, and the recycling rate for food waste increased 4.5% (compared to October – December, 2019).

Going forward, we will create a better society by striving to increase the recycling rate and reduce the volume of waste disposal with the understanding and cooperation of tenants to achieve a sound material-cycle society.

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