Comparative Summary of Food Waste Recycling in Tokyo - 2002 and 2022
In 2002, Tokyo generated approximately 19 million tons of food waste annually. Recycling rates were low, with most being incinerated or disposed of in landfills. Recycling facilities in Koto-ku and elsewhere were limited and technologically less advanced; by 2022, food waste had decreased to about 5.5 million tons and recycling technology had advanced. A recycling plant in Koto-ku produces biogas through methane fermentation of 120,000 tons of waste per year to supply electricity to public facilities. Major companies such as 7-Eleven and FamilyMart are promoting projects to reuse waste food as feed and fertilizer in an effort to improve recycling rates. However, the cost of waste disposal, at approximately 50,000 yen per ton, remains high, making cost reduction a challenge.
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