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Resource Index Data Collection Methods and Rationale

(Updated on August 24, 2012)

The resource index is calculated as follows.

Resource index
[(1) Waste landfilled from sites - (2) Waste reused/recycled from sites] + [(3) Product resource input - (4) Volume of reused/recycled materials - (5) Volume of resource recovery from end-of-life products]

(1) Waste landfilled from sites

Total weight of wastes generated at Sony sites.


(2) Waste reused/recycled from sites

Volume of reused/recycled waste from sites


(3) Product resource input

Total volume of resources used in products, accessories, manuals and packaging materials. Total weight of products shipped is used as a substitute.


(4) Volume of reused/recycled materials

Total volume of recycled/reused materials and vegetable-based plastics used for products, accessories, manuals and packaging


(5) Resource recovery from end-of-life products

Resource recovery from end-of-life products is calculated as the weight of products collected from recycling multiplied by the reused/recycled ratio.

The volume of products collected from recycling is the total volume of cardboard in all areas and packaging containers in Japan that Sony is obliged to collect and recycle as a percentage of the total volume of recycled packaging materials resulting from logistics in Japan, Europe, the United States and South Korea.
Some amounts calculated based on the recycling expenses are included.
The reused/recycled ratio is the volume used/recycled compared with the total volume collected. The amount of collected end-of-life products is substituted under the current situation.





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