情報化技術(IT)の導入による電力消費量およびCO_2排出量の削減効果 : インターネットを利用した音楽配信と既存のCDを媒体とした音楽配信の比較評価ケーススタディ

概要

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Electricity consumption in the Internet, electronic network, in Japan was calculated with statistics for 1998. Methodologies to allocate the electricity consumption to each service provided by Internet were proposed. Then, electricity consumption and CO_2 emissions associated with downloading 1 CD of music by Internet, especially, using dialup, were investigated. In addition, CO_2 emissions associated with distributing 1 CD of music by ordinal compact disc were investigated and compared with those by Internet. CO_2 emissions for downloading 1 CD of music by Internet were dependent on transmission speed, 0.79 kg-CO_2 if the communication speed is 64 kbps (actual throughput: 51 kbps), and 0.16 kg-CO_2 if the communication speed is 1.5 Mbps (actual throughput: 1.2 Mbps). On the other hand, it was calculated that CO_2 emissions for distributing 1 CD of music by ordinal compact disc was 0.33 kg-CO_2. CO_2 emissions for downloading 1 CD of music by Internet will be reduced further with the increase in transmission speed.
一般社団法人日本エネルギー学会の論文
2003-01-20