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# Why are Tokyo's CO2 emissions so low?

According to a graph in Nature, 3 Feb 2011, the per-capita emissions (CO2 equivalent) of Tokyo's inhabitants is 5 metric tonnes. That's around half the value for New York, Hamburg, Beijing, and a quarter that of Denver. How is Tokyo doing this?

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1.

Maybe this plan is being carried out?

Comment Source:Maybe [this plan](http://www.kankyo.metro.tokyo.jp/kouhou/english/pdf/TOKYO%20Climate%20Change%20Strategy%202007.6.1.pdf) is being carried out?
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2.

Thanks for the link. I think they must have started well before 2007, but that plan does show they've got the right attitude.

Comment Source:Thanks for the link. I think they must have started well before 2007, but that plan does show they've got the right attitude.
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3.
edited February 2011

Historically Japan has had an energy-conserving attitude (because "with virtually no natural resources to export they have to pay for any imports, including fuel, with work that adds-value") dating from the "energy crises" of the mid 70s. It wouldn't surprise me to find they were using significantly less per capita energy even before the time when thinking about CO2 became considered important.

Comment Source:Historically Japan has had an energy-conserving attitude (because "with virtually no natural resources to export they have to pay for any imports, including fuel, with work that adds-value") dating from the "energy crises" of the mid 70s. It wouldn't surprise me to find they were using significantly less per capita energy even before the time when thinking about CO2 became considered important.
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4.

The Japanese are also famous for having had a sustainable society in the Edo period (1603-1867).

Comment Source:The Japanese are also famous for having had a [sustainable society in the Edo period (1603-1867)](http://www.energybulletin.net/node/5140).