China would try to cut pollution from coal-fired power plants by 60% by 2020, reducing CO2 emissions by 180M metric tons

this is about 2% of world emissions
2020-01-04:

China is set to add new coal-fired power plants equivalent to the EU’s entire capacity, as the world’s biggest energy consumer ignores global pressure to rein in CO2 emissions in its bid to boost a slowing economy. While the rest of the world has been largely reducing coal-powered capacity over the past 2 years, China is building so much coal power that it more than offsets the decline elsewhere

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