Based on a comparison of 128 countries in 2011, China ranked the highest in CO2 emissions from electricity and heat production with 4,266 Mt followed by USA and Russia. On the other end of the scale was Nepal with 0.010 Mt, Dem. Republic of the Congo with 0.030 Mt and Togo with 0.030 Mt.
Total CO2 emissions from electricity and heat production reached 14,705 Mt in 2011 in the World according to World Bank / EIA. This is 3.83 % more than in the previous year and 27.7 % more than 10 years ago.
Historically, total CO2 emissions from electricity and heat production reached an all time high of 14,705 Mt in 2011 and an all time low of 8,608 Mt in 1990. The average annual growth amounted to 2.58 % since 1960.
The top ranked country, China, accounted for 29.0 % of CO2 emissions from electricity and heat production in the world. The top 3 countries hold a 52.7 % share while the ten largest countries some 74.8 % in 2011.
Data for more countries are available at CO2 Emissions from Electricity and Heat Production indicator page.