Carbon Dioxide Emissions by Source, 2015
Coal
1350.5 million metric tons (MMT) of CO
2
Natural gas
526.1 MMT
Petroleum
23.7 MMT
Incineration
of waste
10.7 MMT
Other
carbonates*
5.6 MMT
Geothermal
energy
0.4 MMT
*Other equipment involved in electricity generation