Frequently Asked Questions How much carbon dioxide is produced per kilowatthour when generating electricity with fossil fuels? You can calculate the amount of carbon dioxide (CO2) produced per kilowatthour (kWh) for specific fuels and specific types of generators by multiplying the CO2 emissions factor for the fuel (in pounds of CO2 per million Btu) by the heat rate of a generator (in Btu per kWh generated), and dividing the result by 1,000,000. Below are the number of pounds of CO2 produced by a steam-electric generator for different fuels using the above formula and the average heat rates for steam-electric generators in 2012 for calculating the amount of CO2 produced per kWh: Lbs of CO2 per Million Btu Fuel Lbs CO2 per kWh Heat Rate (Btu per kWh) Coal Bituminous 205.300 10,107 2.08 Sub-bituminous 212.700 10,107 2.16 Lignite 215.400 10,107 2.18 Natural gas 117.080 10,416 1.22 Distillate Oil (No. 2) 161.386 10,416 1.68 Residual Oil (No. 6) 173.906 10,416 1.81 Last updated: April 17, 2014 Other FAQs about Environment Does EIA have projections for energy production, consumption, and prices for individual states? Does EIA report water vapor emissions data? How do I convert between short tons and metric tons? How does the hole in the ozone layer affect global warming? How much carbon dioxide is produced by burning gasoline and diesel fuel? How much carbon dioxide is produced per kilowatthour when generating electricity with fossil fuels? How much carbon dioxide is produced when different fuels are burned? Why do carbon dioxide emissions weigh more than the original fuel? How much of U.S. carbon dioxide emissions are associated with electricity generation? What are greenhouse gases and how do they affect the climate? What are the energy-related carbon dioxide (CO2) emissions by source and sector for the United States? What are the greenhouse gas and air pollutant emissions factors for fuels and electricity? What are the sources of energy-related carbon dioxide emissions by type of fuel for the United States and the world?