US National Renewable Energy Laboratory, Life-cycle analysis harmonization, results and findingsArchived 2017-05-06 at the Wayback Machine, NREL estimates life-cycle greenhouse gas emissions cor coal-fired electricity to be 979 grams CO2 equivalent per kWhr, compared to 450 grams for electricity from conventional gas, and 465 grams for electricity fueled by gas from massive hydraulic fractured gas wells.
Lori E Apodaca, Sulfur, US Geological Survey, Minerals Yearbook, 2013.
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US National Renewable Energy Laboratory, Life-cycle analysis harmonization, results and findingsArchived 2017-05-06 at the Wayback Machine, NREL estimates life-cycle greenhouse gas emissions cor coal-fired electricity to be 979 grams CO2 equivalent per kWhr, compared to 450 grams for electricity from conventional gas, and 465 grams for electricity fueled by gas from massive hydraulic fractured gas wells.