On Mon. July 21, the Proceedings of the National Academy of Sciences of the United States of America posted (ahead of print) an important research paper entitled: Harmonization of Initial Estimates of Shale Gas Life Cycle Greenhouse Gas Emissions for Electric Power Generation. The report includes the following conclusion:
After harmonization, we find that per unit electrical output, the central tendency of current estimates of GHG emissions from shale gas-generated electricity indicates life cycle emissions less than half those from coal and roughly equivalent to those from conventional natural gas.
To download the NAS paper: Click Here.