"A new paper by Daniel Raimi, a senior research associate with the economic think tank Resources for the Future, looks at the greenhouse gas emissions implications of the shale oil and gas boom through an economic lens, untangling the threads of emissions from production versus use. It also examines domestic versus overseas use and considers methane and carbon dioxide emissions.
. . .
'While low-cost gas will continue to reduce CO2 emissions by displacing coal, these reductions are more than offset by numerous factors, including slowed deployment of renewables and earlier retirement of nuclear power plants,' Raimi found."