"More than $240 million worth of natural gas leaks from the country's interstate pipeline network each year, according to new research led by Colorado State University.

Published yesterday in Environmental Science & Technology, the paper is part of an ongoing effort by the Environmental Defense Fund to study how much methane is bleeding out of the U.S. gas supply system. In the latest installment of its project, the research team found that natural gas infrastructure loses about 1,503 gigagrams of the potent greenhouse gas per year, compared to U.S. EPA's greenhouse gas inventory figure of 2,071 gigagrams annually.

The study suggests a small group of 'super-emitters' could be responsible for up to 40 percent of those emissions."

Pamela King reports for EnergyWire July 22, 2015. [2]