By David Lyon and Adam Peltz
There are at more than 1.5 million inactive oil and gas wells in the U.S. that remain uncapped and, in some cases, unsafe. Some are temporarily dormant, while others are fully depleted but not yet properly sealed, continuing to emit residual pollution from the days when they were active. Many are what the industry calls “orphans,” with no financially solvent owner in sight to take the responsibility for them. Long seen as a water protection issue, a new study in the journal Geophysical Research Letters now shows that properly plugging unused wells can also reduce emissions of the potent greenhouse gas methane.
The study looks at orphaned and plugged wells in four oil and gas producing regions of the country – Colorado’s Denver-Julesburg Basin; Ohio’s Appalachian Basin; Wyoming’s Powder River Basin; and Utah’s Uinta Basin. It is part of a series of 16 major studies organized by Environmental Defense Fund to better understand the scale and scope of oil and gas methane emissions. Read More
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Each month, the Energy Exchange rounds up a list of top clean energy conferences around the country. Our list includes conferences at which experts from the EDF Clean Energy Program will be speaking, plus additional events that we think our readers may benefit from marking on their calendars.
By Lisa Albrecht, renewable energy specialist with 
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