Natural Gas: Not as Green as We Thought?

Written by Jim DiPeso on Tuesday April 12, 2011

A new study suggests gas is worse for the climate than coal. It's a challenge for the industry and a chance to get ahead of the curve on environmental issues.

A forthcoming paper from Cornell University researchers suggests that gas is more of a bad actor in climate change than coal. The gas industry is not taking kindly to the suggestion.

It’s the latest PR challenge for the industry and one more reason why gas producers need to get ahead of the curve on environmental issues if gas is to fulfill its promise as a clean, secure energy source.

Gas, for decades the quiet little brother of oil and coal in the fossil fuel family, has come out from beneath its siblings’ shadows with a reputation as an environmentally friendlier, domestically abundant energy source that could serve as the foundation for America’s energy economy for decades to come.

Gas is feeling its oats. Thanks to expanding discoveries in deep shale formations, the industry is boasting that a century’s worth of clean burning fuel is available securely within U.S. borders. Take that, dirty coal! Take that, scheming OPEC oil barons!

Now, along comes the Cornell study, which suggests that shale gas production has a bigger carbon footprint than coal because of fugitive methane releases from production. Molecule for molecule, methane packs a bigger heat-trapping punch than carbon dioxide.

Whoa, Nellie, says the gas industry, pushing back with castigations of what industry spokesmen call errors of fact and methodology in the study.

This, along with continuing controversy over the feared impacts of hydraulic fracturing chemicals on drinking water aquifers and the divisions among townspeople that gas drilling has spawned in production areas, is keeping the gas industry’s PR mavens working overtime.

Time for the gas industry to do more than play defense in a battle of press releases.

First, the methane issue. Leaving aside the issue of whether the Cornell study has merit, there is no reason not to minimize fugitive methane emissions, if only to maximize product in the pipeline. As EPA’s deputy administrator testified today at a Senate Environment and Public Works Committee hearing, there are practical technologies available today to keep methane releases to a minimum, and many gas producers already employ them. Those that don’t ought to take a look.

Next, the water issue. The gas industry and its regulators at the state level argue that hydraulic fracturing, "fracking" for short, poses little danger to drinking water supplies. At today’s EPW hearing, Senator James Inhofe hoisted a chart showing more than a mile of solid rock separating Marcellus shale gas formations in the Northeast from aquifers that supply domestic water wells.

"The fluid migration can’t happen and it doesn’t happen," Inhofe declared. Perhaps he’s right. Still, worries about surface spills of fracking chemicals and handling of produced water drawn from gas wells should not receive a brush-off that sounds too much like "we’re the experts, you’re not, so keep quiet and go away." Intended or not, when such a high-horse message goes out, people worried about their drinking water are not inclined to keep quiet and go away.

The gas industry could do itself a favor by agreeing to full disclosure, well by well, of all fracking chemicals. Transparency helps build trust, and trust is a tool that is just as essential for the gas industry as drill bits and tubing tongs.

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