Natural gas: A worse greenhouse gas than it's made out to be, says ProPublica
1/27/11 - 2:54 pm
ProPublica, whose reporter Abrahm Lustgarten is currently one of the most prominent critics of hydrofracking in the media, published a long piece yesterday that casts doubt on the purported climate benefits of natural gas. An excerpt:
Advocates for natural gas routinely assert that it produces 50 percent less greenhouse gases than coal and is a significant step toward a greener energy future. But those assumptions are based on emissions from the tailpipe or smokestack and don’t account for the methane and other pollution emitted when gas is extracted and piped to power plants and other customers.
The EPA’s new analysis doubles its previous estimates for the amount of methane gas that leaks from loose pipe fittings and is vented from gas wells, drastically changing the picture of the nation’s emissions that the agency painted as recently as April. Calculations for some gas-field emissions jumped by several hundred percent. Methane levels from the hydraulic fracturing of shale gas were 9,000 times higher than previously reported.
In addition to new studies from the EPA, Lustgarten's story leans on Cornell professor Robert Howarth, who is currently engaged in an ongoing reserach project to measure emissions from various fossil fuels over their entire lifecycle (meaning, not just the emissions you get from burning the fuel, but also those involved with extraction, transport, etc.).
Based on his research (which, he notes, is still a work in progress), Howarth believes the greenhouse gas emissions associated with natural gas have been vastly underestimated, and that natural gas is potentially on a par with coal in terms of climate impacts. We spoke with Howarth last spring, when he released a preliminary paper on his findings. Here's an excerpt:
WP: You set out to compare the carbon emissions of natural gas to coal and oil. What did you find?
RH: If you look at the Department of Energy's analyses of greenhouse gas emissions from those three fuels, they will say gas is the cleanest and coal is the dirtiest. But that's based on the emissions just from combustion. Energy for digging the pipeline, laying the pipe, trucking the water, hydraulic fracturing, dealing with the waste—those all emit greenhouse gases.
But most important is the release of methane gas. It's hard not to have a little bit of gas leakage when you move stuff over a long distance via a pipeline. The EPA's most recent estimate is 1.5 percent leakage. That's a conservative estimate. We're working on coming up with a better number—and it's going to be higher, frankly.
Reacting to the ProPublica piece in the New York Times's Dot Earth blog yesterday, Andrew Revkin -- a well-known and widely-read environmental and climate reporter -- argues that methane leaks or no, natural gas is still a less risky fuel than coal, and needs to be part of our national energy strategy.
I agree with Christopher Helman over at Forbes who recently wrote that low gas prices mean there’s little to lose by holding up drilling in highly contested areas (the Marcellus Shale here in New York being the prime battle zone) while the E.P.A. review is completed.
But campaigners who fight natural gas altogether, like anyone else immersed in the struggle over an energy policy that works for the long haul, would do well to come up with a real-world game plan for supply sufficient energy to foster human progress while limiting environmental risks.
Photo of Marcellus rig in Lycoming County, PA. From Wikimedia Commons.
|Eight Track Shindig for Film Festival|
|SPRING IS ARRIVING AT THE BLUE BARN|
|Lyon Mountain Blue Barn Antiques & Collectibles Highest Quality -- Best Prices|
|Lyon Mountain Blue Barn Antiques and Collectibles Highest Quality - Best Prices|
|COMMERCIAL PROPERTY FOR SALE OR RENT|
|Come join our largest street fair of the season on Saturday May 24th|
|Used kayak sale this weekend|
|Product Protection Plans are now available at The Catalog Outlet!|
|New Reclining Living Room Collection Sale Priced, Only While Supplies Last!|
|Wednesday Night’s Show: Catskills Trees with Gary Mead – Eastern Hemlock|
|Wednesday Night’s Show: Hoppy Quick – Catskill Mountain Woodsman|
|Wednesday Night’s Show: Golden Eagle Project|
|Senior-ize or Sell - Informative Seminar|
|Could it be Spring is officially in the air?|
|Easter Made-Easy with Cheesequick!|
|The 'Wedding Dresser' In Detail|
|Penthouse Roof Garden, Great Jones Place, NYC|
|A Home In Jeffersonville, NY Part 3: It Begins With The Drawings.|
|RELAY FOR LIFE BINGO NIGHT AT THE ANDES HOTEL APRIL 19th|
|One of the Nation’s First “Autism-Friendly” Emergency Departments Provides Customized, Compassionate Care|
|HealthAlliance Takes Strides to Engage the Community|
|Don't Stress The Commute...|
|Turn Key Commercial Building|
|Your Peaceful Country Getaway, Just Two Hours from the Tappan Zee!|
|The Fish are Biting in the Great Western Catskills|
|Win $10,000 Cash at the Delaware County Chamber’s 15th Annual Golf Tournament|
|Andes..."Land in the Sky"|
|Erik and Fernando find their Dream Home!|
|Looking for a gathering place?|
|Soup stylin' with the Fleischmanns!|
|Cabins with Quarter-Mile of Esopus Frontage!|
|Lovely Home in Greene NY!|
|Easter lambs for sale|
|DOORWAYS OF SAN MIGUEL DE ALLENDE|