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Just because something doesn’t do what you planned it to do doesn’t mean it’s useless.

 

Thomas Edison

Switching from Coal to Natural Gas reduces Greenhouse gases by 40%

RATE THIS! +2
Posted in Science on 11th Jul, 2012 07:56 PM by AlexMuller

No matter how you drill it, using natural gas as an energy source is a smart move in the battle against global climate change and a good transition step on the road toward low-carbon energy from wind, solar and nuclear power. This is from a new study by Cornell Professor Lawrence M. Cathles, published in the most recent edition of the peer-reviewed journal Geochemistry, Geophysics and Geosystems.

 

From a greenhouse point of view, it would be better to replace coal electrical facilities with nuclear plants, wind farms and solar panels, but replacing them with natural gas stations will be faster, cheaper and achieve 40 percent of the low-carbon-fast benefit.

 

Cathles study, “Assessing the Greenhouse Impact of Natural Gas,” includes additional findings about expanding the use of natural gas as an energy source, and the climate impact of “unconventional” gas drilling methods, including hydraulic fracturing in shale formations. They include:

 

* Although a more rapid transition to natural gas from coal and some oil produces a greater overall benefit for climate change, the 40-percent of low-carbon energy benefit remains no matter how quickly the transition is made, and no matter the effect of ocean modulation or other climate regulating forces.

 

* Although some critics of natural gas as a transition fuel have cited leakage rates as high as 8 percent or more of total production during drilling – particularly hydraulic fracturing extraction – more recent industry data and a critical examination of Environmental Protection Agency data supports leakage rates closer to 1.5 percent for both conventional and hydrofractured wells.

 

* Even at higher leakage rates, using natural gas as a transition to low-carbon energy sources is still a better policy than “business as usual” with coal and oil, due to the different rates of decay (and hence long-term global warming effect) of CO2 released in greater amounts by burning coal and oil and any methane released during natural gas extraction.

 

* Using natural gas as a transition fuel supports the push to low-carbon sources by providing the “surge capacity” when needed, or a buffer when solar and wind production wanes.

 



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Comments

Author: Guest
Posted: 2012-07-11
+0
We should try this Reply


 

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