The greenhouse impact of unconventional gas for electricity generation

Hultman, Nathan; Rebois, Dylan; Scholten, M.J. de Wild; Ramig, Christopher

doi:10.1088/1748-9326/6/4/049504

Cited by 72 publications

(86 citation statements)

References 5 publications

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“…They concluded that relatively straightforward measures could be implemented to minimize the potential release of greenhouse gases associated with the extraction of gas from shale (26). A more recent study by Hultman, et al (27) adopting a transparent and consistent approach to comparing the GHG footprints of conventional natural gas, shale gas, and coal, concluded that in terms of electricity generation the GHG impacts of shale gas are 11% higher than those for conventional gas (higher than the value reported by Jiang et al), but only 56% of the impact expected for coal.…”

Section: Discussionmentioning

confidence: 99%

Implications of the Recent Reductions in Natural Gas Prices for Emissions of CO₂from the US Power Sector

Salovaara

Chen

2012

Environ. Sci. Technol.

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CO 2 emissions from the US power sector decreased by 8.76% in 2009 relative to 2008 contributing to a decrease over this period of 6.59% in overall US emissions of greenhousegases. An econometric model, tuned to data reported for regional generation of US electricity, is used to diagnose factors responsible for the 2009 decrease. More than half of the reduction is attributed to a shift from generation of power using coal to gas driven by recent decrease in gas prices in response to the increase in production from shale. An important result of the model is that when the cost differential for generation using gas rather than coal falls below 2-3 cents/kWh, less efficient coal fired plants are displaced by more efficient natural-gas-combined-cycle (NGCC) generation alternatives. Costs for generation using NGCC decreased by close to 4 cents/kWh in 2009 relative to 2008 ensuring that generation of electricity using gas was competitive with coal in 2009 in contrast to the situation in 2008 when gas prices were much higher. A modest price on carbon could contribute to additional switching from coal to gas with further savings in CO 2 emissions.

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Section: Discussionmentioning

confidence: 99%

Implications of the Recent Reductions in Natural Gas Prices for Emissions of CO₂from the US Power Sector

Salovaara

Chen

2012

Environ. Sci. Technol.

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“…Published averaged fugitive methane emissions emitted as a percent of total natural gas production 13,27,[40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56][57][58][59] . Please click here to view a larger version of this figure.…”

Section: Figure 1 Fugitive Methane Emissionsmentioning

confidence: 99%

Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions

Johnson

Covington

Clark

2016

JoVE

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The use of natural gas continues to grow with increased discovery and production of unconventional shale resources. At the same time, the natural gas industry faces continued scrutiny for methane emissions from across the supply chain, due to methane's relatively high global warming potential (25-84x that of carbon dioxide, according to the Energy Information Administration). Currently, a variety of techniques of varied uncertainties exists to measure or estimate methane emissions from components or facilities. Currently, only one commercial system is available for quantification of component level emissions and recent reports have highlighted its weaknesses.In order to improve accuracy and increase measurement flexibility, we have designed, developed, and implemented a novel full flow sampling system (FFS) for quantification of methane emissions and greenhouse gases based on transportation emissions measurement principles. The FFS is a modular system that consists of an explosive-proof blower(s), mass airflow sensor(s) (MAF), thermocouple, sample probe, constant volume sampling pump, laser based greenhouse gas sensor, data acquisition device, and analysis software. Dependent upon the blower and hose configuration employed, the current FFS is able to achieve a flow rate ranging from 40 to 1,500 standard cubic feet per minute (SCFM). Utilization of laser-based sensors mitigates interference from higher hydrocarbons (C2+). Co-measurement of water vapor allows for humidity correction. The system is portable, with multiple configurations for a variety of applications ranging from being carried by a person to being mounted in a hand drawn cart, on-road vehicle bed, or from the bed of utility terrain vehicles (UTVs). The FFS is able to quantify methane emission rates with a relative uncertainty of ± 4.4%. The FFS has proven, real world operation for the quantification of methane emissions occurring in conventional and remote facilities. Video LinkThe video component of this article can be found at

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“…The climate implications of such abundant natural gas have been hotly debated. Some researchers have observed that abundant natural gas substituting for coal could reduce carbon dioxide (CO 2 ) emissions [3][4][5][6] . Others have reported that the non-CO 2 greenhouse gas emissions associated with shale gas production make its lifecycle emissions higher than those of coal 7,8 .…”

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confidence: 99%

“…2 Potsdam Institute for Climate Impact Research, PO Box 60 12 03, D-14412 Potsdam, Germany. 3 BAEconomics, PO Box 5447, Kingston, Australian Capital Territory 2604, Australia. 4 Resources for the Future, 1616 P Street Northwest, Washington, DC 20036, USA.…”

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confidence: 99%

Limited impact on decadal-scale climate change from increased use of natural gas

McJeon

Edmonds

Bauer

et al. 2014

Nature

205

109

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The greenhouse impact of unconventional gas for electricity generation

Cited by 72 publications

References 5 publications

Implications of the Recent Reductions in Natural Gas Prices for Emissions of CO₂from the US Power Sector

Implications of the Recent Reductions in Natural Gas Prices for Emissions of CO₂from the US Power Sector

Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions

Limited impact on decadal-scale climate change from increased use of natural gas

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The greenhouse impact of unconventional gas for electricity generation

Cited by 72 publications

References 5 publications

Implications of the Recent Reductions in Natural Gas Prices for Emissions of CO2from the US Power Sector

Implications of the Recent Reductions in Natural Gas Prices for Emissions of CO2from the US Power Sector

Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions

Limited impact on decadal-scale climate change from increased use of natural gas

Contact Info

Product

Resources

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Implications of the Recent Reductions in Natural Gas Prices for Emissions of CO₂from the US Power Sector

Implications of the Recent Reductions in Natural Gas Prices for Emissions of CO₂from the US Power Sector