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Study suggests China urban passenger transport emissions could peak in 2030

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A team of researchers in China suggest that, in the context of promoting the use of clean fuel vehicles and increasing vehicle fuel efficiency, CO 2 emissions of China’s urban passenger transport sector could reach a peak of 225 MtCO 2 in 2030. A paper on their study appears in the journal Energy Policy.

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ORNL study finds best current use of natural gas for cars is efficient production of electricity for EVs

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However, they also noted, high PTW efficiencies and the moderate fuel economies of current compressed natural gas vehicles (CNGVs) make them a viable option as well. If CNG were to be eventually used in hybrids, the advantage of the electric generation/EV option shrinks. Their open access paper is published in the journal Energy.

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EPA: US greenhouse gases dropped 3.4% in 2012 from 2011; down 10% from 2005 levels

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US greenhouse gas emissions by gas. The US Environmental Protection Agency (EPA) released its 19 th annual report of overall US greenhouse gas (GHG) emissions, showing a 3.4% decrease in 2012 from 2011. Total emissions of the six main greenhouse gases in 2012 were equivalent to 6,526 million metric tons of carbon dioxide.

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Rice study finds using natural gas for electricity and heating, not transportation, more effective in reducing GHGs

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Rice University researchers have determined a more effective way to use natural gas to reduce climate-warming emissions would be in the replacement of existing coal-fired power plants and fuel-oil furnaces rather than burning it in cars and buses. However, residential uses and exports of natural gas were not considered in those comparisons.

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California 2017 GHG inventory shows 1.2% total drop from 2016; transportation sector emissions up 1%

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The California Air Resources Board’s latest state inventory of greenhouse gas emissions shows that California’s GHG emissions continue to decrease. The transportation sector remains the largest source of GHG emissions in the state, and saw a 1% increase in emissions in 2017. Overview of GHG Emissions from the Transportation Sector.

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EIA: US electricity generation from coal and natural gas both increased with summer heat

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In August 2012, coal produced 39% of US electricity, up from a low of 32% in April 2012, when the natural gas share of generation equaled that of coal. Data for 2011 and 2012 are preliminary. Chart includes generation from the electric power sector only, excluding commercial and industrial generators.

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California greenhouse gas emissions up 2% in 2012; driven by economic growth, closing of San Onofre, and drought

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According to the most recent greenhouse gas emissions inventory from the California Air Resources Board (ARB), the state’s total greenhouse gas emissions rose 1.7% in 2012 from 2011 to 459 million tonnes of carbon dioxide equivalent (MMTCO 2 e). However, transportation related GHG emissions have dropped 11% since 2006.

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