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EPA GHG Inventory shows US GHG down 1.7% y-o-y in 2019, down 13% from 2005

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The US Environmental Protection Agency (EPA) released its 28 th annual Inventory of US Greenhouse Gas Emissions and Sinks (GHG Inventory), which presents a national-level overview of annual greenhouse gas emissions from 1990 to 2019. The number of vehicle miles traveled (VMT) by light-duty vehicles (i.e., from 2018 to 2019.

2005 418
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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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SRI developing process for co-gasification of methane and coal to produce liquid transportation fuels; negligible water consumption, no CO2

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Researchers from SRI International (SRI) are developing a methane-and-coal-to-liquids process that consumes negligible amounts of water and does not generate carbon dioxide. If biogas is substituted for conventional natural gas, total GHG emissions can further significantly reduced (190 gCO 2 /mile). Lifecycle GHG comparison.

Coal 257
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OnStar and Google demonstrate concept service for managing charging Chevrolet Volts with renewable energy

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Concept of the service and mobile app for renewable charging. OnStar and Google are working together to demonstrate a new OnStar service for managing the charging of Chevrolet Volts with renewable energy, using the 17 Chevrolet Volts in Google’s “Gfleet” based at the company’s headquarters in Mountain View, Calif. Click to enlarge.

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EPA: US GHG emissions in 2017 down 0.3% from 2016

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greenhouse gas emissions were 6,472.3 from 2016, according to the US Environmental Protection Agency’s (EPA’s) latest Greenhouse Gas Inventory. The decrease in total greenhouse gas emissions between 2016 and 2017 was driven in part by a decrease in CO 2 emissions from fossil fuel combustion. In 2017, total gross U.S.

2017 262
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Tsinghua University provincial-level lifecycle study finds fuel-cycle criteria pollutants of EVs in China could be up to 5x those of natural gas vehicles due to China’s coal-dominant power mix

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In regions where the share of coal-based electricity is relatively low, EVs can achieve substantial GHG reduction, the team reports in a paper in the ACS journal Environmental Science & Technology. According to the 12 th Five-Year Plan of the China Coal Industry (2011?2015)

Coal 231
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EIA projects decline in transportation sector energy consumption through 2037 despite increase in VMT, followed by increase

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EIA’s Annual Energy Outlook 2019 projects continued robust growth in US energy production, emergence of the United States as an energy exporter, and a cleaner S electric power generation mix. Light-duty vehicle miles traveled increases by 20% in the Reference case, growing from 2.9 trillion miles in 2018 to 3.5