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EPA: US GHG emissions up 6% in 2021 from 2020

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The US Environmental Protection Agency (EPA) released its 30 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 2021. In 2021, CO 2 emissions from fossil fuel combustion increased by 7% relative to the previous year.

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EPA Trends on EVs and PHEVs; beginning of a “measurable and meaningful impact” on new vehicle fuel economy and emissions

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With alternative fuel vehicles now approaching 1% of new vehicle production, however, they are in fact beginning to have a “ measurable and meaningful impact ” on overall new vehicle fuel economy and CO 2 emissions. EPA Trends report. —EPA 2014 Trends report. Alt fuel vehicle impact on OEMs.

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ORNL researchers quantify the effect of increasing highway speed on fuel economy

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This website, jointly maintained by the US Department of Energy and the US Environmental Protection Agency (EPA), provides information such as official EPA “window label” fuel economy estimates for city, highway, and combined driving for all U.S.-legal legal light-duty vehicles from 1984 to present. Speed increase.

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EPA, DOT Propose New Fuel Economy Labels; Addressing GHG Emissions, Fuel Consumption and Advanced Technology Vehicles

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Source: EPA. The US Department of Transportation (DOT) and the US Environmental Protection Agency (EPA) are jointly proposing changes to the fuel economy labels consumers see on the window of new vehicles in dealer showrooms. EPA and DOT are proposing two new label designs for comment. Click to enlarge.

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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. and CO 2 emissions from fossil fuel combustion up 2.6% Source: EPA. Source; EPA.

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CMU study shows autonomous vehicle algorithms can have considerable effect on fuel economy; need for new approaches in testing

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Autonomous vehicle driving behavior can have a considerable effect on fuel economy. However, the study also showed that autonomous vehicle (AV) technology following algorithms designed without considering efficiency can degrade fuel economy by up to 3%. —Mersky and Samaras (2016).

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U Chicago study proposes market-based approach to fuel economy standards to deal with impacts of fuel price volatility

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Volatile gasoline prices have caused some regulators and carmakers alike to question the cost and effectiveness of current fuel economy standards, with some arguing they are too stringent and others saying they should be even stronger. —Ryan Kellogg, summarizing his research.