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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 proposes CO2 emission standards for new fossil fuel-fired power plants

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The US Environmental Protection Agency (EPA) has proposed Clean Air Act standards to reduce CO 2 emissions from fossil-fuel fired power plants (electric utility generating units, EGUs). The proposed rulemaking establishes separate standards for natural gas and coal plants. Earlier post.)

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EIA: US energy-related CO2 emissions in 2012 lowest since 1994; reflects drop in coal use

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US energy-related CO 2 emissions in 2012 were the lowest since 1994, at 5.3 The largest drop in emissions in 2012 came from coal, which is used almost exclusively for electricity generation. EIA will publish a full analysis of 2012 energy-related CO 2 emissions later this year. Duke study.

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Harvard team finds large-scale US wind power would cause warming that would take roughly a century to offset

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All large-scale energy systems have environmental impacts, and the ability to compare the impacts of renewable energy sources is an important step in planning a future without coal or gas power. In the journal Joule , Harvard researchers report the most accurate modelling yet of how increasing wind power would affect climate.

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EPA annual report finds automakers outperforming GHG emissions standards

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For the second consecutive model year, the automotive industry outperformed the national greenhouse gas (GHG) emissions standards by a wide margin, according to the US Environmental Protection Agency’s (EPA) second annual Greenhouse Gas Emissions Standards for Light Duty Vehicles: Manufacturer’s Performance Report.

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California ARB Adopts Regulation Implementing 33% Renewable Electricity Standard by 2020

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The California Air Resources Board adopted unanimously a regulation establishing a 33% renewable electricity standard. Under the regulation, one-third of the electricity sold in the state in 2020 must come from renewable sources of energy. The new regulation will be one of AB 32’s largest emission-reduction strategies.

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Chevrolet begins taking orders in all 50 US states for 2012 Volt; $1K drop in starting price

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Chevrolet dealers in all 50 states in the US are now taking orders for the 2012 Chevrolet Volt. The starting price of the 2012 model is more than $1,000 below the 2011 base model. Chevrolet expects to build up to 45,000 Volts for retail and fleet customers in the United States during calendar year 2012.

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