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Understanding the variability of GHG life cycle studies of oil sands production

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Full-fuel-cycle GHG emissions estimates for reformulated gasoline pathways by LCA study. Nominal value of 70 g CO 2 /MJ for combustion emissions is applied evenly across all studies. He found that the variation in oil sands GHG estimates is due to a variety of causes. Credit: ACS, Brandt 2012. Click to enlarge.

Oil-Sands 225
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Ecofys report concludes current European regulations underestimating GHG reductions

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Substituting biofuels for marginal fossil-based liquid fuels results in the avoidance of significant GHG emissions that are not currently accounted for in the European Renewable Energy Directive (2009/28/EC), according to a new analysis by the consultancy Ecofys. Both effects increase the carbon footprint of conventional oil.

Oil-Sands 236
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New petroleum refining lifecycle model finds the variability in GHG emissions from refining different crudes as significant as magnitude expected in upstream operations

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PRELIM uses a more comprehensive range of crude oil quality and refinery configurations than used in earlier models and can quantify energy use and greenhouse gas (GHG) emissions with detail and transparency the better to inform policy analysis, the duo suggests.

Oil-Sands 236
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MIT/RAND Study Concludes Three Types of Alternative Jet Fuel May Be Available in Commercial Quantities Over the Next Decade

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Normalized well-to-wake GHG emissions for low-, baseline- and high-emission cases for jet fuel pathways under different land use change scenarios. Canadian oil sands and Venezuelan VHOs have the largest potential of several hundred thousand barrels per day of jet fuel, but their use would result in increased GHG emissions.

MIT 250
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ExxonMobil Outlook: 35% growth in energy demand by 2040; hybrids to account for ~50% of new vehicle sales

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Energy-related CO 2 emissions. Market forces and emerging public policies will continue to have an impact on energy-related carbon dioxide emissions. China will see the largest increase—more than 4 million oil-equivalent barrels per day. Source: ExxonMobil. Click to enlarge. Transportation fuels. Source: ExxonMobil.

Oil-Sands 309
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ExxonMobil: global GDP up ~140% by 2040, but energy demand ~35% due to efficiency; LDV energy demand to rise only slightly despite doubling parc

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The outlook shows a shift toward lower-carbon fuels in the coming decades that, in combination with efficiency gains, will lead to a gradual decline in energy-related carbon dioxide emissions. Across OECD nations, the Outlook assumes the implied cost of policies to reduce greenhouse gas emissions will reach about $80 per tonne in 2040.

Energy 252
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HEI report identifies potential health consequences from new vehicle fuels and technologies; recommended actions

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The large number of new vehicle fuels and technologies being developed to meet market and legislative pressure for improved efficiency and reduced emissions offer major opportunities for progress, according to a new report published by the Special Committee on Emerging Technologies (SCET) of the Health Effects Institute ( HEI ). Source: HEI.

Fuel 170