Remove Coal Remove Fuel Remove Gasoline Remove Oil-Sands
article thumbnail

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

Green Car Congress

Full-fuel-cycle GHG emissions estimates for reformulated gasoline pathways by LCA study. He found that the variation in oil sands GHG estimates is due to a variety of causes. These include oil sands, enhanced oil recovery, coal-to-liquids and gas-to-liquids synthetic fuels, and oil shale.

Oil-Sands 225
article thumbnail

Argonne study finds shale gas GHG lifecycle emissions 6% lower than natural gas, 23% lower than gasoline and 33% lower than coal; upstream methane leakage a key contributor

Green Car Congress

Life-cycle GHG emissions per MJ of fuel produced and combusted for both 100-year and 20-year time horizons. Gasoline section shows results for fuel derived from both conventional oil and oil sands. Expansion bars show the components of fuel production. Credit: ACS, Burnham et al. Click to enlarge.

Gas 284
article thumbnail

Ecofys report concludes current European regulations underestimating GHG reductions

Green Car Congress

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
article thumbnail

Researchers describe the “where” and “when” of life cycle emissions from gasoline and ethanol in the US

Green Car Congress

Contributions of regions to total life cycle emissions for three fuels (µg per vehicle-mile traveled per km 2 land area). Upstream processes involved in fuel production also contribute to overall environmental impacts. Dashed lines show US average emissions. Credit: ACS, Tessum et al. Click to enlarge. the contiguous US).

Gasoline 236
article thumbnail

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

Green Car Congress

ExxonMobil projects that meeting future energy demand will be supported by more efficient energy-saving practices and technologies; increased use of less-carbon-intensive fuels such as natural gas, nuclear and renewables; as well as the continued development of technology advances to develop new energy sources. Transportation fuels.

Oil-Sands 309
article thumbnail

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

Green Car Congress

Comparison of GHGenius, JACOBS, TIAX, and the new PRELIM gasoline greenhouse gas (GHG) estimates using base case estimates and variations from the scenario analysis. Annual GHG emissions from a large refinery are comparable to the emissions of a typical 500 MW coal-fired power plant. Credit: ACS, Abella and Bergerson. Click to enlarge.

Oil-Sands 236
article thumbnail

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

Green Car Congress

ExxonMobil’s Outlook for Energy projects that carbon-based fuels will continue to meet about three quarters of global energy needs through 2040—a finding consistent with many projections, including those made by the International Energy Agency. Half of that increase will come from the Asia Pacific region, led by China.

Energy 252