Remove Coal Remove Gas-Electric Remove PHEV Remove Technology
article thumbnail

ORNL study finds best current use of natural gas for cars is efficient production of electricity for EVs

Green Car Congress

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.

article thumbnail

ICCT LCA study finds only battery and hydrogen fuel-cell EVs have potential to be very low-GHG passenger vehicle pathways

Green Car Congress

In addition to its regional and temporal scope, this study is distinct from earlier LCA literature in four key aspects: This study considers the lifetime average carbon intensity of the fuel and electricity mixes, including biofuels and biogas. This is especially important for assessing the GHG emissions of PHEVs.

Hydrogen 418
article thumbnail

Univ of Toronto study details impacts of interaction between driving patterns and electricity generation for WTW energy use and GHG emissions for PHEVs

Green Car Congress

WTW GHG emissions of vehicles across driving patterns and PHEV charging scenarios. Patterned portions represent GHG emissions associated with electric propulsion. Solid left bar = hydro electricity scenario.) Their paper is published is the ACS journal Environmental Science & Technology. 100% natural gas (combined cycle).

PHEV 210
article thumbnail

Study finds PHEVs will reduce net emissions of CO2 and NOx; upward pressure on SO2

Green Car Congress

Net emissions resulting from the use of plug-in hybrid electric vehicles (PHEVs) depend on the efficiency of the conventional vehicle fleet; PHEV CD (all-electric, charge-depleting mode) efficiency; charging strategy; battery pack capacity; driving patterns; and generator mix used for charging. Scott Peterson, J.

PHEV 240
article thumbnail

Argonne releases GREET 2020

Green Car Congress

The GREET (Greenhouse Gases, Regulated Emissions, and Energy use in Transportation) tool provides a common, transparent platform for lifecycle analysis (LCA) of of the energy and environmental effects of a wide variety of transportation fuels and vehicle technologies in major transportation sectors (i.e., CO 2 -derived ethanol.

2020 324
article thumbnail

National Research Council Report on Americas Energy Future Highlights Vehicle Efficiency Technologies, Conversion of Biomass and Coal-to-Liquids Fuels, and Electrifying the Light Duty Fleet with PHEVs, BEVs and FCVs

Green Car Congress

However, the report concludes, initiating deployment of these technologies is urgent; actions taken—or not taken—between now and 2020 to develop and demonstrate several key technologies will largely determine the nation’s energy options for many decades to come. emissions, according to the report.

Coal 150
article thumbnail

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

Green Car Congress

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. However, US coal shipments, which are primarily via rail, decline slightly. trillion miles in 2018 to 3.5