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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.
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.
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.) Driving patterns affect the WTW performance of PHEVs in two ways, they found. 100% natural gas (combined cycle).
In a new study published in the journal Applied Energy , Carnegie Mellon University (CMU) researchers found that controlled charging of plug-in hybrid electric vehicles (PHEVs) reduces the costs of integrating the vehicles into an electricity system by 54–73% depending on the scenario.
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.
Researchers at the University of Colorado, Boulder and the National Renewable Energy Laboratory (NREL) modeled the emissions impact had plug-in hybrid electric vehicles (PHEVs) replaced light duty gasoline vehicles in the Denver, Colorado area in summer 2006. million vehicles and would have increased by 3 tpd from power plants.
The environmental benefit of a large-scale deployment of plug-in hybrid electric vehicles (PHEVs) in the Canadian province of Alberta could vary significantly, ranging from a 40% to a 90% reduction in greenhouse gases, according to a study by electrical engineers at the University of Calgary’s Schulich School of Engineering.
One of the common arguments you hear from people in America who are not fans of the idea of electric vehicles is that they are mostly charged from electricity produced from coal power plants. Heavy Coal Using States Accounted for Only 10% of EV Sales in 2020. of electric vehicle sales in the US. of sales.
The program commits city departments to the leasing of pure battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs) to replace aging city vehicles, including those with conventional internal combustion engines. The LADWP will lease 44 BEVs and 113 of the PHEVs. per mile for EVs vs. $0.37
It adds an assessment of electrically chargeable vehicle configurations, such as plug-in hybrid, range extended, battery and fuel-cell electric vehicles. It also introduces an update of natural gas pathways, taking into account the addition of a European shale gas pathway. ICE-based vehicles and fuels. Dimethyl ether.
life-cycle study of three Li-ion battery chemistries for plug-in hybrid (PHEV) and battery-electric (BEV) vehicles generated a number of findings and identified opportunities for improving the environmental profile of Li-ion batteries for use in plug-in and electric vehicles. A recent Abt Associates, Inc. Click to enlarge.
Developing technologies for the conversion of biomass and coal-to-liquid fuels. By 2035, cellulosic ethanol and/or coal-and-biomass-to-liquid (CBTL) fuels with carbon capture and storage could replace about 15% of current fuel consumption in the transportation sector (1.7–2.5 Click to enlarge. emissions, according to the report.
WTW energy demand and GHG emissions for EV and PHEV drivetrains for various electricity sources; gasoline ICE vehicle is solid square, hybrid the hollow square. First, it considers the performance of both mature and novel hydrogen production processes, multiple electricity generation pathways and several alternative drivetrains.
Researchers at Argonne National Laboratory have published results of a well-to-wheels (WTW) lifecycle analysis of petroleum energy use and greenhouse gas emissions of plug-in hybrid electric vehicles employing gasoline, diesel, E85 and hydrogen (fuel cell) fuels, with an all-electric range between 10 to 40 miles.
MIT and the IEA both have newly released reports exploring the potential for and impact of a major expansion in global usage of natural gas, given the current re-evaluation of global supplies. The IEA takes a more conventional approach, assessing the impact on the penetration of vehicles burning gas as their fuel. Earlier post.)
Increased sales for hybrids and PHEVs. Sales of battery-powered electric vehicles are 65% lower in the AEO2013 Reference case than the year before, with annual sales in 2035 estimated to be about 119,000. Reductions in battery electric vehicles are offset by increased sales of hybrid and plug-in hybrid vehicles, which grow to about 1.3
The study, in press in the Journal of Power Sources , examines the efficiency and costs of current and future EVs, as well as their impact on electricity demand and infrastructure for generation and distribution, and thereby on GHG emissions. Compare GHG emissions and costs of PHEV and BPEV with those of regular cars.
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
Left, global light-duty fleet in the electric-favoring case; right, the hydrogen-favoring case. In both electric- and hydrogen-favoring cases, availability of low-carbon electricity and hydrogen prolonged the use of petroleum-fueled ICE vehicles. Top, without CCS and CSP; bottom, with CCS and CSP. Credit: ACS, Wallington et al.
The same commute in a plug-in hybrid electric vehicle (PHEV), meanwhile, would take a whopping 318 gallons. All told, electric miles necessitate threefold the water consumption and 17 times the water withdrawal of gasoline miles. But wait, aren’t PHEVs the environmentally friendly choice ? “If
While non-fossil fuels are expected to account for half of the growth in energy supplies over the next 20 years, the Outlook projects that oil and gas, together with coal, will remain the main source of energy powering the world economy, accounting for more than 75% of total energy supply in 2035, compared with 86% in 2015.
Researchers at MIT and the Ford Motor Company have found that depending on the location, lightweight conventional vehicles could have a lower lifecycle greenhouse gas impact than electric vehicles, at least in the near term. Their paper is published in the ACS journal Environmental Science & Technology. —Wu et al.
The US Department of Energy (DOE) has issued a wide-ranging Funding Opportunity Announcement ( DE-FOA-0000397 ) for up to a total of $27 million in Phase III small business awards in the areas of energy efficiency and renewable energy, electricity delivery and energy reliability, fossil energy, and nuclear energy.
Light-duty vehicles (LDVs) in the US may be able to reduce petroleum use by 50% by 2030, and by 80% by 2050; and reduce greenhouse gas (GHG) emissions by 80% by 2050, according to the newly published results of a two-year study by a committee convened by the National Research Council. Vehicles operating on electricity. Source: NRC.
For the study, they define EVs as including both battery-electric (BEV) and plug-in hybrid electric (PHEV) vehicles. Only in the case of high EV market share and a high renewable electricity standard (RES) do EVs make a material contribution to greenhouse gas (GHG) reductions, they found. —Choi et al.
The DOE-QTR defines six key strategies: increase vehicle efficiency; electrification of the light duty fleet; deploy alternative fuels; increase building and industrial efficiency; modernize the electrical grid; and deploy clean electricity. DOE’s most significant role in transport research is here. Vehicle Electrification.
O ften when I talk about Plug-Ins , I say that PHEV's are a perfect embodiment of the 80-20 rule. But in the case of the PHEV , the logic goes something like this: Roughly 80% of our daily trips are under 35 miles. However, 70% of vehicles can apparently be fueled with no increase of electrical capacity. 2) The U.S. 2) The U.S.
The transportation sector thus represents a significant fraction of total greenhouse gas (GHG) emissions both globally and in the US—light-duty vehicles (LDVs) are responsible for 17.5% With the current fuel mix of the US power sector (about half coal, about 30% “carbon-free”), CO 2 emissions for HEVs and EVs are similar.
The results of a new, comprehensive modeling study characterizing light-duty electric drive vehicle (EDV) deployment in the US over 108 discrete scenarios do not demonstrate a clear and consistent trend toward lower system-wide emissions of CO 2 , SO 2 , and NO x as EDV deployment increases. decrease in total CO 2 in 2050.
A US-wide county-level study comparing lifecycle greenhouse gas (GHG) emissions from several light-duty passenger gasoline and plug-in electric vehicles (PEVs) has found that PEVs can have larger or smaller carbon footprints than gasoline vehicles depending on regional factors and the specific vehicle models being compared.
Photo credit: Nick Starichenko / Shutterstock.com Contrary to common misconceptions , electric vehicles (EVs) generally have a smaller carbon footprint compared to traditional gasoline cars. This advantage remains true even when considering the electricity utilized for charging EVs.
In ARB’s analysis, most vehicles on the road in 2050 will need to be electric drive, or ultra low-carbon fuel vehicles—i.e., electricity or hydrogen—by 2050 in order to achieve the required 80% reduction in greenhouse gases. Well-to-wheels greenhouse gas emissions in 2020. Earlier post. ). Source: DOE.
A new study by researchers at the University of Colorado at Boulder projects the emission impacts of the widespread introduction of inexpensive and efficient electric vehicles into the US light duty vehicle (LDV) sector. In the BAU scenario, SO 2 emissions from electricity generation fall from 5 million tonnes in 2010 to 1.4
In 2009, the partnership changed direction and stepped up efforts to advance, in the shorter term, technologies for reducing petroleum use in combustion engines, including those using biofuels, as well as batteries that could be used in plug-in hybrid-electric or all electric vehicles. Earlier post.) Recommendation 3-15.
Mileage from Megawatts: Study finds enough electric capacity to "fill up" plug-in vehicles across much of the nation RICHLAND, Wash. – This is the first review of what the impacts would be of very high market penetrations of PHEVs, said Eric Lightner, of DOE's Office of Electric Delivery and Energy Reliability.
The same highly electrified scenarios, however, could not satisfy 80% GHG-reduction targets, even assuming 80% decarbonized electricity and no growth in travel demand. Within the transportation sector, the two basic options for reducing petroleum use and greenhouse gas (GHG) emissions are fuel-use reduction and fuel substitution.
About CalCars Plug-In Hybrids FAQ How to Get a PHEV Where PHEVs are Car-Makers Say. We can achieve that -- today -- with a plug-in hybrid (PHEV). A PHEV is essentially a regular hybrid with an extension cord. You can fill it up at the gas station, and you can plug it in to any 120-volt outlet.
Electric vehicle supply equipment (EVSE) is slowly making its way across the country, filling in the gaps in America’s charging network , and facilitating the adoption of electric vehicles (EVs). Using the Power Profiler , you can look up electricity production and fuel mixes by zip code.
About CalCars Plug-In Hybrids FAQ How to Get a PHEV Where PHEVs are Car-Makers Say. What Are Plug-In Hybrids (PHEVs)? What do car companies say about PHEVs? Dont PHEVs just shift pollution from gasoline cars to power plants? But its monumentally less pollution , even on the national (half-coal) grid.
The PHEV (Plug-in Hybrid Electric Vehicle), a subset of the electric car, combines a primary electric motor with a much smaller back-up engine fueled with a hydrocarbon/biofuel mix. (In In this paper PHEV refers solely to the long-range PHEV of 60 miles (100 km) electric-only range.)
It takes really long to form fossil fuels They are air pollutants – Combustion of fossil fuels emits greenhouse gases causes air pollution Global warming – as a result of greenhouse gas emission, atmospheric temperature increases ( how? ). 6 ElectricityElectric energy is another form of energy used in a vehicle.
We all know the primary benefit of plug-in hybrid electric vehicles (PHEVs) becoming a mainstream alternative to conventional internal combustion engines is to cut vehicle emissions. At the moment 90 per cent of electricity in Alberta is produced through greenhouse gas emitting methods such as by burning coal or natural gas.
According to the Air Resources Board analysis, most vehicles on the road in 2050 will need to be electric drive or ultra-low carbon fuel vehicles - that is electricity or hydrogen - if the 80 per cent reduction in greenhouse gases is to be achieved. million miles in real world testing.
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