This site uses cookies to improve your experience. To help us insure we adhere to various privacy regulations, please select your country/region of residence. If you do not select a country, we will assume you are from the United States. Select your Cookie Settings or view our Privacy Policy and Terms of Use.
Cookie Settings
Cookies and similar technologies are used on this website for proper function of the website, for tracking performance analytics and for marketing purposes. We and some of our third-party providers may use cookie data for various purposes. Please review the cookie settings below and choose your preference.
Used for the proper function of the website
Used for monitoring website traffic and interactions
Cookie Settings
Cookies and similar technologies are used on this website for proper function of the website, for tracking performance analytics and for marketing purposes. We and some of our third-party providers may use cookie data for various purposes. Please review the cookie settings below and choose your preference.
Strictly Necessary: Used for the proper function of the website
Performance/Analytics: Used for monitoring website traffic and interactions
However, they also noted, high PTW efficiencies and the moderate fueleconomies 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. —Curran et al.
While oil will remain the most widely used fuel, overall energy demand will be reshaped by a continued shift toward less-carbon-intensive energy source as well as steep improvements in energy efficiency in areas such as transportation, where the expanded use of advanced and hybrid vehicles will help push average new-car fueleconomy to 48 mpg (4.9
The US Environmental Protection Agency (EPA) released its 28 th annual Inventory of US Greenhouse Gas Emissions and Sinks (GHG Inventory), which presents a national-level overview of annual greenhouse gas emissions from 1990 to 2019. from 2018 to 2019, and CO 2 emissions just from fossil fuel combustion decreased 2.7%
Among the transportation-related elements of US President Barack Obama’s new climate action plan, which he is outlining today in a speech at Georgetown University, is the development of new fueleconomy standards for heavy-duty vehicles post-2018. Reducing greenhouse gas emissions in the US. Earlier post.).
In regions where the share of coal-based electricity is relatively low, EVs can achieve substantial GHG reduction, the team reports in a paper in the ACS journal Environmental Science & Technology. According to the 12 th Five-Year Plan of the China Coal Industry (2011?2015)
USenergy-related carbon dioxide emissions and fossil fuel energy consumption. Petroleum emissions from other sectors have fallen in recent years as equipment and processes that use petroleum fuels have been replaced by those using other fuels, in particular, natural gas.
Technology warming potential (TWP) for three sets of natural gasfuel-switching scenarios. (A) A) CNG light-duty cars vs. gasoline cars; (B) CNG heavy-duty vehicles vs. diesel vehicles; and (C) combined-cycle natural gas plants vs. supercritical coal plants using low-CH 4 coal. Source: Alvarez et al. leakage.
The rising fueleconomy of LDVs more than offsets the modest growth in VMT, resulting in a 25% decline in LDV energy consumption decline between 2012 and 2040 in the AEO2014 Reference case. As a result, annual increases in vehicle miles traveled (VMT) in LDVs average 0.9% from 2012 to 2040, compared to 1.2% per year, from 21.5
The IEA said that this reflects the continued domination of fossil fuels—particularly coal—in the energy mix and the slow uptake of other, lower-carbon supply technologies. In 2012, sales of hybrid-electric vehicles passed the one million mark. In 1990 the underlying carbon intensity of supply was 57.1 tCO 2 /toe).
Rice University researchers have determined a more effective way to use natural gas to reduce climate-warming emissions would be in the replacement of existing coal-fired power plants and fuel-oil furnaces rather than burning it in cars and buses.
Electric vehicles charged in coal-heavy regions can create more human health and environmental damages from life cycle air emissions than gasoline vehicles, according to a new consequential life cycle analysis by researchers from Carnegie Mellon University.
They also found that the total costs of ownership (TCO) of the electric and diesel trucks are similar. Over an array of possible conditions, the median TCO of electric trucks is 22% less than that of diesel trucks on the NYCC. However, the cost-competitiveness of the electric truck diminishes in drive cycles with higher average speed.
over the prior year, according to the EPA’s newly published Inventory of US Greenhouse Gas Emissions and Sinks: 1990–2013. Transportation emissions increased as a result of a small increase in vehicle miles traveled (VMT) and fuel use across on-road transportation modes. MMT CO 2 Eq.) Total US emissions have increased by 5.9%
Shale gas offsets declines in other US supply to meet. The Annual Energy Outlook 2011 (AEO2011) Reference case released yesterday by the US Energy Information Administration (EIA) more than doubles the technically recoverable US shale gas resources assumed in AEO2010 and added new shale oil resources. Source: EIA. Click to enlarge.
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. This growth arises from increases in air transportation outpacing increases in aircraft fuel efficiency. trillion miles in 2018 to 3.5
Year-over-year, US greenhouse gas emissions were 0.5% lower in 2017 than the prior year (after accounting for sequestration from the land sector), and power sector emissions fell 4.2%, according to the 2019 edition of the US Environmental Protection Agency’s (EPA) annual report on greenhouse gas (GHG) emissions.
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.
Carbon intensity changes in the electric power and industrial end use sectors. In 2009, the carbon intensity of the electric power sector decreased by nearly 4.3%, primarily due to fuel switching as the price of coal rose 6.8% from 2008 to 2009 while the comparable price of natural gas fell 48% on a per Btu basis.
EIA’s AEO2012 projects a continued decline in US imports of liquid fuels due to increased production of gas liquids and biofuels and greater fuel efficiency. Other findings from the AEO2012 Reference case include: US production of natural gas is expected to exceed consumption early in the next decade. Source: EIA.
The study found that TCO for electric and diesel medium-duty urban delivery trucks were similar. The electric truck is relatively more cost-effective on the NYCC and when VKT demand is higher. Cost-competitiveness of the electric truck diminishes in drive cycles with higher average speeds. Credit: ACS, Lee et al.
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.
For the first time since UCS began the Automaker Rankings report in 2000, all eight major automakers reduced their average greenhouse gas (GHG) and smog-forming emissions compared to their fleet averages from 1998, the model year examined in the first report. Climate Change Coal Emissions Fuel Efficiency' Methodology.
Improvements result from an optimistic scenario achieving doubling of new vehicle fueleconomy in 2035 from today’s value. Developing technologies for the conversion of biomass and coal-to-liquid fuels. from liquid-fuel production plants is captured and stored geologically. Source: America’s Energy Future, Fig.
quadrillion Btu in 2035, as a result of fueleconomy improvements achieved through stock turnover as older, less efficient vehicles are replaced by newer, more fuel-efficient vehicles. Beyond 2035, LDV energy demand begins to level off as increases in travel demand begin to exceed fueleconomy improvements in the vehicle stock.
Energy-related carbon dioxide emissions in those countries are projected to be about 10% below 1980 levels, even though they will have about 40% more people and significantly larger economies. Across OECD nations, the Outlook assumes the implied cost of policies to reduce greenhouse gas emissions will reach about $80 per tonne in 2040.
Among medium- and heavy-trucks, Class 8 trucks are the largest CO 2 emitters and fuel users, consuming two-thirds of all truck fuel, or 1.57 Current fueleconomy for Class 8 trucks is estimated by the US Department of Energy at 6.0 However, substantial reductions in heavy-truck greenhouse gas emissions can be achieved.
Projected rates of fuel consumption improvement under different scenarios relative to past experience and the 2016 and 2025 CAFE standards. Vehicles operating on electricity. While natural gas vehicles would reduce petroleum use, they would have limited impact on GHG emissions. Source: NRC. Click to enlarge. —Douglas M.
The WEO finds that the extraordinary growth in oil and natural gas output in the United States will mean a sea-change in global energy flows. In the New Policies Scenario, the WEO ’s central scenario, the United States becomes a net exporter of natural gas by 2020 and is almost self-sufficient in energy, in net terms, by 2035.
Results of a lifecycle analysis by a team at the University of Michigan suggest that multiple types of natural gas-powered vehicles—i.e., Results of a lifecycle analysis by a team at the University of Michigan suggest that multiple types of natural gas-powered vehicles—i.e., —Dai and Lastoskie.
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. Impartial DOE research can help inform these standards.
A team at the University of Michigan Transportation Research Institute (UMTRI) study has assessed the relative amounts of greenhouse-gas emissions from driving a battery-electric vehicle (BEV) compared with greenhouse-gas emissions from driving a traditional gasoline-powered vehicle in different countries of the world.
Adam Brandt and his colleagues used historical relationships to project future demand for (a) transport services; (b) all liquid fuels; and (c) substitution with alternative energy carriers, including electricity. The Efficiency Policy scenario takes account of recent adopted or proposed fueleconomy goals.
This release includes the following expansions and updates: Major expansions and updates: Water consumption of fuel production pathways: developed and updated water consumption for hydrogen from various sources, petroleum fuels, biofuels, and hydro-electric power. Soybeans-based fuels: updated N 2 O emissions in soybean fields.
Assuming no new policies, growth in energy-related CO 2 is driven by electricity and transportation fuel use. It does include the revised handling of fueleconomy standards to reflect the proposal for light-duty vehicles in model years 2012-2016. Total domestic natural gas production grows from 20.6
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.
Under the WEO 2011 central scenario, oil demand rises from 87 million barrels per day (mb/d) in 2010 to 99 mb/d in 2035, with all the net growth coming from the transport sector in emerging economies. Subsidies that encourage wasteful consumption of fossil fuels jumped to over $400 billion. Electric vehicles. billion in 2035.
At the same time, energy efficiency gains and increased use of renewable energy sources and lower carbon fuels, such as natural gas, are expected to help reduce by half the carbon intensity of the global economy. The company forecasts modest gains for plug-in electric cars, with cost and functionality remaining barriers.
The Annual Energy Outlook 2015 (AEO2015) released today by the US Energy Information Administration (EIA) projects that US energy imports and exports will come into balance—a first since the 1950s—because of continued oil and natural gas production growth and slow growth in energy demand. Tcf in the High Oil and Gas Resource case.
percent of energy consumption to come from non fossil fuels [ earlier post ]. In Germany, renewable electricity generation will be 35 percent by 2020, and 50 percent by 2050. Closer to home, the federal fueleconomy standards require the average fleet fueleconomy of OEMs that sell vehicles in the USA to be 35.5
As personal mobility increases, average new-car fueleconomy (including SUVs and light trucks) will improve as well, rising from about 30 miles per gallon (7.83 Our in-depth analysis shows that even if every light-duty vehicle in the world was fully electric by 2040, the demand for liquids could still be similar to levels seen in 2013.
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.
Among the direct transportation-related provisions in the extensive package are a low-carbon fuel standard for all transportation fuels; financial support for large scale demonstrations of electric vehicles; and financial support for automakers retooling plants to make electric vehicles. Clean Fuels and Vehicles.
Where energy resources are concerned, lignite, hard coal and uranium figure principally in car production. Natural gas and crude oil are strongly influenced by fuel consumption during the use phase. Regulated fuel pump and oil pump that adjust their output according to the required load.
Implemented new pathways for fuel cell electric medium- and heavy-duty vehicles powered by gaseous hydrogen. Expanded the power sector in GREET with several natural gas and coal combined heat and power (CHP) and carbon capture and storage (CCS) technologies. Updated methane leakage emissions for natural gas pathways.
We organize all of the trending information in your field so you don't have to. Join 5,000+ users and stay up to date on the latest articles your peers are reading.
You know about us, now we want to get to know you!
Let's personalize your content
Let's get even more personalized
We recognize your account from another site in our network, please click 'Send Email' below to continue with verifying your account and setting a password.
Let's personalize your content