Numerous studies have tackled the future environmental impact of battery-electric vehicles; the resulting assessments are highly uncertain. Now, a team of researchers at the Paul Scherrer Institut in Switzerland, with colleagues at Leiden University (Netherlands) and PBL Netherlands Environmental Assessment Agency have used Monte Carlo and global sensitivity analysis to... Read more →

SABIC, a global leader in the chemical industry, released the results of a recent lifecycle assessment of passenger car side doors using hybrid material solutions including laminates made with its continuous fiber-reinforced thermoplastic composite (CFRTC), the UDMAX GPP 45-70 tape. The material system aims to help improve compliance with stringent... Read more →

Greenhouse gas emissions (GHGE) from the Information and Communication Industry (ICT) could grow from roughly 1–1.6% in 2007 to exceed 14% of the 2016-level worldwide GHGE by 2040, accounting for more than half of the current relative contribution of the whole transportation sector, according to a new study from McMaster... Read more →

Researchers at the University of Michigan and Ford Motor Company have found that using a Level 4 connected and automated vehicle (CAV) subsystem could increase vehicle primary energy use and GHG emissions by 3–20% due to increases in power consumption, weight, drag, and data transmission. However, when potential operational effects... Read more →

The life-cycle water consumption of fuel cell electric vehicles using hydrogen produced from natural gas with steam methane reforming is almost 50% less than the life-cycle water consumption of conventional internal combustion engine vehicles using gasoline, according to a study by researchers at Argonne National Laboratory (ANL). If the hydrogen... Read more →

Analysts at the International Council on Clean Transportation (ICCT) have reviewed recent research into the greenhouse gas emissions from the manufacturing of lithium-ion batteries for electric vehicles. The ICCT analysis is in the overall context of life-cycle emissions of electric cars as compared to conventional internal combustion vehicles in Europe.... Read more →

A cradle-to-grave (C2G) assessment of greenhouse gas (GHG) emissions and costs for current (2015) and future (2025–2030) light-duty vehicles by a team from US DOE and national laboratories, major automakers, EPRI and Chevron has found that currently, hybrid and plug-in hybrid petroleum-fueled vehicles provide the most attractive cost in terms... Read more →

The Steel Recycling Institute (SRI), a business unit of the American Iron and Steel Institute, released a peer-reviewed study that examines the overall environmental impact of vehicle lightweighting using advanced high-strength steel (AHSS) compared with aluminum. The study, “Life Cycle Greenhouse Gas and Energy Study of Automotive Lightweighting,” found that... Read more →

Neste: use of our renewable fuels reduced global climate emissions by 8.3 million tons in 2017

Replacing fossil fuels with Neste’s renewable fuels reduced global climate emissions altogether by a 8.3 million metric tons—8.3 billion kilograms—in 2017, according to calculations made by the company. The figure equals removal of 3 million passenger cars from the roads for a full year—more than the amount of cars in... Read more →

Evea study estimates 69% reduction in GHG emissions for Global Bioenergies’ fully renewable ETBE compared to fossil gasoline

Life-cycle analysis specialist EVEA has estimated that fully renewable ETBE produced by the Global Bioenergies’ IBN-One plant would enable 69% reduction in greenhouse gas emissions compared to fossil gasoline. This figure was calculated for the current design planned for the IBN-One plant using a greenhouse gases emissions calculator based on... Read more →

In an open-access paper published in Scientific Reports, a team from Fraunhofer ISI and KIT (Karlsruhe Institute of Technology) has presented the first systematic overview of empirical findings on the electrification of vehicle mileage based on on actual PHEV (plug-in hybrid) and BEV (battery-electric vehicle) usage for the US and... Read more →

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. Indirect emissions from BEVs depend on the mix... Read more →

Study: expanding Brazilian sugarcane for ethanol could reduce global CO2 emissions by up to 5.6%

Vastly expanding sugarcane production in Brazil for conversion to ethanol could reduce current global CO2 emissions by as much as 5.6%, according to a new study by an international team led by researchers from the University of Illinois. This would be a massive undertaking, involving the conversion of hundreds of... Read more →

Researchers from Carnegie Mellon University and the University of Pittsburgh have found that the air pollution and greenhouse gas costs of shipping crude by rail are nearly twice as large as those for oil pipelines. Further, their estimates of air pollution and greenhouse gas costs are much larger than estimates... Read more →

Argonne updates GREET and AFLEET tools for transportation technologies analysis

Researchers at Argonne National Laboratory have released updates to two key tools for the analysis of advanced transportation technologies: GREET, used to assess greenhouse gases, regulated emissions and energy use in transportation; and AFLEET, used to calculate and compare the costs and environmental benefits of a broad range of alternative... Read more →

A new analysis by the NGO Transport & Environment (T&E) concludes that diesel cars emit more CO2 than equivalent cars on a full lifecycle basis—i.e., accounting for the emissions generated during production of the vehicle and the fuel. According to the T&E analysis, an average diesel car produces emits 3.65... Read more →

Digging into the differences in carbon accounting for biofuels

The benefit to the climate of using biofuels as a substitute for fossil fuels has been sharply contested for years; much of the disagreement is based on the assumptions underlying the carbon accounting in the lifecycle analysis. The argument essentially boils down to whether or not biofuels are inherently carbon... Read more →

A new study finds that as some of the world’s largest oilfields age, the energy required to keep them operating can rise dramatically even as the amount of petroleum they produce drops. Failing to take the changing energy requirements of oilfields into account can cause oilfield managers or policymakers to... Read more →

GLBRC research review concludes cellulosic biofuels can benefit the environment if managed correctly

Cellulosic biofuels could provide an environmentally sustainable way of meeting energy needs—but with a few important caveats, according to a new review of research by a team from the US Department of Energy-funded Great Lakes Bioenergy Research Center (GLBRC). Their paper is published in the journal Science. Although not yet... Read more →

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. The work is reported in a paper in the ACS journal Environmental Science & Technology. Under... Read more →

GM earns EPA ENERGY STAR Award for Environmental Leadership; energy use per vehicle in manufacturing down 10% YoY

General Motors earned a 2017 EPA ENERGY STAR Partner of the Year — Sustained Excellence award for continued leadership in protecting the environment through superior energy efficiency. GM’s commitment to reducing energy intensity saved $73 million in energy costs last year and avoided 388,000 metric tons of carbon emissions, equivalent... Read more →

A new study by a team at the International Council on Clean Transportation (ICCT) has concluded that the large-scale deployment of alternative jet fuels (AJFs) and the ability of the aviation sector to mitigate greenhouse gas (GHG) emissions through their use will be capped by a number of factors: the... Read more →

The Mercedes-Benz E 350 e plug-in hybrid (earlier post) has successfully completed the TÜV validation audit and received the Environmental Certificate. This award is based on a Life Cycle Assessment (LCA) in which the independent experts at TÜV Süd (the German Technical Inspection Authority) comprehensively assess the environmental impact of... Read more →

A new lifecycle analysis of corn ethanol released by the US Department of Agriculture (USDA) finds that GHG emissions associated with corn-based ethanol in the United States are about 43% lower than gasoline when measured on an energy-equivalent basis. Unlike other studies of GHG benefits, which relied on forecasts of... Read more →

Researchers at West Virginia University have characterized pump-to-wheels methane emissions from heavy-duty (HD) natural-gas-fueled vehicles and the compressed natural gas (CNG) and liquefied natural gas (LNG) fueling stations that serve them. The study, published as an open-access paper in the ACS journal Environmental Science & Technology, greatly expands on very... Read more →

Saint Jean Carbon building a high performance lithium-ion battery with recycled/upcycled material

Saint Jean Carbon Inc., a carbon science company engaged in the design and build of energy storage carbon materials, and a battery manufacturing partner will build a high-powered full-scale lithium-ion battery with recycled/upcycled material from an electric car power pack and upcycled anode material from Saint Jean Carbon. Saint John... Read more →

A new analysis from Argonne National Laboratory, funded by the US Department of Energy’s Bioenergy Technologies Office (BETO), shows the potential of an algae fractionation process to produce renewable diesel fuel with 63%–68% lower greenhouse gas (GHG) emissions than conventional diesel. The study is published in the journal Algal Research.... Read more →

U-M study finds crop-based biofuels associated with net increase in GHGs; falsifying the assumption of inherent carbon neutrality

A new study from University of Michigan researchers challenges the assumption that crop-based biofuels such as corn ethanol and biodiesel are inherently carbon-neutral—i.e., that only production-related greenhouse gas (GHG) emissions need to be tallied when comparing them to fossil fuels. In an open-access paper published in the journal Climatic Change,... Read more →

One of the key points of contention over the climate benefit of biofuels is the impact of land use change (LUC) associated with biofuel feedstock production. LUC results in biogeochemical (e.g., soil organic carbon) and biogeophysical (e.g., surface albedo, evapotranspiration, and surface roughness) changes. Of the biogeophysical factors, surface albedo... Read more →

A team from Ford’s Research and Innovation Center and LG Chem’s Corporate R&D group has reported the first cradle-to-gate (i.e., the factory gate—before delivery to the consumer) emissions assessment for a mass-produced battery in a commercial battery electric vehicle (BEV)—the lithium-ion battery pack used in the Ford Focus BEV. Their... Read more →

The US DRIVE Cradle-to-Grave Working Group has published the “Cradle-to-Grave Lifecycle Analysis of US Light-Duty Vehicle-Fuel Pathways: A Greenhouse Gas Emissions and Economic Assessment of Current (2015) and Future (2025–2030) Technologies” Argonne National Lab Report. The study provides a comprehensive lifecycle analysis (LCA), or cradle-to-grave (C2G) analysis, of the cost... Read more →

Argonne rolls out updated version of AFLEET alternative fuels and advanced vehicles analysis tool

The US Department of Energy (DOE’s) Argonne National Laboratory is releasing an updated version of its AFLEET tool to reflect the latest advances in alternative fuels and advanced vehicle technologies and updated emissions data. Sponsored by the DOE Clean Cities program, AFLEET (Alternative Fuel Life-Cycle Environmental and Economic Transportation Tool)... Read more →

A new study by consultancy Roland Berger defines an integrated roadmap for European road transport decarbonization to 2030 and beyond; the current regulatory framework for vehicle emissions, carbon intensity of fuels and use of renewable fuels covers only up to 2020/2021. The study was commissioned by a coalition of fuel... Read more →

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. The team from Carnegie Mellon... Read more →

Researchers at Argonne National Laboratory have analyzed the water consumption for transportation fuels in the United States using an extended lifecycle system boundary that includes the water embedded in intermediate processing steps. In a paper published in the RSC journal Energy & Environmental Science, they compared the water consumed per... Read more →

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. The Rice study by environmental engineer Daniel Cohan and alumnus Shayak Sengupta... Read more →

Singapore considers Model S EV a high carbon emission vehicle based on fuel consumption and upstream power generation

Channel NewsAsia recently reported on the case of a Tesla Model S owner in Singapore who, rather than receiving the Carbon Emissions-based Vehicle Scheme (CEVS) rebate he expected of S$15,000 (US$10,841) was hit with a CEVS surcharge of S$15,000 for having high carbon emissions. Under Singapore’s revised Carbon Emissions-Based Vehicle... Read more →

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. However, the anticipated—albeit now possibly delayed, per the recent Supreme Court decision—retirement of coal-fired... Read more →

Connecticut-based FuelCell Energy (FCE) has applied for a prospective pathway for California’s Low Carbon Fuel Standard (LCFS) for the production of hydrogen fuel produced from biogas derived from the mesophilic anaerobic digestion of wastewater sludge at a publicly owned treatment works (POTW). The biogas is cleaned, then internally reformed in... Read more →

Mercedes-Benz has released the lifecycle analysis for its first plug-in hybrid SUV, the GLE 500 e 4MATIC (GLE 550e in the US). (Earlier post.) The GLE 500 e 4MATIC burns 3.7–3.3 liters of fuel for every 100 km (63.5 to 71.2 mpge), equating to CO2 emissions of 84–78 g/km; electric... Read more →

EPA: jatropha-based biofuels could qualify as biomass-based diesel or advanced biodiesel under RFS

Based on its analysis of the production and transport components of the lifecycle greenhouse gas emissions of biofuel made from jatropha oil, the US EPA anticipates that biofuels produced from jatropha oil could qualify as biomass-based diesel or advanced biofuel under the Renewable Fuel Standard program if typical fuel production... Read more →

Argonne analysis shows greenhouse gas emissions similar for shale, conventional oil

Shale oil production generates greenhouse gas emissions at levels similar to conventional crude oil production, according to a pair of new studies released by the US Department of Energy’s Argonne National Laboratory. The research, conducted by Argonne researchers in collaboration with Stanford University and the University of California, Davis, analyzed... Read more →

A team at Argonne National Laboratory has taken a closer look at vehicle-cycle (all processes related to vehicle manufacturing) and vehicle total life-cycle (vehicle-cycle plus fuel cycle—i.e., the use phase) impacts of substituting lightweight materials into vehicles. In a study published in the ACS journal Environmental Science & Technology, they... Read more →

Honda has announced several initiatives under its new “Green Path” approach to reducing the total life-cycle environmental impact of its products and operations in North America. Among these is a $210-million investment in a new, more environmentally responsible auto-body painting facility and innovative paint process at its Marysville, Ohio auto... Read more →

EPRI-NRDC report finds widespread vehicle electrification and a cleaner grid could lead to substantial cuts in GHG by 2050

Widespread adoption of electric transportation, including electrification in the off-road sector, could lead to substantial reductions in greenhouse gas (GHG) emissions and could modestly improve air quality, according to a new analysis released by the Electric Power Research Institute (EPRI) and the Natural Resources Defense Council (NRDC). The report, “Environmental... Read more →

According to a new lifecycle analysis by a team at Carnegie Mellon University, a battery electric vehicle (BEV) powered with natural gas-based electricity achieves around an average 40% lifecycle greenhouse gas (GHG) emissions reduction when compared to a conventional gasoline vehicle. Plug-in hybrids (PHEVs), either with a 30- or 60-km... Read more →

Study finds EV use-phase fuel savings exceed marginal increase in energy demand for WBG semiconductor manufacturing by 2 orders of magnitude

Power electronics semiconductors, which manage voltage and current, are a key technology for enabling improvements in “fuel economy” in electric vehicles. While conventional silicon-based semiconductor technology currently owns the plug-in vehicle power electronics market, emerging wide band gap (WBG) semiconductors offer significantly greater energy efficiency potential than silicon. A team... Read more →

EPA honors winners of the 20th Annual Presidential Green Chemistry Challenge; advanced biofuels

The US Environmental Protection Agency (EPA) honored the six 2015 Presidential Green Chemistry Challenge Award winners at a ceremony in Washington, DC. EPA’s Office of Chemical Safety and Pollution Prevention sponsors the Presidential Green Chemistry Challenge Awards in partnership with the American Chemical Society Green Chemistry Institute and other members... Read more →

A team at the University of Calgary (Canada) has compared the energy intensities and lifecycle GHG emissions of unconventional oils (oil sands and oil shale) alongside shale gas, coal, lignite, wood and conventional oil and gas. In a paper published in the ACS journal Environmental Science & Technology, they report... Read more →

Regionally specific lifecycle CO2 emissions per mile traveled for plug-in hybrid electric vehicles (PHEVs) and battery electric vehicles (BEVs) in the US can vary widely based on grid emission factors (i.e., the “carbon footprint” of electricity production and use), according to a new study by researchers at Carnegie Mellon University.... Read more →