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Monash study on solar-driven electrolysis for green hydrogen production cautions on life-cycle emissions and EROI

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Taking IRENA’s REmap scenario as a reference, renewable hydrogen could deliver 5% of total final energy demand in 2050. The NWIS comprises mostly gas-fired generation and has a GHG emission factor of 620 g CO 2 -e kWh -1. However, under reasonably anticipated conditions with grid buffering, the GHG emissions may be comparable to SMR.

Solar 459
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EPA proposes first US greenhouse gas emissions standards for aircraft

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The US Environmental Protection Agency (EPA) proposed greenhouse gas (GHG) emissions standards for airplanes used in commercial aviation and large business jets. The new international Airplane CO 2 Emission Standards adopted by ICAO in 2017 are prescribed in ICAO Annex 16, Volume III titled, Aeroplane CO 2 Emissions.

EPA 398
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EPA to evaluate whether lead emissions from piston-engine aircraft endanger human health and welfare

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The US Environmental Protection Agency (EPA) will evaluate whether emissions from piston-engine aircraft operating on leaded fuel contribute to air pollution that endangers public health and welfare. This is referred to as an “endangerment finding.” Children’s exposure to lead can cause irreversible and life-long health effects.

EPA 315
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DOE tool allows consumers to estimate localized upstream greenhouse gas emissions for EVs and PHEVs

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The US Department of Energy (DOE) has published a Beyond Tailpipe Emissions Calculator that provides estimates of total greenhouse gas (GHG) emissions associated with driving an electric vehicle (EV) or plug-in hybrid electric vehicle (PHEV), including emissions from the production of electricity used to power the vehicle.

PHEV 284
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FCA US LLC to pay ~$300M in criminal penalties over diesel emissions test cheating

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Specifically, FCA US purposely calibrated the emissions control systems on the subject vehicles to produce less NO x emissions during the federal test procedures than when the vehicles were being driven by FCA US’ customers under normal driving conditions. liter diesel program’s goals, timing, and marketing strategy.

Emissions 344
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Study finds sustainable aviation fuels show up to 70% reduction in particle mass emission compared to fossil fuel

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A study by a team of researchers from the US, Germany and Canada has found that sustainable aviation jet fuels show up to a 70% reduction in particle mass emission compared to a fossil fuel. Reductions up to 70% in non-volatile particle mass emission compared to the fossil reference fuel were observed at low power settings.

Fuel 199
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EIA projects increases in global energy consumption and emissions through 2050

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If current policy and technology trends continue, global energy consumption and energy-related carbon dioxide emissions will increase through 2050 as a result of population and economic growth. Liquid fuels remain the largest source of energy consumption, driven largely by the industrial and transportation sectors.

Global 259