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California 2017 GHG inventory shows 1.2% total drop from 2016; transportation sector emissions up 1%

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The California Air Resources Board’s latest state inventory of greenhouse gas emissions shows that California’s GHG emissions continue to decrease. These reductions have occurred while California’s economy has continued to grow. while the carbon intensity of its economy declined by 4.5%. MMTCO 2 e (6%) from 2013 to 2017.

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Energy researchers: clean US hydrogen economy is within reach, but needs a game plan

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However, they note, a clean US hydrogen economy will require a comprehensive strategy and a 10-year plan. The Hydrogen Earthshot is necessary to create a hydrogen economy, but it is not sufficient. An H 2 economy already exists, but it involves lots of greenhouse gas emissions. A clean H 2 economy does not exist today.

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CMU-led study finds that when Uber and Lyft enter cities, vehicle ownership increases

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The study found no statistically significant average effect of TNC entry on fuel economy or transit use but did find evidence of heterogeneity in these effects across urban areas, including larger transit ridership reductions after TNC entry in areas with higher income and more childless households. Ward et al. Ward et al. 2020.101933.

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ExxonMobil to proceed with $9B Payara development offshore Guyana

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The $9-billion development will target an estimated resource base of about 600 million oil-equivalent barrels. ExxonMobil is committed to building on the capabilities from our Liza Phase 1 and 2 offshore oil developments as we sanction the Payara field and responsibly develop Guyana’s natural resources. Earlier post.).

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San Pedro Bay Ports release draft of 2017 Clean Air Action Plan Update; $7-$14 billion price tag

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The ports of Los Angeles and Long Beach released the draft of their proposed 2017 C lean Air Action Plan (CAAP) Update. A preliminary analysis estimates the cost of implementing the 2017 CAAP at $7 billion to $14 billion. Energy Resource Planning. Reduce GHGs from port‐related sources to 80% below 1990 levels by 2050.

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CMU study highlights lower-cost design path to fuel economy compliance: acceleration trade-off

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A team at Carnegie Mellon University has found that engineering design modifications that compromise other performance attributes—specifically acceleration—offer a pathway to reduce the cost to automakers of compliance with fuel economy standards. Their paper is published in the ACS journal Environmental Science & Technology.

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Researchers find consumers compensate for fuel-efficient car by buying bigger second vehicle; losing 60% of fuel economy savings

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This unintended effect could erode goals of fuel economy standard policies by up to 60%. In such instances, if households have a preference for, say, horsepower or fuel economy, the attribute will be present in high or low levels across all goods in the portfolio. Just as Anderson et al. —Archsmith et al.