24 Feb '16, 5pm

Study: Overnight Charging in Coal-Intensive Grids May Be Worse For The Environment

Off-peak overnight plug-in car charging has long been promoted, but could it actually be worse for the environment? According to a new study published in the journal Environmental Research Letters by researchers at Carnegie Mellon University, this is the case for electrified vehicle owners living in coal-intensive regions. That finding came after CMU’s researchers modeled the “PJM” grid supplying Washington, Philadelphia, Pittsburgh, Cincinnati and Chicago. Overnight is when most people are sleeping so grid demands are typically much lower, and at that time utilities may switch their power from cleaner sources at their disposal to coal, which can be problematic. “We looked at how power plant operations would change in response to electric vehicle charging load, and we modeled emissions from those plants and their downwind air pollution consequences for human health and the...

Full article: http://www.hybridcars.com/study-overnight-charging-in-coa...

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