In the attached article, some researchers at the Swiss Federal Institute of Technology are proposing on-site energy storage for charging EVs. They see two advantages: 1) reduced demands on the grid for rapid charging, and 2) potentially faster charging as the EV could draw more energy faster from a storage device than the grid can deliver.
I really don't see EVs straining the grid, as most are charged at home and off-peak. Such charging habits already balance the load but I'm not a Swiss researcher...
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