http://www.technologyreview.com/news/518066/could-electric-cars-threaten-the-grid/ http://www.technologyreview.com/news/518066/could-electric-c... > Researcher

http://www.technologyreview.com/news/518066/could-electric-cars-threaten-the-grid/ http://www.technologyreview.com/news/518066/could-electric-c... > Researchers ... have calculated that the grid has enough excess capacity to support over 150 million battery-powered cars, or about 75 percent of the cars, pickups, and SUVs on the road in the United States.