EV WORLDwire: The End of the ICE Age, Rise of the Smart Grid: "With coal representing half of the nation's current electricity generation, the carbon density of a plug-in hybrid powered by the grid is about 55 percent that of conventional gasoline. Applied across the entire light-duty fleet, the shift to plug-in hybrid vehicles would cut more than one-quarter of the total transportation emissions—or close to 7 percent of the nation's total GHG emissions.
Further Greening of Electrons
Renewable Portfolio Standards (RPS) mandating minimum levels of renewable energy generation will further enhance GHG savings. Just over half of the states have developed renewable portfolio standards calling for up to 20 percent of electricity from renewable sources. California, always the leader, just raised its RPS, mandating 33 percent of electricity from renewable sources by 2020."
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