The US DOE just issued data for 2017. We used 2 billion kilowatt hours of electricity to power plug in vehicles in the USA for the year. This means that approximately 6 billion miles were driven on electric power. Average miles driven on each vehicle probably equalled 12,000 miles for the year and therefore half a million gasoline vehicles were replaced by the electric vehicles, This is a pretty successful but not quite as successful as Obama promised. Obama promised a million vehicles by 2015.
From a CO2 perspective many of the plug ins are in California which has a green grid. Let's assume each kilowatt hour of plug in power had 0.75 pounds of CO2. The CO2 emissions from the 2 billion kwh is therefore 1.5 billion pounds. Driving 6 billion miles on gasoline at 21 MPG would emit 6 billion pounds of CO2, The EV revolution saved 4.5 billion pounds of CO2 emissions.
sounds great till you calculate the cost. Over $4 billion was given in subsidies and let's assume the EV have a 10 year lifespan on the road. This means each pound of CO2 saved over the life of the vehicle has a subsidy cost of 10 cents. This equals $200 a ton of CO2. An amount equal to ten times the value of the CO2 saved.
But at least the EVs did do a lot more than cellulosic ethanol. Elon Musk is a lot smarter than Vinod Khosla. Musk gets a C, Khosla scored a F minus.
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