Grumpycat
Elite Member
Where did those numbers come from? If you check the link below, Schneider Electric claims power plant efficiency is around 35 percent, PLUS line losses to get it from the plant are between 8 and 15 percent. I maintain it's more efficient to burn the fuel in the equipment and skip all the wasteful steps.
How big are Power line losses? - Schneider Electric Blog
Sorry its not preprocessed, chewed, and digested for you. You have to do some searching and math. It will be good for you.
Start at EPA.gov. Look up pollution of coal-fired electric production. There you will find data on emissions per kWh of power generated. They also have sections on thermal efficiency of power generation.
At fueleconomy.gov the EPA lists emissions and energy consumption for vehicles. You will find Tesla Model 3 Long Range consumes 26 kWh per 100 miles.
Then go find diesel and gasoline vehicles to compare against. From the above you know how much emissions per kWh come from coal electricity. With a 9th grade education you should be able to convert that into grams per mile for the Tesla to directly look up against any other vehicle at fueleconomy.gov.
A gallon of gasoline contains 33.7 kWh of heat. The Tesla goes 100 miles on 26 kWh,
100 miles * 33.7 kWh / 26 kWh= 130 MPGe.
Now lets say the Tesla is 100% efficient (it is not). Then an automobile of the same mass getting 30 MPG is 30/130 = 23% efficient as a Tesla.
If a Tesla is 80% efficient then 30 / (130 * 0.80) = 29%