Electric motors convert from 50 to 95% of their input energy to output power, generating mechanical rotation much more efficiently than gasoline engines.
Overall efficiency, of course, varies among electric motors, depending on the size and special characteristics of each motor. Motors under one horsepower typically fall within a 50 to 75% efficiency range, whereas larger gasoline engines normally convert only about 25% of the chemical energy they consume into useful mechanical work. Diesel engines, on the average, are around 40% efficient, while most natural gas engines approximate 37% efficiency.
And Furthermore . . .
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