Figure 4. Relative energy cost for power sources most commonly used in North Carolina . All values are based on the recommended Nebraska Performance Standard for the power units shown. Energy costs are based on the following rates: electricity, 7 cents per kilowatt hour; diesel fuel, $1 per gallon; gasoline, $1.10 per gallon. For gasoline engines, the fuel c
Bar graph shows relative energy cost for Electric motor, diesel engine and gasoline engine