EV Fleet Conversion Calculator

Because Fleet Size multiplies straight through every other cost -- purchase price, fuel, and maintenance -- for both the EV and ICE fleet totals, so doubling your fleet size roughly doubles both total cost figures. It is the single input with the largest effect on the dollar amounts this calculator produces.

No -- the two fleets' purchase-price inputs are completely independent. ICE Cost per Vehicle only feeds into ICE Fleet Total Cost, and EV Cost per Vehicle only feeds into EV Fleet Total Cost; changing one never moves the other fleet's total, since they represent two entirely separate purchasing decisions being compared side by side.

Because EVs in this model have both lower fuel cost per mile ($0.14/kWh at 3.2 mi/kWh) and lower maintenance cost per mile than the ICE assumption ($3.50/gal at 22 mpg with higher per-mile maintenance), so the EV fleet's ongoing operating cost advantage compounds with every additional year in the Analysis Period, working against its typically higher upfront purchase price.

No -- this calculator uses fixed, typical assumptions (3.2 mi/kWh and $0.14/kWh for the EV fleet, 22 mpg and $3.50/gallon for the ICE fleet, plus fixed per-mile maintenance rates for each) rather than exposing them as adjustable inputs. Treat the resulting comparison as a general planning estimate, and recalculate manually if your local electricity rate, fuel price, or fleet's actual efficiency differ meaningfully from these assumptions.

It multiplies the difference between a fixed ICE emissions factor (0.89 lbs CO2 per mile, consistent with a 22 mpg gasoline vehicle) and a fixed EV grid-average factor (0.35 lbs CO2 per mile) by your fleet's total annual mileage and the Analysis Period. It reflects a typical national grid mix, not your specific utility's actual generation mix, which can be substantially cleaner or dirtier than the national average.