Fuel vs electricity cost comparison
Annual fuel savings are the difference between what you would have spent on gasoline (or other fuel) for the same mileage and what you spend on electricity for charging. Net annual savings = fuel savings − electricity cost. This calculator uses constant annual net savings and does not model fuel or electricity price escalation.
Example
Installation $1,500, no incentives, net investment $1,500. Former gasoline cost $1,800/year; electricity for charging $450/year; net savings $1,350/year. Lifespan 10 years. Total net gain = 1,350 × 10 = $13,500. ROI = (13,500 − 1,500) / 1,500 × 100 = 800%. Break-even = 1,500 / 1,350 ≈ 1.1 years.