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Estimate home vs public EV charging costs, charging duration, and trip expenses per mile or km
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How EV Charging Costs Are Calculated: Charging expense depends on total battery energy transferred (kWh), charger efficiency loss (typically ~10% heat loss during AC charging), and local utility tariffs.
Home vs. Public Fast Charging: Home Level 2 charging is significantly cheaper per kWh than commercial DC Fast Charging stations, which often include peak demand charges and fixed session fees.
How much does it cost to charge an EV at home?
At the US average residential electricity rate of $0.16 per kWh, fully charging a 75 kWh battery costs about $12.00, providing ~250–300 miles of driving range.
Why is public fast charging more expensive than home charging?
Public Level 3 DC Fast Chargers incur commercial demand charges, equipment installation overhead, and subscription/session fees, making per-kWh costs 2x to 4x higher than residential rates.
How do I convert EV efficiency from kWh/mi to MPGe?
1 gallon of gasoline contains approximately 33.7 kWh of energy. Divide 33.7 by your vehicle's kWh/mi rate to get equivalent MPGe.