Charging an EV at home from 20% to 80% typically uses about 30 kWh on a sedan or 50 kWh on a truck. At average US rates that's $4–$8 per charge.
US average: $0.16/kWh. CA & HI: $0.30+. Look at any electric bill for your exact rate.
Many bills are wrong about the rate they apply. A free bill check confirms what you're really paying per kWh.