Formulas used to derive numbers

Cost to drive 100 km

PHEV : ({price/kWh} * {electric range} * {rate/kWh/100km} / 100 ) + ({price/L} * (100 - {electric range}) * {rate/L/100km} / 100 )

EV : {price/kWh} * {rate/kWh/100km}

Estimated annual savings

({gas cost} * ({current mileage} / 100) * {annual mileage}) - (({electricity consumption rate} * {electricity price}) * 200)

Some things to keep in mind

  • Your electricity rates varies by time of day
  • Winter driving can reduce EV range by approximately 40%