$25.15full charge
The Leaf S+ (75 kWh) costs about $25.15 to charge fully at Massachusetts's average home rate of 30.49¢/kWh, including ~10% charging loss (82.5 kWh from the wall). That is $8.30 per 100 miles.
EIA residential average, Massachusetts, 2026-07 (latest in this book). EIA weekly retail regular, Massachusetts, week of Oct 5, 2026.
At 1,000 miles a month and 30 mpg, home charging costs $83.02 and the gas car costs $143.40. The EV saves $60.38 a month at $4.302/gal. Both miles and mpg are editable on the calculator.
The listed DC fast-charge time to 80% is 35 minutes at up to 150 kW. A full home charge is a different session. This page prices the energy from the wall, not how long a Level 2 charger takes.
This page uses the residential rate. Public fast-charging prices are a separate scenario and are not included.