$25.83full charge
The RZ 550e F SPORT (77 kWh) costs about $25.83 to charge fully at Massachusetts's average home rate of 30.49¢/kWh, including ~10% charging loss (84.7 kWh from the wall). That is $11.28 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 $112.77 and the gas car costs $143.40. The EV saves $30.63 a month at $4.302/gal. Both miles and mpg are editable on the calculator.
The listed DC fast-charge time to 80% is 30 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.