Is charging at home cheaper than using a public charging station?

Almost always yes. Home charging at NJ residential rates (roughly 16 to 18 cents per kWh) is significantly cheaper than most public Level 2 or DC fast chargers, which commonly charge 30 to 50 cents per kWh. Fast charging on a network like Electrify America or ChargePoint can cost two to three times more per mile than home charging. Home charging overnight is the lowest-cost way to fuel an EV and should be the default for anyone with that option.