Almost always, yes. Home charging on a standard tariff in 2026 typically costs 0.10 to 0.40 per kWh depending on your country and supplier. Public AC charging is 0.30 to 0.50 per kWh, and DC fast charging is 0.50 to 0.80 per kWh, sometimes higher on motorways. Leaving home with a full battery saves real money over the course of a long trip, even if it adds 6 to 8 hours of overnight charging time you weren't planning for.