Single-Phase vs Three-Phase EV Charging: Which Do You Need?

One of the most common questions when choosing a home or business EV charger is: single-phase or three-phase? The answer depends on your vehicle, your electrical supply, and your charging speed needs. Here's a clear breakdown.

Single-Phase Charging

Single-phase charging uses a standard 230V supply and delivers up to 7.4kW of power. It's the most common setup in Israeli homes. A typical EV with a 60kWh battery will charge fully overnight (8–9 hours) on single-phase — perfectly adequate for most daily driving cycles.

Single-phase is simpler and cheaper to install, and is the right choice when your car's onboard charger is limited to 7.4kW (as many are), or when your building's electrical supply doesn't support three-phase.

Three-Phase Charging

Three-phase charging uses a 400V three-phase supply and can deliver up to 22kW. This cuts charging time dramatically — a 60kWh battery can be charged in approximately 3 hours. However, your vehicle must support three-phase AC charging (not all do — check your car's onboard charger specs).

Three-phase is ideal for commercial locations, shared parking facilities, and drivers who need frequent fast top-ups. It requires a three-phase electrical supply at the installation site, which is standard in commercial buildings but less common in older homes.

Which Is Right for You?

For home users charging overnight: single-phase is almost always sufficient. For businesses, fleets, or anyone needing maximum charging speed: three-phase delivers the throughput. Greems supports both configurations and optimizes load management across mixed installations automatically.

Not sure which phase is right for your site? The Greems team can assess your needs and recommend the optimal solution.