When Level 1 can work
Drivers with short daily trips, long overnight dwell times or a plug-in hybrid may find Level 1 sufficient, provided the outlet and circuit are suitable.
Why homeowners choose Level 2
Level 2 restores substantially more range during the same parking period and makes it easier to recover from longer driving days.
Choose useful output
A lower-output Level 2 setup can still cover daily driving and may fit available capacity better. Compare kilometres needed each night rather than selecting by amperage alone.
Common questions
Level 1 vs Level 2 charging: common questions
How much range does Level 1 add overnight?
Roughly 6–8 km of range per hour on a standard 120-volt outlet, so about 70–95 km over a twelve-hour overnight charge. That covers short commutes and most plug-in hybrids, and falls behind quickly in cold weather or with longer driving days.
How much faster is Level 2?
A 32-amp Level 2 charger adds roughly 35–45 km per hour — about five to six times Level 1 — so a typical EV goes from low to full overnight.
Is Level 1 safe to use long-term?
Only on a properly rated, dedicated outlet in good condition. Continuous 12-amp draw for twelve hours a night finds weak receptacles and shared circuits, and extension cords are not acceptable. Have the outlet assessed before relying on it.
Does cold weather change the comparison?
Yes. In Ontario winters the car uses energy to heat the battery and cabin, and efficiency drops. Level 1 that just kept up in summer can fall behind in January, which is when many drivers move to Level 2.
Do I need Level 2 for a plug-in hybrid?
Often not. PHEV batteries are small enough to refill overnight on Level 1. Level 2 still helps if you top up between trips or want the flexibility for a future full EV.
What does upgrading to Level 2 involve?
A dedicated 240-volt circuit from the panel to the charger, a load calculation to confirm capacity, the charger mounting and configuration, and ESA notification. Most homes are $1,200–$2,500 installed.