Couple factors that determine how long it will take to charge your electric vehicle and how many kilometers of range you can add per hour of charging:

Level 1

One Hour of Charge approximately 10 km of driving range.
This is a normal 120-volt connection, which uses any standard household outlet; there are no extra costs here. The downside is that charging times can be painfully slow.

Level 2

One Hour of Charge approximately 30 km of driving range.
This uses a higher-output 240-volt power source, much like one that you'd plug your oven or AC unit into. Charging times are much faster than Level 1. Excluding installation costs, fitting a Level 2 outlet in your home garage typically runs from as low as $500, to approximately $1000+, depending on the make and model of the charger.

Level 3

One Hour of Charge approximately 200 km of driving range. These fast-charging devices use very high voltage and can add 100 kilometers of range to an EV in just half an hour in some cases. These chargers, however, are extremely expensive, costing tens of thousands of dollars, and routinely using a Level 3 charger can ultimately hurt your car's battery, so we wouldn't consider one for home installation. Besides, they are cost prohibitive for most consumers.