How to charge an EV at home
The speed and cost of at-home EV charging varies widely, depending on what car you drive, where you live and what equipment you use. For example, the cost of adding about 100 miles to an EV when you charge at home can be anywhere from $2 to $22. (Adding the same number of miles at a public port can cost from $6 to $35.) Here’s what to know about your at-home charging options.
Level 1 charger. Level 1 chargers plug directly in to a standard 120-volt wall outlet using a connector that comes with most EVs. This option can be cost effective, depending on your electricity rates, but it’s the slowest way to charge an EV — you’ll get up to five miles of range per hour of charging.
Level 2 charger. This will give you a faster charge than a Level 1 charger — up to 250 miles of range per hour of charging — but it's more expensive than the former. Level 2 chargers don’t come with the vehicle, which means you’ll have to purchase these chargers separately. They typically cost from $400-$1,000, depending on your vehicle. You’ll also need a midlevel voltage (240-volt) wall outlet, which is typically reserved for large appliances like dryers and ovens. Such voltage is not common in most home garages, which means additional electrical work may be required. Level 2 wiring and installation can cost up to a few thousand dollars.
Tesla charging. Unlike most manufacturers that use a standard EV charging connector, Tesla uses a unique connector known as an NCAS, and sells its own at-home charging hardware, which is comparable to a Level 2 charger — both the connector and hardware have to be purchased separately.
EV battery size. Your vehicle’s battery size is measured in kilowatt-hours or kWh. EV battery capacities range from 20 kWh to more than 100 kWh. Larger batteries have a higher capacity, and the larger your vehicle’s battery capacity, the longer it will take to get to a full charge. For example, a 100 kWh battery will take longer to completely charge than a 20 kWh battery.