Sometimes Level 1 is enough — Electric Vehicle Association.
Nearly all businesses that install electric vehicle (EV) chargers for their employees opt for Level 2. These chargers are typically 6.6kW, require a dedicated 240 or 208 volt line installed with a current rating of 40A, and have a total installation cost in the neighborhood of $2,000. This can be higher in cases where a long or difficult wiring job, or a new electrical panel, is required.