Installing signs and painting EV charging areas are common practices for both functional and promotional purposes.
At many sites, there are relatively few EV chargers compared to the total number of parking spaces. At sites like this, consider installing wayfinding signs throughout the parking lot that direct EV drivers toward your EV chargers.
Painting parking spaces and walls bright green can also help EV drivers more quickly locate your EV chargers. In the same way that blue has become a universal indication of accessible parking, green has become a universal sign of an EV charging spot.
Parking spaces in front of EV chargers are almost always restricted for electric vehicles that are actively charging. We recommend that you install signs that communicate these restrictions. In some jurisdictions, to enforce this policy, you must install signs that communicate this restriction and any penalties for drivers who violate the policy
While signage and paint are best practices for workplace, public, and semi-public EV charging deployments, there are cases where you may want to avoid signage/paint. Dedicated parking spaces with EV chargers in multi-family buildings do not need to be painted. This may attract unwanted attention from other EV drivers who do not have permission to use that EV charger. Likewise, many fleet depots can do without decorating their EV charging spaces.
You can find examples of both wayfinding and parking space signage for EV chargers here, or by consulting your local parking guidelines authority.