Formula
Available port-hours = ports × days × available hours per day. Occupied port-hours = sessions × average occupied time. Utilization = occupied port-hours ÷ available port-hours × 100%.
What the result means
Utilization measures how much of the available charging-port time is occupied. Pair it with sessions per port and energy per session to distinguish frequent short use from fewer long sessions.
Define occupied time consistently. If a connected vehicle blocks the port after charging ends, include that time when the goal is to assess operational availability.