How Is EV Charging Designed for Postal Delivery Fleets?

The honest sizing method uses the fleet's actual routes: miles per route, energy consumption per mile for the vehicle type, and the hours each vehicle sits parked overnight. That energy divided by dwell time gives the required charging power per vehicle, and the fleet total — shaped by load management — sets the service size. I model the worst realistic night, including the days when routes run long and dwell shrinks, because the design must cover the bad night, not the average one. Battery degradation margin is included so year-eight vehicles still make their routes.

Load management is what makes depot charging affordable: the system sequences and throttles chargers so the site peak stays within the service capacity, prioritizing vehicles by dispatch time and route energy need. The layout places chargers for the shortest cable runs to the parking positions, with cable management — reels or overhead — that keeps connectors off the ground and out of the drive lanes. The phased plan roughs in conduit, switchgear space, and service capacity for the full fleet on day one, so each vehicle delivery phase only adds chargers, not trenching. Utility interconnection and any demand-charge structures are part of the design conversation from the start.

A postal depot charging installation works when every vehicle is ready at dispatch and the utility bill stays sane. The design proves both before construction. • Charging load calculated from actual route energy and overnight dwell hours • Load management sequencing chargers within the service capacity • Utility coordination with the managed peak documented early • Charger layout with durable cable management at each parking position • Phased infrastructure: conduit and switchgear space for the full fleet on day one