How a Truck Fleet Runs Schedule-Based Depot Charging

Discover how a heavy-duty truck fleet automated depot charging with VDV-driven schedules, smart load distribution, and reliable departures across European hubs.

Company:

A leading European logistics operator

Background

A European logistics operator runs an electric heavy-duty truck fleet across several distribution hubs. Each delayed departure cascades into missed delivery windows and contractual penalties.

Challenge

The OCPP-only backend handled every plug-in event identically, ignoring departure schedules. Drivers regularly found trucks unprepared, energy costs ran high during peak windows, and coordination depended on phone calls and spreadsheets.

Solution

Tridens EV Charge replaced the legacy backend with a CMS purpose-built for heavy-duty fleets. VDV 463 connected depot planning to charging operations. Dynamic load management with priority groups optimized time-of-use consumption. Reservation enforcement protected scheduled sessions at the connector.

Benefits

Trucks now depart on schedule with consistent state of charge. Energy costs declined through automated off-peak charging. Demand charges fell as power consumption remained within the grid contract. New depots are onboarded as configuration rather than custom integration.

Schedule-Aligned Charging

Logistics operations depend on schedule adherence. A truck that departs 30 minutes late can miss a delivery slot, trigger penalties, and disrupt downstream warehouse operations. The previous charging setup had no awareness of departure timing. Trucks were charged in the order they were plugged in, not the order they were required to leave.

The new CMS integrates with the operator’s depot planning system through VDV 463. Each vehicle’s planned departure, target state of charge, and priority level flows into the platform automatically. Every entry becomes a charging session with a defined start time, end time, and energy target. Trucks departing at 04:00 receive priority over those scheduled for 09:00, and the system rebalances continuously as schedules change.

Smart Load Distribution

Each depot operates within a fixed grid connection capacity. For heavy-duty fleets running 350 kW or higher chargers, exceeding that capacity triggers significant demand charges and risks site-wide outages. The operator required power distribution that respected the grid contract while maintaining every truck’s departure window.

Tridens EV Charge distributes available power dynamically across active sessions. Priority groups defined by the operating timetable receive capacity first. Time blocks shift non-urgent charging into off-peak windows, where electricity costs are substantially lower. Real-time meter values feed back into the system continuously, keeping the depot within its contracted limits. When one truck completes its session, the released capacity flows automatically to the next vehicle in queue.

Reservation Enforcement

In a busy depot, an unscheduled vehicle plugging into a reserved charger disrupts the entire operating plan. The previous setup had no mechanism for enforcing reservations at the connector. Sessions ran on a first-come, first-served basis, even when specific vehicles had been allocated to bays for planned departure windows.

Reservations now live at the charger. When a truck arrives, the system validates the vehicle against the schedule, confirms the planned session, and initiates charging only if the slot is reserved for that vehicle. If a different truck attempts to plug in, the session is held until the system reassigns it to an available bay. Depot operations now run on enforceable rules rather than driver discretion.