Charging infrastructure
AC, DC or combined charging infrastructure, selected based on the fleet's operational needs and the available grid capacity.
Systems
The fleet must be ready on time. Charging happens overnight.
Overnight fleet charging is a critical process for daily operational readiness. Available grid capacity is limited, the charging window is fixed, and every vehicle must be ready for service at a specific hour.
Qerra designs depot systems as managed energy infrastructure that guarantees fleet readiness at a precise time and within the available grid capacity.
Contact an expertThe real challenges of a depot
A depot is an operational context with specific constraints:
- Available grid capacity is fixed and cannot be increased instantly.
- All charging happens in a limited overnight window.
- Every vehicle must be ready for service at a specific time.
- Vehicles have different energy needs, schedules and routes.
Qerra OS manages these processes automatically so the fleet is ready on time, without manual intervention and without risk of overload.
How the system works
We apply four core principles:
01
Planning by departure schedule
The system knows when each vehicle must be ready and what state of charge is required. Charging is planned according to these priorities.
02
Power distribution
Available grid capacity is allocated automatically across all vehicles based on their schedules and energy needs.
03
Priority by departure time
Vehicles that need to leave first are given priority. Those with later departure times charge more slowly.
04
Guaranteed readiness without excess charging
The goal is not to charge every vehicle to the maximum. The goal is for each one to have the required charge at the exact moment it is needed.
Grid capacity is the main challenge
Most depots do not have a grid connection designed to charge dozens of vehicles simultaneously at full power. This is not an exception — it is the reality for many organisations moving to electric fleets.
Example: a depot with 800 kW of available grid capacity and 40 vehicles. If all of them charged simultaneously at maximum power, the demand would reach approximately 2,400 kW. Instead of a costly and slow grid upgrade, Qerra OS manages the available 800 kW and allocates it according to departure schedules and the energy needs of each vehicle. The result is a fleet that is ready at the start of the working day — with no grid overload and no expensive investment.
Increasing grid capacity often requires time and significant investment. In many cases, the right energy management lets the depot operate efficiently today, with the existing infrastructure.
What the system includes
Energy storage
Buffer storage when available capacity is not enough to cover peak load.
Qerra OS
Qerra OS manages charging, plans sessions according to departure schedules and distributes energy automatically across all vehicles.
Electrical infrastructure
Distribution, protection and cabling designed for the entire system.
Qerra Care
Continuous monitoring, preventive maintenance and guaranteed response times.
The sites we work with
- Logistics bases with overnight charging of delivery and service vehicles
- Bus and transport depots with fixed departure schedules
- Corporate fleets where every vehicle must be ready at a specific time
Ongoing reliability
Deployment is only the first step. Through Qerra Care we provide continuous monitoring, preventive maintenance and a guaranteed response time.
Learn more about Qerra CareA depot is one of the most demanding environments for energy management — limited grid capacity, fixed deadlines and high expectations of operational readiness.
Success does not depend on the number of chargers. It depends on whether the right amount of energy reaches the right vehicle at the right moment.