Charging hub
A charging hub is a site with multiple charging points, from AC wallboxes to DC dispensers. The core issue is power when many vehicles charge at once.
What does charging hub mean?
A charging hub is a site with multiple charging points — from a depot with eight AC wallboxes to a fast-charging site with DC dispensers in the megawatt range. Its core problem is almost always power: many vehicles charge simultaneously, and the grid cannot supply the sum.
Storage and charging management together form the solution: the storage system buffers power peaks from the battery, while charging management distributes the available power intelligently across the vehicles.
What matters in practice
- set simultaneity realistically: all points rarely charge at rated power
- analyse charging behaviour: dwell times often allow throttled charging
- choose a high storage C-rate — charging hubs need power more than capacity
- HPC sites (150 kW+ per dispenser) are a design class of their own
Practical example
A haulage yard charges 14 electric trucks overnight. Instead of an 800 kW grid upgrade, a container storage system buffers the first charging wave and the management staggers the rest through the night — the existing 400 kW connection remained sufficient.
The Speichercampus perspective
Charging hubs are a focus of the Speichercampus project review: charging behaviour, grid connection and storage power are calculated as one system, not three trades.