Charging Power Sharing

Last modified: Aug 02, 2026

Charging power sharing allocates limited electrical capacity among several connected EVs.

What charging power sharing means

Charging power sharing distributes a limited power budget among two or more vehicles charging at the same time. It is commonly used in multi-connector chargers, charging hubs, workplaces, apartment buildings, and fleet depots where the sum of all connector ratings exceeds the power that can be supplied simultaneously.

The controller may divide power equally, use priorities, follow departure targets, or reallocate unused capacity as vehicles finish or reduce their demand. The power available to one vehicle can therefore change during a session even when neither the charger nor the vehicle has a fault.

Power sharing and site load control

Power sharing usually describes allocation of an already defined EV-charging budget. Dynamic load balancing goes further by changing that budget in response to other electrical demand at the site. The functions can be combined: a site controller determines how much power is available to EV charging, then a charger or management system shares that amount among connected vehicles.

Connector power labels must be interpreted carefully at shared equipment. A station advertised with a high maximum may provide that output only when another connector is unused, and the precise policy depends on its design and configuration. IEC 63110 addresses management of EV charging and discharging infrastructure, including coordinated control functions. IEC 63110-1: Management of EV charging and discharging infrastructures

See Smart charging and grid integration for site-level coordination and the boundary between a fixed EV budget and dynamic site control.

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