EV charging stations

In residential EV charging, the main challenge is to avoid exceeding the maximum allowed power. To address this, an energy meter installed in the main switchboard provides the total house consumption to adapt the charging process to the available power, preventing disconnections.
In some cases, a dedicated MID meter for the EV charger is required to claim state incentives or company car reimbursements, especially when V2G (Vehicle to Grid) capability is applied.

In commercial and public EV charging, the primary goal is to ensure that the end user pays exactly for the amount of energy charged into their battery. It is crucial to have the necessary certifications (which are not yet harmonized across different countries) that assign legal value to the metered kWh, whether delivered in AC or DC. Charger power ranges from 11 kW to 500+ kW, and the trend is moving towards the MW level with MCS (Megawatt Charging Systems). Load balancing is also essential: the available power must always be efficiently distributed among the chargers.