Energy management & EMS integration FAQ

A charger does not live alone. A building has solar, a battery, a heat pump, hot water, HVAC, lighting. On top of that, a dynamic tariff and a fixed grid connection.

Charging well is a coordination problem, not a charger problem.

Why use an external energy management system?

An external EMS sees what the charger alone cannot. Solar production. Battery state. Heat pump cycles. Spot prices. Other building loads.

With that picture, decisions get coordinated. Slow the car so the heat pump finishes on solar. Push it hard when the price turns negative.

One system that knows everything beats five apps that each know one thing.

Do I have to use the Veton® app?

No. If the building already runs Niko Home Control, Qbus, Loxone, KNX or Home Assistant, the charger speaks to it over Modbus or OCPP. The driver stays in the interface they already use.

What if there is no EMS?

Most homes do not have one. Every Veton® charger ships with load management built in for up to 10 charge points. Static current limits. Group balancing. Mobile app control. Optional dynamic balancing with an external meter or a P1 reader.

Enough for most single-charger homes and small commercial sites. For larger sites, add the Veton® load management device.

Does Veton have its own energy management system?

Yes. The Veton® load management device coordinates 100+ charging points across multiple phases, manages the grid connection and the capacity-tariff peak, and learns the charging pattern of each driver.

It runs on-site. No cloud dependency.

How do I connect my own EMS to a Veton charger?

Every charger exposes a documented Modbus/TCP register map on port 502. Read voltage, current, power and session data. Write the target current. A watchdog falls back to a safe value if the EMS stops responding.

Is there a reference implementation?

Yes. The Veton® Home Assistant integration is open on GitHub. Same registers, with solar tracking, tariff modes and P1 meter support. Installers adapt it for Niko, Loxone, KNX or anything custom.

What about OCPP?

OCPP handles billing and the platform layer. Modbus/TCP handles the fast local energy decisions. Many sites run both in parallel. OCPP for billing, Modbus for real-time control. They do not interfere with each other.

Does Veton’s load management learn how my site charges?

On larger sites, the Veton® load management device learns the routine of each driver and each socket. It schedules sessions into the cheapest and sunniest hours while the car stays ready when the driver expects it.

Data stays on-site.

Last updated: 1 July 2026