EV chargers integration
Smappee Genius Flex under smart control
The Smappee Genius Flex is the gateway that brings a site together: the charging stations, the measuring points of the installation and a battery behind it. Voltmasters EMS connects to its local MQTT interface and steers all three from one platform, within what the grid connection allows.
Smappee
Supported devices
- Genius Flex
- BESS
The Smappee Genius Flex gateway. You add one EV charger per charging station, one energy meter per measuring point (grid connection, PV, storage or a submetered circuit) and one battery for the storage installation behind it. The EMS controls the charging power and pauses the session; starting and stopping stays with the driver and the Smappee environment.
What the EMS gets out of your Smappee installation
- Load balancing within the limit of the grid connection
- Charge at the cheapest moments, including negative prices
- Priorities per charge point, the fleet comes first
- Interplay with battery and PV for extra charging power
- Monitoring of every charging session
Why installers combine Smappee and Voltmasters
One gateway, three roles. The EMS controls the charging power per connector, reads the grid connection and every submetered circuit as its own measuring point, and sends power setpoints to the battery behind the same gateway. That way peak shaving happens on the real grid meter, charging follows the available capacity and the battery trades on top of it. The Voltmaster Controller decides all of that locally, also without internet.
The technical bit, in short
- Connection over the local MQTT interface of the gateway, encrypted, on port 443
- Credentials from the MQTT app in the Smappee app; a battery behind the gateway has its own pair
- Wired network with a fixed IP address on the same subnet as the controller
- New measurements every 5 seconds, and a new charging setpoint every 5 seconds
- Switch off peak shaving on the gateway if the EMS is to steer the battery, otherwise two systems steer at once
How it works
How your Smappee connects to the EMS
Voltmaster Controller in the cabinet
The industrial DIN-rail controller sits next to the installation and runs the optimisation locally, even without internet.
Connect over the local network
You connect the device following the step-by-step guide in our documentation. We assist with commissioning on your first project.
Configure and go live
The installation appears in the platform: dashboards, control and monitoring are active right away.
Other ev chargers we control
All integrations →FAQ
Questions about the Smappee integration
Which Smappee devices does Voltmasters support?
The Genius Flex gateway, over its local MQTT interface: the charging stations behind it, the measuring points it meters (grid connection, PV, storage and submetered circuits) and a battery behind the same gateway.
Does the Smappee meter measure reactive power?
No. The interface reports active power, the currents and voltages per phase and the energy counters, but no reactive power and no power factor. Does the installation need those, then add a meter that does measure them at that measuring point, such as an Acrel ADL400 or a Schneider PM5000.
Does this work together with hardware from another brand?
Yes, the EMS is brand-independent. A battery, PV inverter, EV chargers and meters from different manufacturers are controlled together as one optimised system.
How do I connect a Smappee Genius Flex to the EMS?
The Voltmaster Controller connects to the device over the local network. The step-by-step instructions are in our documentation, and as a certified partner we guide your first commissioning from start to finish.
Ready to make your first project pay off?
Tell us about your next installation. We will show you the platform, help you build the business case and guide you from first quote to certification.