To integrate your existing PV system into the reev EMS, Dynamic Load Management (DLM) must first be activated. This ensures that the EMS can account for various on-site energy sources when distributing charging loads to your EV infrastructure.
For this, certain hardware components must be installed on-site. Depending on your location’s setup, existing metering hardware may be reused—provided it meets the requirements outlined in our dynamic load management installation manual and includes compatible metering devices as listed in our HW compatibility table.
Please note: While the reev EMS supports various types of energy meters, a
Teltonika router is always required. It acts as an IoT gateway by reading the Modbus registers from the meter and securely transmitting the data to the reev EMS backend.
Physical Setup Requirements
In addition to the standard installation steps described in the DLM manual, PV integration requires an additional, specific metering configuration:
The energy meter must be positioned upstream of both the building consumption and the PV system. This ensures that the meter can continuously measure both building demand and PV production.
See the diagram below for reference:
By capturing both the power fed into the building from the PV system and the total site consumption at the grid connection point, the reev EMS can dynamically adjust EV charging based on the available PV surplus without directly connecting to the PV inverter.
For further insight into how the EMS leverages this data and which functionalities it enables as a result, refer to our PV-integration functionality guide.
Important notes
Direct communication or physical connection with the PV inverter is not required nor supported.
No direct PV measurement or control: The reev EMS does not track PV generation separately. Instead, it calculates PV surplus indirectly based on energy meter measurements.