Charging with surplus energy from local PV generation is unbeatably cheap and increases the profitability of the PV system. 

The connection between the PV system and the charging station is a major technical challenge, as there are no established standards for communication.
We have taken the trouble to ensure compatibility with all relevant PV inverters out-of-the-box.
No additional hardware such as an external energy manager, cabling or meters are required! Set up the software and you're done.