How do roaming prices work?

Roaming means that an end-customer with a charging pass like for example Chargemap or EDI chargepass is using a charger which is not directly managed by the chargepass manager.

We as wattify try to connect with as many eMSP (Mobile Service Providers) as possible, in that way that a maximum of people with a chargepass from a third party will be able to charge on our managed charging stations. A eMSP will charge their own end-customer based on their agreement with them. We as a CPO will charge the eMSP's at then end of the month, based on the price that you've requested in the wattify control panel. Their might be in most cases a markup charged to the end-user. The price which is visible by scanning the QR code on your charging station is the base price which is used to communicate to the eMSP's. It is therefore with current high volatility in the energymarket possible that some eMSP's will refuse some cards, although there is an agreement between eMSP and CPO. If you choose to use dynamic day prices based on the EPEX day ahead price it is perfectly possible that one day the same chargecard is working and the next day it doesn't because the dayprice passed a certain treshold which is not acceptable by the eMSP.

In that case the end customer always has the possibility to charge through the QR code and choose it's payment card to charge. Anyhow in more then 90% of the cases the end customer will then pay less.