As with electricity and gas, the prices for the recharging service are not regulated. The ILR does not currently have any legal powers to monitor the prices of electric car charging. Indeed, it should be understood that the recharging service does not constitute a supply of electricity within the meaning of the law, so the powers of the ILR do not currently apply to it.
In terms of tariffs, a distinction should be made between ad hoc tariffs, which are paid directly at the charging station, usually by credit card to the charging station operator, and service provider tariffs. For the latter, a subscription is usually required (sometimes free of charge) and the charge is initiated by a RFID (Radio Frequency IDentification) badge or via application from the charging service provider.
Each charging station operator and charging service provider is free to set the prices for their service. The prices issued by the same charging service provider may vary depending on the prices charged to them by the charging station operator, the charging capacity, the duration of occupation, or more generally, its commercial strategy. For example, some charging service providers charge the tariff of the charging station operator (with or without a flat rate), others have their own tariffs. In particular, the latter may be more advantageous than “ad hoc” payment, i.e. payment by credit card at the charging station, at some charging stations, but more expensive at others.
It is therefore useful to check with your charging service provider to find out what prices are charged. This can usually be done via an application provided by the charging service provider.
Beware, however: free charging stations sometimes require an RFID card to be activated. As soon as a card of this kind is used, the conditions and tariffs of the charging service provider who supplied the card apply and no longer those of the charging station operator.
You should also be wary of time-based charges that apply as long as the car is connected, even if the charge is complete.
The Chargy and Superchargy charging network is currently the most widespread in Luxembourg. These charging stations are accessible via a number of charging service providers, a list of which can be found here.